Certified Data Steward (CDS) — Questions and Answers

Question 1: What term describes a hierarchical arrangement of categories used to systematically organize data?

Data lineage
Data provenance
Data dictionary
Data taxonomy (Correct answer)

Correct answer: Data taxonomy

A data taxonomy is a hierarchical classification system that organizes data into structured categories and subcategories, similar to how biological species are classified.

Question 2: Which monitoring technique compares today's record count against the trailing 30-day average to detect anomalies?

Referential integrity checking
Volume-based trend monitoring (Correct answer)
Format validation scanning
Schema drift detection

Correct answer: Volume-based trend monitoring

Volume-based trend monitoring uses historical averages as a baseline to flag unusual spikes or drops in record counts.

Question 3: What is 'data obsolescence' in the context of lifecycle management?

Data that exceeds the storage system's capacity limits
Data that has been encrypted with an outdated algorithm
Data stored in a deprecated file format
Data that is no longer accurate, relevant, or useful for its original purpose (Correct answer)

Correct answer: Data that is no longer accurate, relevant, or useful for its original purpose

Data obsolescence refers to data that has lost its business value or accuracy over time and should be evaluated for archiving or disposal.

Question 4: In a data governance change management program, what is the primary purpose of a RACI matrix?

To map data flows between source and target systems
To rank data quality issues by severity
To schedule data backups across teams
To clarify roles by defining who is Responsible, Accountable, Consulted, and Informed for each activity (Correct answer)

Correct answer: To clarify roles by defining who is Responsible, Accountable, Consulted, and Informed for each activity

A RACI matrix eliminates ambiguity by explicitly assigning responsibility, accountability, consultation, and information rights for every governance activity.

Question 5: What is the relationship between master data and transactional data?

Master data is deleted after each transaction
They are the same type of data
Master data supports and contextualizes transactional data (Correct answer)
Transactional data overrides master data

Correct answer: Master data supports and contextualizes transactional data

Master data and transactional data have a fundamental relationship where master data provides the context for transactional data. Transactional data describes events or activities (e.g., a sale, a payment) and typically references master data entities (e.g., which customer bought which product). Thus, master data supports and contextualizes these transactions, ensuring their accuracy and meaningful interpretation.

Question 6: Which U.S. law protects health information privacy?

GDPR
HIPAA (Correct answer)
PCI DSS
CAN-SPAM

Correct answer: HIPAA

The Health Insurance Portability and Accountability Act (HIPAA) is a U.S. federal law that establishes national standards to protect sensitive patient health information. It mandates strict rules for healthcare providers, health plans, and healthcare clearinghouses regarding the privacy and security of Protected Health Information (PHI). HIPAA ensures individuals' rights over their health data and sets penalties for violations.

Question 7: Which change management model is widely used to guide organizations through structured transitions, including data governance implementations?

ITIL v4
Six Sigma DMAIC
Kotter's 8-Step Change Model (Correct answer)
Scrum framework

Correct answer: Kotter's 8-Step Change Model

Kotter's 8-Step Model provides a structured approach to organizational change, covering urgency creation, coalition building, vision, and anchoring new behaviors.

Question 8: A data steward is asked to evaluate metadata completeness for a new dataset. Which dimension should they assess first?

Whether the dataset's file size is documented
Whether the dataset has a physical index
Whether required metadata fields (owner, definition, classification) are populated (Correct answer)
Whether the dataset is stored in columnar format

Correct answer: Whether required metadata fields (owner, definition, classification) are populated

Metadata completeness is measured by whether mandatory fields—such as owner, business definition, sensitivity classification—are populated.

Question 9: Which metric expresses the proportion of records that pass all applicable data quality rules?

Mean time to detect (MTTD)
Record rejection ratio
Data error rate
Data quality score (DQ score) (Correct answer)

Correct answer: Data quality score (DQ score)

A DQ score (often expressed as a percentage) is calculated as the ratio of conforming records to total records across one or more quality dimensions.

Question 10: Which storage tier is most appropriate for data that is rarely accessed but must be retained for 7+ years for regulatory compliance?

Hot storage (SSD-backed)
Warm storage (standard HDD)
In-memory cache
Cold/archival storage (tape or deep archive) (Correct answer)

Correct answer: Cold/archival storage (tape or deep archive)

Cold or archival storage tiers offer the lowest cost for infrequently accessed data retained solely for compliance over long periods.

Question 11: During a data migration project, what is the primary purpose of running data quality checks BEFORE migration begins?

To satisfy regulatory audit requirements for the migration project
To prove the source system has no bugs before decommissioning
To reduce the number of transformation rules required in the ETL
To establish a baseline and prevent inheriting existing defects in the target system (Correct answer)

Correct answer: To establish a baseline and prevent inheriting existing defects in the target system

Pre-migration DQ checks establish a baseline of existing defects and allow remediation before those defects are replicated and potentially amplified in the new target environment.

Question 12: What is the principle of least privilege?

Removing all access until requested
Granting users only the minimum access necessary to perform their duties (Correct answer)
Restricting access only for external users
Giving all users administrator access for convenience

Correct answer: Granting users only the minimum access necessary to perform their duties

The principle of least privilege limits access to the minimum necessary for job functions, reducing the attack surface and potential impact of compromised accounts.

Question 13: Why is metadata important in data governance?

It enables data visualization.
It replaces data backups.
It hides data from users.
It enhances data understanding and traceability (Correct answer)

Correct answer: It enhances data understanding and traceability

Metadata, often described as 'data about data,' is crucial in data governance because it provides context, definitions, and lineage for data assets. It helps users understand what data means, where it originated, how it's transformed, and its quality. This enhanced understanding and traceability are vital for effective data management, analysis, and compliance.

Question 14: What should be included in every automation script?

Comments explaining every line of code
A graphical user interface
Error handling, logging, and clear documentation of purpose (Correct answer)
Only the core functionality

Correct answer: Error handling, logging, and clear documentation of purpose

Error handling, logging, and documentation ensure automation scripts are reliable, debuggable, and maintainable by current and future team members.

Question 15: How should a root cause analysis be conducted?

Only analyze problems that recur three or more times
Assign blame to the responsible party
Fix the immediate symptom and close the ticket
Systematically investigate underlying causes rather than just symptoms (Correct answer)

Correct answer: Systematically investigate underlying causes rather than just symptoms

Root cause analysis investigates underlying causes systematically, preventing recurrence rather than just addressing symptoms temporarily.

Question 16: Why is regular security training important for all staff?

It is only required annually for compliance
Employees are often the weakest link in security and training reduces human error (Correct answer)
It is only needed for IT staff
It replaces the need for technical security controls

Correct answer: Employees are often the weakest link in security and training reduces human error

Regular security training reduces human error, the most common cause of security breaches, by keeping all staff aware of current threats and proper procedures.

Question 17: A business rule states that every order must have a corresponding customer record. Which data quality dimension is violated when orphan orders exist?

Accuracy
Timeliness
Consistency
Integrity (Correct answer)

Correct answer: Integrity

Referential integrity violations — where child records exist without a valid parent — represent a failure of the Integrity dimension.

Question 18: Which scenario most clearly demonstrates metadata-driven data governance?

A DBA sets column-level permissions by reviewing each table individually
Access control policies are automatically enforced based on dataset sensitivity classification tags in the metadata (Correct answer)
A BI team manually documents all report fields in a shared spreadsheet each quarter
Data quality rules are hard-coded in ETL stored procedures

Correct answer: Access control policies are automatically enforced based on dataset sensitivity classification tags in the metadata

Metadata-driven governance uses classification and other metadata attributes to automatically trigger and enforce policies without manual intervention.

Question 19: In data sensitivity classification, what does PII stand for?

Private Information Index
Primary Identification Input
Personally Identifiable Information (Correct answer)
Protected Internal Infrastructure

Correct answer: Personally Identifiable Information

PII stands for Personally Identifiable Information, which is any data that can be used to identify a specific individual, such as name, Social Security number, or email address.

Question 20: What does 'data freshness' mean in the context of monitoring dashboards?

The rate at which new columns are added to source tables
How recently the data underlying the dashboard was updated (Correct answer)
The speed at which users can interact with report filters
The visual design modernity of the dashboard interface

Correct answer: How recently the data underlying the dashboard was updated

Data freshness measures the time elapsed since the data was last refreshed, indicating whether the dashboard reflects current reality.

Question 21: What role does a data steward play in the end-of-life stage of the data lifecycle?

Ensuring data is disposed of per retention schedules, legal holds, and disposal procedures (Correct answer)
Encrypting the data before transfer to a new owner
Designing the database schema for the replacement system
Rebuilding the dataset from raw source logs

Correct answer: Ensuring data is disposed of per retention schedules, legal holds, and disposal procedures

At end-of-life, the data steward coordinates compliant disposal including checking for legal holds, obtaining destruction certificates, and updating the asset register.

Question 22: What is the primary purpose of data classification in data stewardship?

To duplicate data across multiple backup systems
To assign sensitivity levels and categories to data assets for proper handling (Correct answer)
To organize data assets by their creation date
To delete obsolete data records on a schedule

Correct answer: To assign sensitivity levels and categories to data assets for proper handling

Data classification assigns sensitivity levels and categories to data assets so they can be protected, managed, and handled in accordance with governance policies.

Question 23: When building a business glossary, which practice BEST ensures long-term adoption across departments?

Having the IT team define all terms unilaterally and publishing them to a portal
Engaging business stakeholders to co-author definitions with formal SME review and approval (Correct answer)
Importing term definitions automatically from a third-party data dictionary vendor
Restricting editing rights to only the Chief Data Officer

Correct answer: Engaging business stakeholders to co-author definitions with formal SME review and approval

Co-authorship with subject matter experts and formal approval cycles ensures definitions reflect actual business usage and earn trust across departments.

Question 24: What is the primary goal of data governance?

To collect as much data as possible.
To ensure proper management and usage of data (Correct answer)
To store data without policies.
To outsource all data functions.

Correct answer: To ensure proper management and usage of data

The primary goal of data governance is to establish a comprehensive framework for managing data assets throughout their lifecycle. This involves defining policies, processes, and responsibilities to ensure data quality, security, usability, and integrity. It aims to optimize data's value to the organization while ensuring compliance.

Question 25: What is the primary purpose of security auditing?

To justify security spending
To create busy work for the security team
To identify vulnerabilities and verify compliance with security policies (Correct answer)
To find reasons to terminate employees

Correct answer: To identify vulnerabilities and verify compliance with security policies

Security auditing identifies vulnerabilities, verifies policy compliance, and provides evidence of due diligence in protecting organizational assets.

Question 26: What role does a Data Protection Officer (DPO) play?

Designs marketing strategies.
Manages social media campaigns.
Handles payroll.
Ensures compliance with data protection laws (Correct answer)

Correct answer: Ensures compliance with data protection laws

A Data Protection Officer (DPO) is a designated role, often mandated by regulations like GDPR, responsible for overseeing an organization's data protection strategy and ensuring compliance with data protection laws. The DPO acts as an independent advisor, monitoring internal compliance, informing and advising on data protection obligations, and serving as a contact point for supervisory authorities and data subjects.

Question 27: Which approach to data classification uses automated scanning tools that inspect content and assign categories based on predefined patterns or keywords?

Manual classification
User-driven classification
Content-based classification (Correct answer)
Policy-only classification

Correct answer: Content-based classification

Content-based classification uses automated tools to scan data content and apply category labels based on pattern matching, keywords, or regular expressions found within the data itself.

Question 28: Why is post-implementation review important?

It delays the next project
It is only required by auditors
It is optional if the implementation was successful
It identifies lessons learned and confirms objectives were met (Correct answer)

Correct answer: It identifies lessons learned and confirms objectives were met

Post-implementation reviews confirm that objectives were met, identify areas for improvement, and capture lessons learned for future projects.

Question 29: What is the 80/20 rule as applied to performance optimization?

Spend 80% of time optimizing and 20% testing
Optimize 80% of components and ignore 20%
Performance should be 80% of the project budget
80% of performance gains come from optimizing 20% of the code or configuration (Correct answer)

Correct answer: 80% of performance gains come from optimizing 20% of the code or configuration

The 80/20 rule (Pareto principle) in optimization means focusing on the critical 20% of areas that will yield 80% of performance improvements, maximizing efficiency.

Question 30: What is the difference between monitoring and observability?

Monitoring tracks known metrics while observability enables investigation of unknown issues (Correct answer)
Observability replaces the need for monitoring
They are identical concepts
Monitoring is for hardware, observability is for software

Correct answer: Monitoring tracks known metrics while observability enables investigation of unknown issues

Monitoring tracks predefined metrics, while observability provides the tooling and data to investigate unexpected or unknown issues through logs, traces, and metrics.

Question 31: What is metadata in the context of data management?

The storage format of archived data
The raw data used in reports
Information about data such as its source, format, and usage (Correct answer)
An advanced form of data encryption

Correct answer: Information about data such as its source, format, and usage

Metadata, in the context of data management, is essentially 'data about data.' It provides crucial descriptive information that helps users understand the characteristics, context, and usage of data. This includes details like data source, creation date, format, data types, relationships, and security classifications, making data more discoverable, understandable, and manageable.

Question 32: How should security incidents be handled?

Fixing the issue and not reporting it
Waiting to see if it happens again
Following an established incident response plan with documentation (Correct answer)
Blaming the affected user

Correct answer: Following an established incident response plan with documentation

Following an established incident response plan ensures consistent, effective handling while documentation supports analysis, compliance, and future prevention.

Certified Data Steward (CDS)

The Certified Data Steward (CDS) certification validates professional competency in data stewardship across 15 topic areas including data governance, data quality, metadata and master data management, architecture, automation, and regulatory compliance. Offered by eLearningCurve, it is recognized as an industry-standard credential formalizing the Data Steward role.

Questions

35 min

Time Limit

70%

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These practice questions were written with AI tools. They are not real exam questions. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

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