Registration Examination for Dietitians (RDN/RD) — Questions and Answers

Question 1: Which statement about the NDTR credential is accurate?

NDTRs are credentialed by CDR and may work under the supervision of an RDN (Correct answer)
NDTRs are exempt from continuing education requirements
NDTRs may supervise RDNs in clinical practice settings
NDTRs must hold a bachelor's degree in dietetics to sit for the exam

Correct answer: NDTRs are credentialed by CDR and may work under the supervision of an RDN

NDTRs are credentialed by the Commission on Dietetic Registration and typically work under the supervision of an RDN in various practice settings.

Question 2: Which purchasing method involves buying a large quantity of an item at one time to take advantage of a lower unit price?

Volume purchasing (Correct answer)
Just-in-time purchasing
Blanket purchase order
Competitive bidding

Correct answer: Volume purchasing

Volume purchasing (bulk buying) leverages economies of scale by purchasing large quantities at once, resulting in a lower cost per unit.

Question 3: Cross-contamination in a food preparation setting is BEST prevented by:

Washing all produce with soap before use
Using separate cutting boards for raw meats and ready-to-eat foods (Correct answer)
Storing cooked foods on shelves below raw meats
Using the same knife for all foods after visual inspection

Correct answer: Using separate cutting boards for raw meats and ready-to-eat foods

Dedicated cutting boards for raw meats and ready-to-eat foods is the primary physical barrier against cross-contamination.

Question 4: Cyclospora cayetanensis is a parasitic protozoan that has been linked to multiple foodborne illness outbreaks in the US. What food vehicle is most commonly implicated?

Unpasteurized apple cider
Raw oysters and clams
Fresh imported produce such as raspberries, basil, and cilantro (Correct answer)
Undercooked pork

Correct answer: Fresh imported produce such as raspberries, basil, and cilantro

Cyclospora outbreaks in the US have most frequently been linked to fresh imported produce, particularly raspberries from Guatemala, basil, and cilantro.

Question 5: Which enzyme is responsible for the rate-limiting step in fatty acid synthesis?

Citrate lyase
Malonyl-CoA decarboxylase
Fatty acid synthase
Acetyl-CoA carboxylase (Correct answer)

Correct answer: Acetyl-CoA carboxylase

Acetyl-CoA carboxylase catalyzes the conversion of acetyl-CoA to malonyl-CoA, which is the committed, rate-limiting step in de novo fatty acid synthesis.

Question 6: When conducting a nutritional assessment, which biochemical marker reflects long-term vitamin A status MOST accurately?

Urinary retinol excretion
Serum beta-carotene
Serum retinol
Relative dose response (RDR) test (Correct answer)

Correct answer: Relative dose response (RDR) test

The relative dose response (RDR) test measures the liver's response to a dose of vitamin A, reflecting hepatic reserves and long-term status more accurately than serum retinol alone.

Question 7: Which specialty credential, offered by CDR, is designed for RDNs practicing in oncology nutrition?

CNS — Certified Nutrition Specialist
CSSD — Certified Specialist in Sports Dietetics
CPON — Certified Pediatric Oncology Nurse
CSO — Certified Specialist in Oncology (Correct answer)

Correct answer: CSO — Certified Specialist in Oncology

The CSO (Certified Specialist in Oncology) is a CDR board certification for RDNs with advanced practice in oncology nutrition.

Question 8: Which of the following is a primary limitation of using only one 24-hour dietary recall to assess an individual's usual intake?

It does not capture macronutrient data
Day-to-day variability makes a single day unrepresentative of habitual intake (Correct answer)
Respondents cannot remember yesterday's food
It is too expensive to administer

Correct answer: Day-to-day variability makes a single day unrepresentative of habitual intake

A single 24-hour recall reflects only one day's intake and may not represent a person's typical diet due to intra-individual variability.

Question 9: Which strategy is most effective for improving breastfeeding rates at the community level?

Multi-level interventions combining peer support, workplace policies, and healthcare provider training (Correct answer)
Formula marketing restrictions at one hospital
Individual lactation consultations only
Providing breastfeeding pamphlets at WIC offices

Correct answer: Multi-level interventions combining peer support, workplace policies, and healthcare provider training

Evidence shows that multi-level interventions addressing individual, social, and policy factors simultaneously are most effective at increasing breastfeeding initiation and duration.

Question 10: What is the correct order for donning PPE?

Any order is acceptable
Gown, mask, eye protection, gloves (Correct answer)
Mask, gloves, gown, eye protection
Gloves, gown, mask, eye protection

Correct answer: Gown, mask, eye protection, gloves

The correct donning sequence is gown first, then mask/respirator, eye protection/face shield, and gloves last. This prevents contamination during application.

Question 11: A foodservice director wants to improve employee retention. Which management approach is MOST supported by motivation theory?

Offering only monetary bonuses as incentives
Providing recognition, growth opportunities, and meaningful work (Correct answer)
Increasing surveillance and disciplinary procedures
Standardizing all job tasks to reduce decision fatigue

Correct answer: Providing recognition, growth opportunities, and meaningful work

Herzberg's motivation-hygiene theory identifies recognition, achievement, and growth (motivators) as the primary drivers of long-term job satisfaction and retention.

Question 12: Which preservation method works primarily by reducing water activity through the addition of solutes such as sugar or salt?

Irradiation
Modified atmosphere packaging
Ultra-high temperature processing
Osmotic preservation (Correct answer)

Correct answer: Osmotic preservation

Osmotic preservation uses high concentrations of solutes (sugar in jams, salt in cured meats) to reduce available water activity, inhibiting microbial growth.

Question 13: When calculating a menu item's food cost percentage, which formula is correct?

Food cost ÷ selling price × 100 (Correct answer)
Food cost × selling price × 100
Selling price ÷ food cost × 100
Selling price − food cost × 100

Correct answer: Food cost ÷ selling price × 100

Food cost percentage = (food cost ÷ selling price) × 100, indicating what proportion of the menu price is spent on ingredients.

Question 14: Which feeding pattern is associated with the greatest risk of dental caries in toddlers?

Allowing a bottle of juice or milk at bedtime (Correct answer)
Offering a sippy cup of water between meals
Breastfeeding on demand after 12 months
Introducing solid foods before 4 months

Correct answer: Allowing a bottle of juice or milk at bedtime

Prolonged exposure to fermentable carbohydrates from a bedtime bottle of juice or milk causes early childhood caries (baby bottle tooth decay).

Question 15: A 16-year-old male reports consuming a vegan diet. Which nutrient combination requires the MOST careful monitoring due to plant-based diet restrictions?

Vitamin C and folate
Vitamin E, selenium, and copper
Vitamin B12, iron, zinc, and omega-3 fatty acids (Correct answer)
Vitamin A, potassium, and magnesium

Correct answer: Vitamin B12, iron, zinc, and omega-3 fatty acids

Vegan adolescents are at high risk for deficiencies in B12 (found only in animal products), iron (non-heme, lower bioavailability), zinc, and long-chain omega-3s (EPA/DHA).

Question 16: A patient with chronic kidney disease (CKD) stage 4 who is not on dialysis should have their dietary protein intake restricted to approximately:

0.8 g/kg/day
1.2 g/kg/day
0.6–0.8 g/kg/day (Correct answer)
1.5 g/kg/day

Correct answer: 0.6–0.8 g/kg/day

For non-dialysis CKD patients, protein restriction of 0.6–0.8 g/kg/day helps slow progression and reduce uremic symptoms.

Question 17: The 'flat slope syndrome' in dietary assessment describes a situation where:

Portion sizes are systematically overestimated
All respondents report similar intakes regardless of true variation
Energy intake remains constant across different activity levels
High consumers under-report and low consumers over-report (Correct answer)

Correct answer: High consumers under-report and low consumers over-report

Flat slope syndrome describes regression to the mean in dietary reporting, where high consumers under-report and low consumers over-report, compressing the true distribution.

Question 18: What is preventive maintenance?

Fixing equipment after it breaks
Cleaning only
Replacing all equipment annually
Regular scheduled maintenance to prevent equipment failure (Correct answer)

Correct answer: Regular scheduled maintenance to prevent equipment failure

Preventive maintenance involves regular, scheduled inspections and servicing to prevent unexpected breakdowns and extend equipment life.

Question 19: Which of the following is an example of food service management within the RDN scope of practice?

Assessing a patient's dietary intake for a nutrition plan
Conducting clinical trials for new dietary supplements
Developing menus that meet nutritional and budgetary requirements for institutions (Correct answer)
Designing a community nutrition education program

Correct answer: Developing menus that meet nutritional and budgetary requirements for institutions

Food service management within the RDN scope of practice involves overseeing the nutritional quality, safety, and efficiency of food service operations in various institutions. This includes tasks like developing menus that adhere to specific nutritional guidelines, managing budgets, and ensuring food safety standards are met. RDNs in this role often work in hospitals, schools, or corporate dining facilities.

Question 20: What does informed consent require?

Getting any signature on a form
Verbal agreement only
Family approval only
Explaining the procedure, risks, benefits, and alternatives to the patient (Correct answer)

Correct answer: Explaining the procedure, risks, benefits, and alternatives to the patient

Informed consent requires that patients understand the proposed procedure, its risks and benefits, alternatives, and have the opportunity to ask questions before agreeing.

Question 21: An RDN is asked to provide nutrition counseling for a patient whose cultural background includes dietary practices unfamiliar to the dietitian. What is the BEST first step?

Refer the patient to a dietitian of the same cultural background
Research the patient's cultural food practices before the counseling session (Correct answer)
Ask the patient to adapt their diet to more familiar foods
Recommend the patient follow standard American dietary guidelines

Correct answer: Research the patient's cultural food practices before the counseling session

Culturally competent care requires the RDN to learn about the patient's cultural food practices before providing tailored counseling.

Question 22: In epidemiology, which measure describes the proportion of new cases of a condition in a population over a specific time period?

Attributable risk
Incidence rate (Correct answer)
Odds ratio
Prevalence

Correct answer: Incidence rate

Incidence rate measures new cases arising in a population at risk during a defined time period, distinguishing it from prevalence which captures existing cases.

Question 23: A foodservice manager is planning a new employee orientation. Which topic should be covered FIRST according to best practices?

Payroll and benefit enrollment
Menu development and recipe standardization
Food safety and personal hygiene standards (Correct answer)
Performance appraisal criteria

Correct answer: Food safety and personal hygiene standards

Food safety and personal hygiene are the highest priority during orientation because they directly protect public health and regulatory compliance from day one.

Question 24: A food service manager notices that the steam table temperature has dropped to 130°F. What is the correct action?

Discard all food held below 135°F for more than 2 hours (Correct answer)
Serve the food immediately since 130°F is acceptable
Add more hot water to bring temp up within 30 minutes
Cover the food to retain heat and continue service

Correct answer: Discard all food held below 135°F for more than 2 hours

Foods held in the temperature danger zone (41–135°F) for more than 2 hours must be discarded to prevent foodborne illness.

Question 25: What role does ethics play in Food Service Management practice?

It guides professional conduct and protects stakeholders (Correct answer)
Ethics is optional in professional settings
It only applies to managers
It only matters for legal compliance

Correct answer: It guides professional conduct and protects stakeholders

Professional ethics provide frameworks for responsible decision-making, ensuring practitioners act in the best interest of those they serve.

Question 26: What does a 'scope of practice' framework for RDNs primarily define?

The number of patients an RDN may see per day
The geographic regions where an RDN may practice
The minimum salary an RDN must earn in clinical settings
The range of activities an RDN is qualified and authorized to perform (Correct answer)

Correct answer: The range of activities an RDN is qualified and authorized to perform

Scope of practice defines the breadth of services, procedures, and activities that a credentialed professional is qualified and authorized to provide.

Question 27: Which study approach is most effective for Nutritional Biochemistry material?

Passive re-reading of notes
Active recall with practice questions (Correct answer)
Highlighting all text
Studying for very long sessions without breaks

Correct answer: Active recall with practice questions

Active recall through practice questions is the most effective study method, as it strengthens memory retrieval pathways.

Question 28: A food service manager needs to purchase a new commercial dishwasher. This expenditure would be recorded in which type of budget?

Capital budget (Correct answer)
Labor budget
Cash flow budget
Operating budget

Correct answer: Capital budget

Large equipment purchases like a commercial dishwasher are capital expenditures, tracked in the capital budget rather than the operating budget.

Question 29: An adolescent female athlete reports fatigue and irregular menstrual cycles with a restrictive diet. Which triad of conditions does this pattern suggest?

Disordered eating, polycystic ovary syndrome, stress fractures
Overtraining syndrome, iron deficiency, vitamin D deficiency
Celiac disease, anemia, hypothyroidism
Female Athlete Triad: low energy availability, menstrual dysfunction, low bone density (Correct answer)

Correct answer: Female Athlete Triad: low energy availability, menstrual dysfunction, low bone density

The Female Athlete Triad is characterized by low energy availability (with or without disordered eating), menstrual dysfunction, and low bone mineral density.

Question 30: Which of the following eating behaviors is considered developmentally NORMAL for a toddler age 18–24 months?

Requiring adult assistance to self-feed with a spoon
Consuming adult-sized portions at each meal
Accepting all new foods offered without resistance
Food neophobia and preference for familiar foods (Correct answer)

Correct answer: Food neophobia and preference for familiar foods

Food neophobia (fear or rejection of new foods) peaks between ages 18–24 months and is a normal developmental phase reflecting the toddler's increasing autonomy.

Question 31: Which type of budget projects expected revenues and expenses for a set period and is used as a financial plan before the period begins?

Operating budget (Correct answer)
Cash flow budget
Capital budget
Zero-based budget

Correct answer: Operating budget

An operating budget outlines projected revenues and expenses for day-to-day operations over a defined future period, typically one fiscal year.

Question 32: In a critically ill patient receiving enteral nutrition, which finding best indicates that gastric feeding should be held and a different approach considered?

Blood glucose of 160 mg/dL
Persistent vomiting with signs of aspiration risk (Correct answer)
Gastric residual volume of 150 mL
Soft bowel sounds present

Correct answer: Persistent vomiting with signs of aspiration risk

Persistent vomiting with aspiration risk is a clinical indication to hold gastric feeding and consider post-pyloric feeding, as GRV alone is no longer used as the primary indicator for intolerance.

Question 33: An RDN suspects a colleague is providing inaccurate nutrition advice that could harm patients. What is the appropriate action?

Address the concern through appropriate professional or institutional channels (Correct answer)
Ask patients to file complaints directly with the state board
Ignore the situation to avoid workplace conflict
Publicly post about the colleague's errors on social media

Correct answer: Address the concern through appropriate professional or institutional channels

RDNs have an ethical duty to report unsafe practices through proper channels such as supervisors, ethics committees, or the state licensing board.

Question 34: What is the minimum degree requirement to sit for the RDN credentialing exam starting January 1, 2024?

Doctoral degree
Associate's degree
Master's degree (Correct answer)
Bachelor's degree

Correct answer: Master's degree

As of January 1, 2024, a minimum of a master's degree is required to sit for the RDN credentialing examination.

Question 35: What is the primary purpose of professional certification in Food Service Management?

To replace practical experience
To validate competency and knowledge in the field (Correct answer)
To meet legal requirements only
To increase salary automatically

Correct answer: To validate competency and knowledge in the field

Certification validates that a professional has met established standards of knowledge and competency in Food Service Management.

Question 36: What is the primary accrediting body for dietetics education programs in the United States?

Commission on Dietetic Registration (CDR)
Accreditation Council for Education in Nutrition and Dietetics (ACEND) (Correct answer)
National Nutrition Council
American Dietetic Association

Correct answer: Accreditation Council for Education in Nutrition and Dietetics (ACEND)

The Accreditation Council for Education in Nutrition and Dietetics (ACEND) is the sole accrediting agency for education programs preparing students for careers as RDNs and Nutrition and Dietetics Technicians, Registered (NDTRs). ACEND ensures these programs meet rigorous standards for quality and effectiveness. This accreditation is crucial for graduates to be eligible for supervised practice and the RDN examination.

Question 37: Which document must an RDN complete as part of CDR's recertification process to demonstrate ongoing professional development planning?

Competency Assessment Checklist
Annual Performance Review Form
Professional Development Portfolio (PDP) (Correct answer)
Continuing Education Transcript Request

Correct answer: Professional Development Portfolio (PDP)

CDR's Professional Development Portfolio (PDP) is required for recertification and includes a self-assessment, learning plan, and documentation of completed CPE activities.

Question 38: A patient with advanced heart failure has cardiac cachexia. What is the most appropriate dietary counseling regarding sodium and fluid?

No sodium restriction needed if on diuretics
High-sodium diet to support blood pressure
Restrict sodium to <2,000 mg/day and fluid to 1.5–2 L/day as indicated (Correct answer)
Restrict sodium to <500 mg/day for maximum benefit

Correct answer: Restrict sodium to <2,000 mg/day and fluid to 1.5–2 L/day as indicated

Current guidelines recommend sodium restriction to <2,000 mg/day with fluid restriction individualized to 1.5–2 L/day based on symptom severity in advanced heart failure.

Question 39: In which situation is collaboration an essential skill for an RDN?

Advising a patient as part of a healthcare team (Correct answer)
Delivering a nutrition seminar to the public
Working independently on a dietary study
Calculating food costs for a catering company

Correct answer: Advising a patient as part of a healthcare team

Collaboration is a critical skill for RDNs, particularly when working within a healthcare team. When advising a patient, an RDN must effectively communicate and coordinate with physicians, nurses, and other specialists to ensure a holistic and integrated approach to patient care. This teamwork ensures that nutrition interventions align with the patient's overall medical treatment plan.

Question 40: What is the purpose of a risk assessment?

To identify potential hazards and determine mitigation measures (Correct answer)
To track inventory levels
To calculate financial budgets
To assign work shifts

Correct answer: To identify potential hazards and determine mitigation measures

Risk assessments identify potential hazards, evaluate the likelihood and severity of harm, and determine appropriate controls to minimize risk.

Question 41: What is the fire triangle?

Three fire escape routes
Three fire departments
Three types of fire extinguishers
Heat, fuel, and oxygen — the three elements needed for fire (Correct answer)

Correct answer: Heat, fuel, and oxygen — the three elements needed for fire

The fire triangle illustrates the three elements required for combustion: heat (ignition source), fuel (combustible material), and oxygen. Removing any one element extinguishes the fire.

Question 42: Which type of state credential law is MOST restrictive, limiting both the title and the practice of nutrition services?

Licensure (Correct answer)
Registration
Statutory certification
Exemption law

Correct answer: Licensure

Licensure is the most restrictive form of credentialing, prohibiting both the use of protected titles and the practice of defined activities without the license.

Question 43: A patient in long-term care has a feeding tube and the RDN recommends a formula change. Who must approve this change before implementation?

The attending or ordering physician (Correct answer)
The facility administrator
The nursing staff responsible for the patient
The patient's family member designated as power of attorney

Correct answer: The attending or ordering physician

In most facility settings, formula changes for tube-fed patients require a physician's order, though the RDN's recommendation is a critical part of the process.

Question 44: A patient with hypothyroidism asks when to take their levothyroxine in relation to meals. As a dietitian, the correct guidance is:

Timing relative to food has no clinical significance
Take with orange juice to enhance absorption
Take on an empty stomach 30–60 minutes before breakfast, avoiding coffee and high-fiber foods (Correct answer)
Take with a high-calcium meal for best absorption

Correct answer: Take on an empty stomach 30–60 minutes before breakfast, avoiding coffee and high-fiber foods

Levothyroxine absorption is significantly impaired by food, coffee, calcium, iron, and high-fiber diets; it must be taken on an empty stomach 30–60 minutes before eating for consistent absorption.

Question 45: Which practice setting employs RDNs primarily to assess and treat eating disorders?

School lunch programs
Food safety laboratories
Eating disorder treatment centers (Correct answer)
Correctional facilities

Correct answer: Eating disorder treatment centers

Eating disorder treatment centers are specialized settings where RDNs provide MNT and nutrition rehabilitation for patients with anorexia, bulimia, and related conditions.

Question 46: An RDN working in private practice receives a subpoena for a client's medical nutrition therapy records. What is the appropriate response?

Refuse the subpoena as it violates HIPAA
Destroy the records to protect the client's privacy
Consult with a legal advisor and comply with the subpoena according to applicable law (Correct answer)
Release all records immediately without reviewing the subpoena details

Correct answer: Consult with a legal advisor and comply with the subpoena according to applicable law

A valid legal subpoena may override normal HIPAA protections, so the RDN should seek legal counsel and comply with applicable laws.

Question 47: A community nutrition program manager planning federal WIC services operates in which sector?

Sports performance center
Public health/government (Correct answer)
Corporate food service
Acute care hospital

Correct answer: Public health/government

WIC (Women, Infants, and Children) is a federally funded nutrition program administered through state and local public health agencies.

Question 48: An RDN practicing in a state with statutory certification law must:

Obtain state licensure before using any nutrition-related title
Practice only under physician supervision regardless of credential
Submit CPE credits to the state board instead of CDR
Hold the RDN credential to use protected titles but may practice without a license (Correct answer)

Correct answer: Hold the RDN credential to use protected titles but may practice without a license

Statutory certification restricts use of protected titles (such as 'licensed dietitian') but does not limit the scope of practice for uncredentialed individuals.

Question 49: Which metric is used to compare the burden of diseases across populations by combining years of life lost due to premature death and years lived with disability?

QALY
NNT
DALY (Correct answer)
YLD alone

Correct answer: DALY

DALYs (Disability-Adjusted Life Years) combine years of life lost (YLL) to premature death plus years lived with disability (YLD) to quantify overall disease burden.

Question 50: What is the primary purpose of the Commission on Dietetic Registration (CDR) Professional Development Portfolio?

To ensure RDNs engage in ongoing learning relevant to their area of practice (Correct answer)
To provide legal documentation in malpractice cases
To document patient outcomes for quality improvement
To track an RDN's work history and salary progression

Correct answer: To ensure RDNs engage in ongoing learning relevant to their area of practice

The CDR Professional Development Portfolio requires RDNs to complete continuing education that is relevant and applicable to their individual scope of practice.

Question 51: Which organization is primarily responsible for setting credentialing standards for the RDN credential in the United States?

National Board of Dietetic Examiners (NBDE)
American Dietetic Association (ADA)
Academy of Nutrition and Dietetics (AND)
Commission on Dietetic Registration (CDR) (Correct answer)

Correct answer: Commission on Dietetic Registration (CDR)

CDR is the credentialing agency for the Academy of Nutrition and Dietetics and administers the RDN examination and recertification.

Question 52: Under the Americans with Disabilities Act (ADA), which obligation does a food service employer have regarding employees with disabilities?

Provide separate break rooms and dining areas
Make reasonable accommodations unless it causes undue hardship (Correct answer)
Reassign all physically demanding tasks to non-disabled employees
Offer lower performance standards as an accommodation

Correct answer: Make reasonable accommodations unless it causes undue hardship

The ADA requires employers to provide reasonable accommodations for qualified individuals with disabilities unless doing so would cause undue hardship.

Question 53: A malnutrition screening tool has high sensitivity. This PRIMARILY means the tool:

Correctly identifies most people WITHOUT malnutrition (high true negative rate)
Correctly identifies most people WITH malnutrition (high true positive rate) (Correct answer)
Is also highly specific
Has a very low false positive rate

Correct answer: Correctly identifies most people WITH malnutrition (high true positive rate)

Sensitivity is the ability of a test to correctly identify true positives — in this case, patients who actually have malnutrition.

Question 54: Which document outlines the specific duties, responsibilities, and qualifications required for a foodservice position?

Job description (Correct answer)
Performance appraisal form
Policy and procedure manual
Organizational chart

Correct answer: Job description

A job description details the specific duties, qualifications, reporting relationships, and working conditions for a specific position.

Question 55: An RDN who has completed a fellowship in integrative and functional nutrition would most likely address which aspect of patient care?

Only pediatric growth monitoring
Only intravenous parenteral nutrition
Root-cause analysis using lifestyle, gut health, and nutrient-based interventions (Correct answer)
Exclusively surgical nutrition support

Correct answer: Root-cause analysis using lifestyle, gut health, and nutrient-based interventions

Integrative and functional nutrition dietitians use a whole-person approach that examines root causes including gut microbiome, nutrient status, and lifestyle factors.

Question 56: Which study design is BEST suited to establish a causal relationship between a dietary pattern and disease?

Randomized controlled trial (Correct answer)
Ecological study
Cross-sectional study
Case-control study

Correct answer: Randomized controlled trial

RCTs are the gold standard for establishing causality because randomization controls for confounding variables, allowing true cause-and-effect relationships to be determined.

Question 57: A patient with liver cirrhosis and hepatic encephalopathy is being assessed for nutrition support. Which dietary approach is currently recommended?

Protein restriction to 0.6 g/kg/day to reduce ammonia
High-fat, low-carbohydrate diet to spare protein
NPO with total parenteral nutrition only
Normal-to-high protein intake (1.2–1.5 g/kg/day) with branched-chain amino acids if needed (Correct answer)

Correct answer: Normal-to-high protein intake (1.2–1.5 g/kg/day) with branched-chain amino acids if needed

Current evidence supports adequate protein intake (1.2–1.5 g/kg/day) in cirrhosis; protein restriction worsens sarcopenia and outcomes without reliably reducing encephalopathy.

Question 58: A Coordinated Program in Dietetics (CP) differs from a traditional DPD + internship pathway primarily because:

CPs integrate academic coursework and supervised practice simultaneously (Correct answer)
CPs require a doctoral degree for admission
CPs exempt graduates from the CDR examination
CPs are only offered at community colleges

Correct answer: CPs integrate academic coursework and supervised practice simultaneously

Coordinated Programs integrate didactic coursework and supervised practice concurrently, allowing graduates to be eligible for the CDR exam upon program completion.

Question 59: Why is continuing education important in Lifecycle Nutrition?

It is not important after certification
To stay current with evolving standards and practices (Correct answer)
Only for re-certification requirements
To network only

Correct answer: To stay current with evolving standards and practices

Continuing education keeps professionals updated with the latest developments, standards, and best practices in their field.

Question 60: Which study approach is most effective for Food Service Management material?

Passive re-reading of notes
Active recall with practice questions (Correct answer)
Highlighting all text
Studying for very long sessions without breaks

Correct answer: Active recall with practice questions

Active recall through practice questions is the most effective study method, as it strengthens memory retrieval pathways.

Question 61: What certification might an RDN pursue to specialize in working with individuals with diabetes?

Renal Nutrition Specialist Certification
Geriatric Nutrition Certification
Certified Diabetes Care and Education Specialist (CDCES) (Correct answer)
Certified Sports Dietitian (CSSD)

Correct answer: Certified Diabetes Care and Education Specialist (CDCES)

The Certified Diabetes Care and Education Specialist (CDCES) credential is a highly recognized specialization for healthcare professionals, including RDNs, who educate and support individuals with diabetes. This certification demonstrates advanced knowledge and expertise in diabetes management, self-care education, and prevention strategies. It allows RDNs to provide specialized and comprehensive care to this patient population.

Question 62: The urea cycle requires which amino acid as a direct nitrogen donor to form carbamoyl phosphate?

Glutamine (via glutamate) (Correct answer)
Aspartate
Alanine
Glycine

Correct answer: Glutamine (via glutamate)

Glutamine donates its amide nitrogen (via glutaminase yielding glutamate, then glutamate dehydrogenase yielding NH4+) to carbamoyl phosphate synthetase I to initiate the urea cycle.

Question 63: Which HACCP principle involves establishing procedures to verify that the HACCP system is working effectively?

Principle 6 – Establish verification procedures (Correct answer)
Principle 4 – Establish monitoring procedures
Principle 5 – Establish corrective actions
Principle 7 – Establish record-keeping

Correct answer: Principle 6 – Establish verification procedures

Principle 6 of HACCP is to establish verification procedures to confirm the system is functioning as intended and CCPs are under control.

Question 64: An RDN specializing in renal nutrition who wants formal recognition of expertise should pursue which CDR board certification?

CSR (Correct answer)
CSP
CSSD
CSOWM

Correct answer: CSR

CSR stands for Certified Specialist in Renal Nutrition, a CDR board certification for RDNs with advanced renal dietetics practice.

Question 65: A breastfeeding mother asks about her iodine needs. Compared to her pre-pregnancy requirement of 150 mcg/day, what is the RDA during lactation?

350 mcg/day
220 mcg/day
290 mcg/day (Correct answer)
150 mcg/day

Correct answer: 290 mcg/day

The iodine RDA increases to 290 mcg/day during lactation to support adequate secretion of iodine in breast milk for infant thyroid function.

Question 66: Which scheduling approach assigns employees to a set schedule that rotates in a predictable pattern, such as 5 days on followed by 2 days off?

Cyclical scheduling (Correct answer)
Split-shift scheduling
Flexible scheduling
On-call scheduling

Correct answer: Cyclical scheduling

Cyclical scheduling uses a repeating rotation pattern, making it predictable for employees and easier for managers to plan staffing.

Question 67: Which degree is the minimum requirement to become a Registered Dietitian Nutritionist (RDN)?

Associate’s Degree
Doctoral Degree
Master’s Degree
Bachelor’s Degree (Correct answer)

Correct answer: Bachelor’s Degree

To become a Registered Dietitian Nutritionist (RDN), candidates must complete a minimum of a bachelor's degree from an accredited program. This degree provides the foundational knowledge in nutrition science, food systems, and dietetics practice. While advanced degrees are common, the bachelor's degree is the initial educational prerequisite for eligibility.

Question 68: Which foodborne illness is caused by a preformed toxin and typically causes symptoms within 1–6 hours of ingestion, with no fever?

Shigellosis
Campylobacteriosis
Salmonellosis
Staphylococcal food poisoning (Correct answer)

Correct answer: Staphylococcal food poisoning

Staphylococcus aureus produces a heat-stable enterotoxin in food; since illness results from the preformed toxin, onset is rapid (1–6 hours) and typically lacks fever.

Question 69: Which career milestone typically allows an RDN to supervise and sign off on dietetic intern competencies?

Being a credentialed preceptor with adequate supervised practice experience (Correct answer)
Earning a specialty board certification
Completing a doctoral degree
Holding any active RDN credential for at least 6 months

Correct answer: Being a credentialed preceptor with adequate supervised practice experience

Preceptors for dietetic interns must be credentialed RDNs with sufficient supervised practice experience and often complete preceptor training.

Question 70: An RDN who conducts randomized controlled trials on dietary interventions and publishes peer-reviewed findings is primarily in which role?

Health coach
Food service director
Nutrition researcher/scientist (Correct answer)
Outpatient clinical dietitian

Correct answer: Nutrition researcher/scientist

Nutrition researchers design and conduct studies to generate evidence that informs dietary guidelines and clinical practice.

Question 71: A food handler returns to work after recovering from a confirmed Norovirus illness. When is it safe to resume food handling duties?

24 hours after last vomiting episode
After being symptom-free for at least 48 hours (Correct answer)
After completing a full course of antibiotics
As soon as a doctor clears them

Correct answer: After being symptom-free for at least 48 hours

FDA Food Code requires food handlers to be symptom-free for at least 48 hours after the last episode of vomiting or diarrhea before returning to work.

Question 72: A patient with phenylketonuria (PKU) becomes pregnant. The most critical MNT intervention before and during pregnancy is:

Maintain strict low-phenylalanine diet with blood Phe levels below 6 mg/dL (Correct answer)
Increase phenylalanine intake to support fetal growth
Switch to a high-protein diet for fetal development
Discontinue the PKU formula as it is unnecessary in adults

Correct answer: Maintain strict low-phenylalanine diet with blood Phe levels below 6 mg/dL

Maternal PKU syndrome causes severe fetal damage; strict control of blood phenylalanine below 6 mg/dL ideally beginning before conception is essential to prevent microcephaly, heart defects, and intellectual disability.

Question 73: Publication bias in nutrition research MOST often refers to:

The tendency for journals to preferentially publish positive or statistically significant findings (Correct answer)
Errors in the bibliographic references of published studies
Bias introduced when authors publish under pen names
Restricting publications to only high-impact-factor journals

Correct answer: The tendency for journals to preferentially publish positive or statistically significant findings

Publication bias occurs when studies with positive or statistically significant results are more likely to be published than those with null or negative results, skewing the available evidence base.

Question 74: In the PRECEDE-PROCEED planning model, which phase involves identifying predisposing, reinforcing, and enabling factors?

Phase 3: Educational and ecological assessment (Correct answer)
Phase 5: Administrative and policy assessment
Phase 1: Social assessment
Phase 6: Implementation

Correct answer: Phase 3: Educational and ecological assessment

Phase 3 (Educational and ecological assessment) of PRECEDE identifies predisposing factors (knowledge, attitudes), reinforcing factors (social support), and enabling factors (skills, resources).

Question 75: A dietitian discovers that a commercial kitchen has been thawing frozen meat by leaving it on the counter at room temperature. Which FDA-approved thawing method should be recommended instead?

Placing in hot water at 110°F
Refrigerator thawing at 41°F or below (Correct answer)
Thawing in a warm oven at 175°F
Leaving on counter if covered with foil

Correct answer: Refrigerator thawing at 41°F or below

Refrigerator thawing is the safest method as it keeps food out of the temperature danger zone throughout the thawing process.

Question 76: An RDN who knowingly submits false CPE documentation during recertification is subject to which CDR action?

Public reprimand without credential action
Mandatory additional CPE hours only
Revocation or suspension of the RDN credential (Correct answer)
Referral to state licensing board only

Correct answer: Revocation or suspension of the RDN credential

CDR may revoke or suspend the RDN credential for ethical violations such as submitting fraudulent CPE documentation.

Question 77: An RDN is counseling an older adult at risk for sarcopenia. Which combination of interventions has the strongest evidence for preserving muscle mass?

Caloric restriction and flexibility training
High sodium intake with aerobic-only exercise
Protein supplements alone without physical activity
Adequate protein intake (1.0–1.2 g/kg/day) combined with resistance exercise (Correct answer)

Correct answer: Adequate protein intake (1.0–1.2 g/kg/day) combined with resistance exercise

The combination of adequate protein intake (1.0–1.2 g/kg/day) and resistance exercise provides synergistic stimulation of muscle protein synthesis to prevent sarcopenia.

Question 78: Which lab value most accurately reflects chronic protein-energy malnutrition over a 3-month period?

Prealbumin (transthyretin)
Hemoglobin A1c pattern
C-reactive protein
Serum albumin (Correct answer)

Correct answer: Serum albumin

Although not highly sensitive to acute changes, serum albumin's 20-day half-life and volume of distribution make it a marker of chronic nutritional and inflammatory status.

Question 79: A foodservice manager wants to verify that a dishwasher is sanitizing effectively. For a high-temperature machine, what minimum final rinse temperature must be reached on dish surfaces?

165°F (74°C)
160°F (71°C) (Correct answer)
140°F (60°C)
180°F (82°C)

Correct answer: 160°F (71°C)

The FDA Food Code requires high-temperature dish machines to achieve a surface temperature of at least 160°F on food contact surfaces for effective sanitization.

Question 80: Which of the following is required for RDN credential maintenance?

Completing a new degree every 5 years
Only state licensure renewal
Retaking the CDR exam every 10 years
Ongoing professional education (Correct answer)

Correct answer: Ongoing professional education

To maintain the RDN credential, Registered Dietitian Nutritionists are required to complete ongoing professional education, also known as continuing professional education (CPE) units. This ensures that RDNs stay current with the latest scientific advancements, practice guidelines, and ethical standards in the field of nutrition and dietetics. This commitment to lifelong learning is essential for competent practice.

Question 81: When an RDN writes a nutrition diagnosis, which standardized format is used?

SOAP note format
PES statement (Problem, Etiology, Signs/Symptoms) (Correct answer)
ICD-10 diagnostic coding
ADIME format only

Correct answer: PES statement (Problem, Etiology, Signs/Symptoms)

Nutrition diagnoses are written as PES statements that link the nutrition problem to its cause and the evidence supporting it.

Question 82: A community needs assessment reveals high rates of iron-deficiency anemia among refugee children. Which program addresses micronutrient gaps through food fortification at the population level?

Mandatory iron fortification of cereal grain products (Correct answer)
National School Lunch Program
Universal salt iodization
USDA MyPlate campaign

Correct answer: Mandatory iron fortification of cereal grain products

Mandatory iron fortification of enriched cereal grain products is a US population-level strategy that has significantly reduced iron-deficiency anemia rates.

Question 83: In which setting is an RDN likely to work as a food service manager?

Fitness centers
Retail stores
Research laboratories
School cafeterias or corporate dining facilities (Correct answer)

Correct answer: School cafeterias or corporate dining facilities

RDNs often work as food service managers in institutional settings where large-scale meal planning and preparation are required. School cafeterias and corporate dining facilities are prime examples, where RDNs ensure that meals meet nutritional standards, accommodate dietary restrictions, and adhere to budgetary constraints. They oversee staff, manage operations, and maintain food safety.

Question 84: What is the purpose of the 'Five Rights' in medication administration?

To organize inventory
To prevent medication errors: right patient, drug, dose, route, time (Correct answer)
To classify medications
To determine pricing

Correct answer: To prevent medication errors: right patient, drug, dose, route, time

The Five Rights serve as a safety checklist to prevent medication errors during every administration.

Question 85: A patient post-Roux-en-Y gastric bypass is at highest risk for deficiency of which nutrient due to bypass of the primary absorption site?

Vitamin D
Iron (Correct answer)
Vitamin C
Selenium

Correct answer: Iron

Iron is primarily absorbed in the duodenum and proximal jejunum, which are bypassed in RYGB, placing patients at high risk for iron deficiency anemia.

Question 86: What examination must candidates pass to earn the RDN credential?

National Nutrition Assessment Exam
Commission on Dietetic Registration Exam (Correct answer)
Dietetics Licensing Board Exam
Certified Clinical Nutritionist Exam

Correct answer: Commission on Dietetic Registration Exam

After completing an ACEND-accredited didactic program and supervised practice, candidates must pass the national examination administered by the Commission on Dietetic Registration (CDR). This comprehensive exam assesses the candidate's knowledge and skills across various domains of dietetics practice. Successfully passing this exam is the final step to earning the RDN credential.

Question 87: A patient reports eating 'a handful of almonds' as a snack. Which tool would BEST help convert this to grams?

Nutrient database only
MyPlate food guide
Food model aids or portion estimation tools (Correct answer)
Diet history form

Correct answer: Food model aids or portion estimation tools

Portion estimation tools such as food models, measuring cups, and hand-size guides help translate vague descriptions into measurable quantities.

Question 88: In the context of foodborne illness surveillance, what does the term 'outbreak' require by CDC definition?

At least 10 confirmed cases from a single food establishment
Two or more people experiencing similar illness linked to the same food source (Correct answer)
Three or more hospitalizations from a suspected contaminated food
A single case of a notifiable foodborne disease

Correct answer: Two or more people experiencing similar illness linked to the same food source

The CDC defines a foodborne disease outbreak as two or more persons experiencing a similar illness resulting from ingestion of a common food.

Question 89: A foodservice manager is evaluating a vendor. Which factor is MOST critical when selecting a food supplier for a healthcare facility?

Proximity to the facility to reduce delivery time
Compliance with food safety standards and regulatory requirements (Correct answer)
Ability to provide the widest product variety
Lowest unit price available

Correct answer: Compliance with food safety standards and regulatory requirements

In healthcare settings, vendor compliance with food safety standards (e.g., FDA, USDA inspections) takes priority to protect vulnerable patient populations.

Question 90: Under CDR's Future Education Model, the Supervised Practice component is known as:

Dietetic Internship Program (DIP)
Graduate Dietetic Internship (GDI)
Individualized Supervised Practice Pathway (ISPP)
Future Education Model Supervised Practice Program (FSMPP) (Correct answer)

Correct answer: Future Education Model Supervised Practice Program (FSMPP)

The Future Education Model Supervised Practice Program (FSMPP) is the supervised practice component aligned with ACEND's redesigned Future Education Model.

Question 91: Which forecasting method uses historical data from a similar prior period to predict future meal counts?

Prior-period adjustment method
Linear regression
Moving average method (Correct answer)
Time-series analysis

Correct answer: Moving average method

The moving average method averages meal counts from multiple prior periods to smooth out fluctuations and forecast future demand.

Question 92: Which of the following is a key advantage of opening a private practice as an RDN?

Guaranteed salary regardless of client volume
Employer-provided liability insurance
Autonomy to set fees, hours, and specialty focus (Correct answer)
Automatic insurance reimbursement for all services

Correct answer: Autonomy to set fees, hours, and specialty focus

Private practice offers RDNs significant autonomy over their schedule, specialty, fees, and business structure.

Question 93: A dietitian reviewing a long-term care facility's food safety program finds that hot foods are being held at 130°F in a steam table. What corrective action should be recommended?

The temperature is acceptable because it exceeds 125°F
Reduce holding time to 2 hours maximum at that temperature
Increase steam table temperature to maintain foods at 135°F or above (Correct answer)
Reheat all foods to 165°F and then return to steam table at 130°F

Correct answer: Increase steam table temperature to maintain foods at 135°F or above

FDA Food Code requires hot foods to be held at a minimum of 135°F; 130°F falls within the danger zone and is not compliant.

Question 94: Which of the following best describes the role of ACEND in dietetics education?

Sets national nutrition policy for federal food programs
Accredits dietetics education programs and supervised practice programs (Correct answer)
Licenses individual RDNs in each state
Administers the CDR credentialing examination

Correct answer: Accredits dietetics education programs and supervised practice programs

ACEND is responsible for accrediting dietetics education programs (academic and supervised practice) to ensure they meet established quality standards.

Question 95: According to FDA guidelines, what is the maximum time ready-to-eat refrigerated foods can be held after preparation before they must be discarded?

3 days
10 days
7 days (Correct answer)
5 days

Correct answer: 7 days

The FDA Food Code specifies that ready-to-eat foods prepared from commercially processed ingredients can be held for a maximum of 7 days at 41°F or lower.

Question 96: The Academy of Nutrition and Dietetics Code of Ethics applies to whom?

All RDNs and NDTRs regardless of Academy membership (Correct answer)
Only RDNs who are Academy members
Academy members and their employers
Only dietitians employed in clinical settings

Correct answer: All RDNs and NDTRs regardless of Academy membership

The Code of Ethics applies to all credentialed practitioners — RDNs and NDTRs — whether or not they are members of the Academy.

Question 97: ACEND stands for which accrediting body relevant to dietetics education?

American Council for Education in Nutrition and Dietetics
Accredited Commission for Entry-level Nutrition and Dietetics
Accreditation Council for Education in Nutrition and Dietetics (Correct answer)
Academy Council for Evaluated Nutrition and Dietetics

Correct answer: Accreditation Council for Education in Nutrition and Dietetics

ACEND — Accreditation Council for Education in Nutrition and Dietetics — is the accrediting body for dietetic education programs.

Question 98: Which scenario represents an RDN operating outside their scope of practice?

Educating a diabetes patient on carbohydrate counting
Diagnosing irritable bowel syndrome based on dietary history (Correct answer)
Recommending increased fiber intake for a constipated client
Developing a gluten-free meal plan for a celiac patient

Correct answer: Diagnosing irritable bowel syndrome based on dietary history

Diagnosing medical conditions is the scope of licensed physicians, not RDNs, even if diet history suggests a GI disorder.

Question 99: How many ethics CPE units must an RDN complete during each 5-year recertification cycle?

None required
At least 3 units
At least 5 units
At least 1 unit (Correct answer)

Correct answer: At least 1 unit

CDR requires RDNs to complete a minimum of 1 CPE unit in ethics during each 5-year recertification cycle.

Question 100: Attenuation bias in nutrition research refers to which phenomenon?

Bias from excluding non-responders
Overestimation of dietary effects due to large sample sizes
Underestimation of diet-disease associations due to measurement error (Correct answer)
Confounding introduced by supplement use

Correct answer: Underestimation of diet-disease associations due to measurement error

Measurement error in dietary assessment attenuates (weakens) observed associations between diet and disease outcomes toward the null.

Question 101: Which performance improvement tool involves identifying the root cause of a problem using a diagram that resembles a fish skeleton?

Flow diagram
Pareto chart
Control chart
Fishbone (Ishikawa) diagram (Correct answer)

Correct answer: Fishbone (Ishikawa) diagram

The Ishikawa (fishbone) diagram visually maps cause-and-effect relationships to identify the root cause(s) of a problem in a structured way.

Question 102: To sit for the CSSD (Certified Specialist in Sports Dietetics) exam, an RDN must have a minimum of how many hours in sports dietetics practice?

500 hours
2,000 hours
3,000 hours
1,500 hours (Correct answer)

Correct answer: 1,500 hours

CDR requires 1,500 hours of sports nutrition practice within the past 5 years to be eligible for the CSSD exam.

Question 103: Which document outlines the entry-level competencies that newly credentialed RDNs are expected to demonstrate?

ACEND Standards of Education
Standards of Professional Performance for RDNs
CDR Candidate Handbook
Entry-Level Dietetics Practice Competencies (Correct answer)

Correct answer: Entry-Level Dietetics Practice Competencies

The Entry-Level Dietetics Practice Competencies outline the specific knowledge and skills expected of an RDN upon entering the profession.

Question 104: Which program replaced the Didactic Program in Dietetics (DPD) as part of the Future Education Model?

Individualized Supervised Practice Pathway
Accredited Didactic Dietetics Program
Coordinated Program in Dietetics
Future Education Model Academic Program (Correct answer)

Correct answer: Future Education Model Academic Program

The Future Education Model Academic Program replaced the traditional DPD under ACEND's Future Education Model.

Question 105: When an RDN moves to a new state, what is the first step they should take regarding their professional credentials?

Automatically transfer their license through CDR's national database
Contact the Academy of Nutrition and Dietetics to notify them of relocation
Verify CDR credential status is current and then research the new state's licensure requirements (Correct answer)
Surrender their current state license and reapply from scratch

Correct answer: Verify CDR credential status is current and then research the new state's licensure requirements

RDNs must ensure their CDR credential is current and then research the specific licensure or certification requirements of the new state before practicing.

Question 106: A patient with end-stage renal disease on peritoneal dialysis has persistent malnutrition. Which unique nutrient consideration applies to peritoneal dialysis compared to hemodialysis?

Sodium restriction is unnecessary in peritoneal dialysis
Higher potassium restriction is needed
Protein requirements are lower than for hemodialysis
Significant glucose absorption from dialysate must be counted in caloric intake (Correct answer)

Correct answer: Significant glucose absorption from dialysate must be counted in caloric intake

Peritoneal dialysis uses a glucose-based dialysate that provides a significant and often unrecognized caloric load (400–800 kcal/day), which must be factored into total energy calculations to prevent obesity and dyslipidemia.

Question 107: Which ethical principle requires an RDN to act in the best interest of the client, even when it conflicts with institutional policy?

Autonomy
Justice
Nonmaleficence
Beneficence (Correct answer)

Correct answer: Beneficence

Beneficence obligates practitioners to actively promote the client's well-being as a primary professional duty.

Question 108: What should you do when encountering a difficult question?

Skip it permanently
Stare at it until you figure it out
Mark it, move on, and return to it later (Correct answer)
Guess immediately without reading

Correct answer: Mark it, move on, and return to it later

Mark difficult questions and move on to avoid wasting time. After completing easier questions, return with fresh perspective and remaining time.

Question 109: A client asks their RDN for advice on which herbal supplements to take. What is the most appropriate RDN response?

Refer the client exclusively to a pharmacist with no further involvement
Recommend widely marketed supplements without research review
Refuse to discuss supplements as they are outside all RDN scopes
Assess the client's situation and provide evidence-based information within scope (Correct answer)

Correct answer: Assess the client's situation and provide evidence-based information within scope

RDNs can and should provide evidence-based guidance on dietary supplements while staying within their scope and collaborating with other providers when appropriate.

Question 110: The USDA's 'Dietary Guidelines for Americans' recommends that sodium intake for most adults should be limited to no more than:

2,000 mg/day
3,000 mg/day
1,500 mg/day
2,300 mg/day (Correct answer)

Correct answer: 2,300 mg/day

The Dietary Guidelines for Americans recommend limiting sodium intake to less than 2,300 mg per day for adults, which equals approximately 1 teaspoon of salt.

Question 111: A hospital cafeteria wants to reduce plate waste. Which strategy is most directly effective?

Increasing portion sizes to improve satisfaction
Standardizing all meals to a single menu
Implementing a selective menu with patient preferences (Correct answer)
Limiting meal service to two times per day

Correct answer: Implementing a selective menu with patient preferences

Selective menus allow patients to choose preferred foods, which significantly reduces plate waste and improves intake.

Question 112: What role does ethics play in Community Nutrition practice?

Ethics is optional in professional settings
It only matters for legal compliance
It only applies to managers
It guides professional conduct and protects stakeholders (Correct answer)

Correct answer: It guides professional conduct and protects stakeholders

Professional ethics provide frameworks for responsible decision-making, ensuring practitioners act in the best interest of those they serve.

Question 113: A client's 3-day food record shows an average energy intake of 1,200 kcal/day, but their weight is stable. What phenomenon does this BEST illustrate?

Energy intake underreporting (Correct answer)
Hypermetabolism
Adaptive thermogenesis
Dietary recall bias

Correct answer: Energy intake underreporting

Stable weight despite reportedly low energy intake is a classic sign of underreporting, particularly common in overweight individuals.

Question 114: A standardized recipe specifies a yield of 50 portions at 4 oz each. The manager needs 75 portions. What is the conversion factor?

2.00
1.25
1.50 (Correct answer)
0.67

Correct answer: 1.50

Conversion factor = desired yield ÷ original yield = 75 ÷ 50 = 1.50; all ingredient quantities are multiplied by 1.50.

Question 115: A patient receiving long-term enteral nutrition via PEG tube develops diarrhea. After ruling out C. difficile and medication causes, which formula modification should be tried first?

Switch to an elemental (hydrolyzed) formula
Add a fiber-containing formula or soluble fiber supplementation (Correct answer)
Switch to parenteral nutrition immediately
Increase the infusion rate to reduce bowel transit time

Correct answer: Add a fiber-containing formula or soluble fiber supplementation

Adding soluble fiber (e.g., pectin, guar gum) or switching to a fiber-containing formula helps normalize stool consistency by promoting water absorption and healthy microbiome.

Question 116: CDR requires RDNs to complete how many Continuing Professional Education (CPE) units per 5-year recertification cycle?

150 CPE units
75 CPE units
100 CPE units (Correct answer)
50 CPE units

Correct answer: 100 CPE units

RDNs must complete 75 CPE units every 5-year recertification cycle, with at least 1 unit in ethics.

Question 117: A public health dietitian conducts a cross-sectional study on sugar-sweetened beverage consumption in a county. What is the primary limitation of this study design?

It requires 5+ years of follow-up
It is too expensive for community use
It cannot establish temporality or causation (Correct answer)
It cannot measure prevalence

Correct answer: It cannot establish temporality or causation

Cross-sectional studies measure exposure and outcome at the same point in time, so they cannot determine which came first, limiting causal inference.

Question 118: Which type of foodservice system produces meals in a central kitchen and delivers them to satellite locations for service?

Assembly-serve system
Conventional system
Ready-prepared system
Commissary system (Correct answer)

Correct answer: Commissary system

A commissary (central kitchen) system prepares food centrally and distributes it to multiple satellite or receiving kitchens for final service.

Question 119: A food frequency questionnaire (FFQ) is BEST suited for which of the following research purposes?

Clinical nutrition therapy planning
Precise individual nutrient quantification
Monitoring daily intake changes
Ranking individuals by dietary exposure in epidemiological studies (Correct answer)

Correct answer: Ranking individuals by dietary exposure in epidemiological studies

FFQs are designed to rank individuals by long-term dietary patterns and are widely used in large-scale epidemiological research.

Question 120: To be eligible for a CDR Specialty Certification (e.g., CSSD, CSO), an RDN must hold the RDN credential AND demonstrate:

A minimum of 2,000 hours of specialty practice experience (Correct answer)
A doctorate in the specialty area
Publication of at least one peer-reviewed article
Five years of general dietetics practice

Correct answer: A minimum of 2,000 hours of specialty practice experience

CDR specialty certifications require the RDN credential plus a minimum of 2,000 hours of practice in the specialty area within the past 5 years.

Question 121: Which chemical sanitizer is most effective at a concentration of 200 ppm and requires a contact time of at least 7 seconds for food contact surfaces?

Hydrogen peroxide
Chlorine (bleach) (Correct answer)
Quaternary ammonium compounds
Iodine

Correct answer: Chlorine (bleach)

Chlorine-based sanitizers at 200 ppm are highly effective and fast-acting, requiring only 7 seconds of contact time on food contact surfaces.

Question 122: An RDN transitioning from clinical practice to a health technology startup as a product nutrition advisor represents which career trend?

Mandatory retraining as a software engineer
Replacement of RDNs by artificial intelligence
Expansion of dietetics into entrepreneurship and digital health sectors (Correct answer)
Decline in the relevance of the RDN credential

Correct answer: Expansion of dietetics into entrepreneurship and digital health sectors

RDNs increasingly move into digital health, nutrition app development, and startup advisory roles, expanding the profession beyond traditional clinical settings.

Question 123: How does documentation support quality in Food Service Management?

It only serves administrative purposes
It creates records, ensures consistency, and enables improvement (Correct answer)
It is only for billing
Documentation is unnecessary overhead

Correct answer: It creates records, ensures consistency, and enables improvement

Proper documentation creates accountability, ensures consistency, supports quality improvement, and provides legal protection.

Question 124: The RDN credential must be maintained through CDR's Professional Development Portfolio (PDP). What is the primary purpose of the PDP?

To document salary history and job promotions
To guide individualized professional development based on self-assessment (Correct answer)
To track disciplinary actions taken by state licensing boards
To record years of clinical experience for credentialing renewal

Correct answer: To guide individualized professional development based on self-assessment

The PDP is a self-directed tool requiring RDNs to conduct a self-assessment and create a learning plan aligned with their professional goals.

Question 125: A dietetics student completes their academic requirements but fails to match to a dietetic internship. Which CDR pathway allows them to earn supervised practice hours outside a traditional internship?

Didactic Program in Dietetics
Distance Learning Dietetic Program
Individualized Supervised Practice Pathway (ISPP) (Correct answer)
Coordinated Program in Dietetics

Correct answer: Individualized Supervised Practice Pathway (ISPP)

The ISPP allows qualified individuals to complete supervised practice requirements under a preceptor outside of a traditional ACEND-accredited internship.

Registration Examination for Dietitians (RDN/RD)

The Commission on Dietetic Registration (CDR) Registration Examination for Dietitians (RD/RDN) is a computer-adaptive test that assesses entry-level competency across nutrition care, dietetic principles, food and nutrition program management, and foodservice systems. Passing is required to earn the Registered Dietitian Nutritionist credential.

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180 min

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