Certified Registered Locksmith (CRL) Exam — Questions and Answers

Question 1: When learning new tools & equipment operation in Certified Registered Locksmith, which approach is MOST effective?

Learning theory only without hands-on practice
Practicing without understanding underlying principles
Combining theoretical study with supervised practical application (Correct answer)
Observing others without ever performing the techniques

Correct answer: Combining theoretical study with supervised practical application

The combination of theoretical knowledge and supervised practical application provides the deepest understanding and develops competent practitioners.

Question 2: How can client communication & service be improved in a Certified Registered Locksmith setting?

Eliminating face-to-face interactions
Standardizing all messages without personalization
Reducing the frequency of communications
Regular feedback mechanisms and training in communication skills (Correct answer)

Correct answer: Regular feedback mechanisms and training in communication skills

Regular feedback mechanisms identify communication gaps while training develops the skills needed to address them effectively.

Question 3: A CRL recommends upgrading to a pick-resistant lock cylinder. Which feature most directly contributes to pick resistance?

Security pins such as spool or serrated pins that create false sets during picking attempts (Correct answer)
A reinforced brass cylinder housing to prevent drilling
A higher number of key cuts increasing bitting combinations
A longer keyway that requires a more complex key profile

Correct answer: Security pins such as spool or serrated pins that create false sets during picking attempts

Security pins create counter-rotational feedback when manipulated, causing false sets that make single-pin picking significantly more difficult.

Question 4: Which client communication & service technique is MOST appropriate when delivering complex information in Certified Registered Locksmith?

Breaking information into manageable segments and confirming understanding (Correct answer)
Assuming the audience will research details independently
Using only written materials without verbal explanation
Presenting all information at once to save time

Correct answer: Breaking information into manageable segments and confirming understanding

Breaking information into manageable segments and checking understanding ensures comprehension and retention of complex material.

Question 5: The levers on a heavy-duty cylindrical lock now droop and don't return to horizontal. What is the most likely cause?

Incorrect keying
Broken or weak lever return spring (Correct answer)
Overly deep strike pocket
Loose door closer arm

Correct answer: Broken or weak lever return spring

Lever sag usually means the return spring that holds the lever level has broken or worn out.

Question 6: What is the main purpose of a key blank cross-reference guide from Ilco or Silca?

Listing pin counts of padlocks
Pricing keys for customers
Identifying lock manufacturers' serial numbers
Matching a key to the correct compatible blank (Correct answer)

Correct answer: Matching a key to the correct compatible blank

Cross-reference guides show which blanks from different brands fit the same keyway.

Question 7: Which of the following is the most appropriate tool for mortising a door for lock installation?

Wood chisel
Mortising jig (Correct answer)
Screwdriver
Auger bit

Correct answer: Mortising jig

A mortising jig is the most appropriate tool for mortising a door for lock installation because it provides a precise and consistent template. This specialized tool guides a router or chisel, ensuring that the mortise (the recess for the lock body) is cut to the exact dimensions and depth required for a secure and flush fit. While a wood chisel can be used, a jig significantly improves accuracy and efficiency, especially for professional installations.

Question 8: A CRL technician discovers that a customer's existing lock has been tampered with before their arrival. What is the best course of action?

Contact the local locksmith union before doing any work
Document the damage photographically and inform the customer before proceeding (Correct answer)
Repair the lock and note nothing since it is not their responsibility
Replace all locks immediately without informing the customer to avoid alarm

Correct answer: Document the damage photographically and inform the customer before proceeding

Documenting pre-existing damage protects the technician from liability and keeps the customer informed so they can make decisions.

Question 9: Which of the following is a key element of a valid locksmith service invoice?

A generic description such as 'locksmith services rendered'
Only the total amount due with the technician's first name
Itemized list of labor, parts, and taxes with customer signature acknowledging receipt (Correct answer)
The customer's credit card number for record-keeping

Correct answer: Itemized list of labor, parts, and taxes with customer signature acknowledging receipt

An itemized invoice with customer acknowledgment provides a clear record for both parties and supports dispute resolution.

Question 10: A customer's lock works only intermittently with a heavily worn key. What is the best practice?

Duplicate the worn key exactly
Cut a new key to the original code rather than copying the worn key (Correct answer)
Lubricate the cylinder with penetrating oil
File the cylinder plug face

Correct answer: Cut a new key to the original code rather than copying the worn key

Cutting by code restores the correct factory depths, while copying a worn key keeps the wear in the new key.

Question 11: A magnetic lock's holding force has dropped noticeably. What is a common maintenance cause?

The door closer is too strong
The cylinder needs rekeying
A dirty or misaligned armature plate (Correct answer)
The power supply's voltage is too high

Correct answer: A dirty or misaligned armature plate

Dirt, rust, or misalignment between the armature and magnet faces reduces surface contact and holding force.

Question 12: In ALOA master key system notation, what does the abbreviation 'MK' designate?

The master key that operates all change key locks within its designated group (Correct answer)
The manufacturer's catalog number for a specific key blank
The minimum key count required before a system is documented
The metal kind or material specification of the key

Correct answer: The master key that operates all change key locks within its designated group

MK stands for Master Key in standard ALOA master key system notation, identifying the key that opens all change key locks within a defined group.

Question 13: Which door closer mounting places the arm parallel to the door face on the push side?

Top jamb mount
Concealed floor mount
Parallel arm mount (Correct answer)
Regular arm mount

Correct answer: Parallel arm mount

Parallel arm mounting puts the closer on the push side with the arm folded along the door, which is common on outswinging and high-abuse openings.

Question 14: What is the MOST important consideration when applying tools & equipment operation in Certified Registered Locksmith?

Relying solely on personal experience without referencing standards
Prioritizing speed over accuracy
Using the same approach for every situation regardless of context
Following established protocols while adapting to specific circumstances (Correct answer)

Correct answer: Following established protocols while adapting to specific circumstances

Following established protocols ensures consistency and safety, while adapting to specific circumstances accounts for unique variables in each situation.

Question 15: What does the transponder chip in an automotive key communicate with?

The GPS unit
The vehicle's immobilizer system (Correct answer)
The tire pressure sensors
The door lock actuator only

Correct answer: The vehicle's immobilizer system

The chip sends a coded signal that the immobilizer must recognize before the engine will start.

Question 16: In Certified Registered Locksmith, which factor MOST influences the selection of appropriate installation techniques & methods?

The most recently developed technique only
Personal preference of the practitioner
Cost as the sole determining factor
The specific requirements and constraints of the situation (Correct answer)

Correct answer: The specific requirements and constraints of the situation

The specific requirements and constraints of each situation should drive technique selection to ensure the most effective and appropriate approach.

Question 17: Which type of door hardware generally satisfies ADA operability requirements?

Small thumb-latch needing pinching
Lever handle operable with a closed fist (Correct answer)
Key-only pull handle
Round knob requiring a wrist twist

Correct answer: Lever handle operable with a closed fist

Hardware must work without tight grasping, pinching, or twisting of the wrist, which levers allow.

Question 18: Which factor is MOST important when evaluating the effectiveness of safety protocols & compliance measures in Certified Registered Locksmith?

Number of training sessions held
Total cost of safety equipment
Reduction in incident rates over time (Correct answer)
Volume of safety documentation produced

Correct answer: Reduction in incident rates over time

The most meaningful measure of safety effectiveness is whether actual incident rates decrease over time, as this reflects real-world outcomes.

Question 19: Which of the following best describes the role of the Associated Locksmiths of America (ALOA) Code of Ethics for CRL holders?

It mandates quarterly continuing education credits for all members
It guides members to act honestly, protect client privacy, and refuse illegal requests (Correct answer)
It requires all members to carry a $2 million liability bond
It sets maximum pricing tiers for locksmith services nationwide

Correct answer: It guides members to act honestly, protect client privacy, and refuse illegal requests

The ALOA Code of Ethics emphasizes honesty, confidentiality, and refusing requests that would facilitate illegal entry or fraud.

Question 20: A key blank that is aligned in the duplicator vise by the very end of its blade is called:

Bow-stop
Shoulder-stop
Tip-stop (Correct answer)
Collar-stop

Correct answer: Tip-stop

Tip-stop blanks are positioned against the end of the blade rather than the shoulder.

Question 21: A homeowner asks about protecting a door with a double-cylinder deadbolt. What safety concern must the locksmith communicate?

Double-cylinder locks are prohibited under ANSI Grade 1 standards
Double-cylinder deadbolts require a key from both sides and can prevent emergency egress during a fire (Correct answer)
They provide no additional security benefit over single-cylinder models
Double-cylinder deadbolts are only legal for commercial properties under US fire codes

Correct answer: Double-cylinder deadbolts require a key from both sides and can prevent emergency egress during a fire

Because both sides require a key, occupants can be trapped if a key is not immediately available, creating a life-safety hazard in emergencies.

Question 22: What is a 'restricted keyway' used for in key control systems?

Preventing unauthorized duplication by making the keyway proprietary (Correct answer)
Limiting the physical size of keys allowed in a lock
Limiting the number of keys that can be cut per day
Restricting access to emergency personnel only

Correct answer: Preventing unauthorized duplication by making the keyway proprietary

Restricted keyways use proprietary key profiles only available through authorized dealers, preventing customers from duplicating keys at standard hardware stores.

Question 23: What is the PRIMARY benefit of continuous improvement in materials & resource management for Certified Registered Locksmith?

Enhanced efficiency, quality, and competitive advantage over time (Correct answer)
Higher operational costs in the short term
Reduced need for employee input
Increased complexity in operations

Correct answer: Enhanced efficiency, quality, and competitive advantage over time

Continuous improvement systematically enhances efficiency and quality, leading to sustained competitive advantage.

Question 24: Multi-factor authentication at a door would most likely combine which pair?

PIN and card (Correct answer)
Card and a second card
Two fingerprints from the same hand
Two different PINs

Correct answer: PIN and card

A PIN (something you know) plus a card (something you have) uses two different factors.

Question 25: Which metric BEST indicates successful materials & resource management in Certified Registered Locksmith?

Achievement of defined key performance indicators and stakeholder satisfaction (Correct answer)
Volume of emails sent
Number of meetings held per week
Hours worked by team members

Correct answer: Achievement of defined key performance indicators and stakeholder satisfaction

KPI achievement and stakeholder satisfaction directly measure whether management activities are producing desired outcomes.

Question 26: What is the standard practice for disposing of key-cutting shavings and lock cylinder cores in a way that upholds customer security?

Leave shavings at the job site since they are the customer's property
Keep old cores in the service vehicle as spare parts
Donate old cores to trade school programs without wiping codes
Collect and discard all metal shavings and old cores securely so key bitting codes cannot be reconstructed (Correct answer)

Correct answer: Collect and discard all metal shavings and old cores securely so key bitting codes cannot be reconstructed

Secure disposal of shavings and old cores prevents unauthorized duplication of key profiles, protecting the customer's security.

Question 27: Under what circumstances is it ethical for a CRL to refuse a service request?

When the request appears intended to facilitate unauthorized access or illegal activity (Correct answer)
When the customer cannot pay in cash
When the lock brand is unfamiliar to the technician
When the job is located more than 20 miles away from the shop

Correct answer: When the request appears intended to facilitate unauthorized access or illegal activity

The ALOA Code of Ethics obligates members to refuse work that could aid criminal activity, regardless of customer claims.

Question 28: In master key system design, what does 'total positions' (TP) refer to?

The maximum number of pins that can be installed in a cylinder
The number of possible bitting depth variations available per pin position (Correct answer)
The total number of keys authorized to be issued in the system
The total number of physical locks installed in the system

Correct answer: The number of possible bitting depth variations available per pin position

Total positions refers to the number of available bitting depth increments per pin chamber, which directly determines how many unique key combinations can exist in the system.

Question 29: Medeco keys are considered high security partly because their cuts:

Require no keyway
Are made with a laser only
Are all the same depth
Use angled cuts that rotate the pins to align a sidebar (Correct answer)

Correct answer: Use angled cuts that rotate the pins to align a sidebar

Medeco pins must be both lifted and rotated by angled cuts to align the sidebar.

Question 30: What term describes a key that operates all locks within a specific group or section of a master key system?

Change key
Control key
Master key (Correct answer)
Grand master key

Correct answer: Master key

A master key is designed to operate all locks within a specific group or section, sitting one level above change keys in the hierarchy.

Question 31: If a copy cut from a worn original does not operate smoothly, the best remedy is to:

Recut from the lock's code or a less worn key (Correct answer)
File the cuts deeper
Add lubricant to the blade
Replace the cylinder immediately

Correct answer: Recut from the lock's code or a less worn key

Copies of worn keys inherit and compound the wear, so cutting from code or a better key is more accurate.

Question 32: What is the first step in duplicating a key?

Lubricate the lock
Select key blank
Polish key cuts
Align key in machine (Correct answer)

Correct answer: Align key in machine

The first step in duplicating a key is to properly align both the original key and the blank key in the key duplicating machine. Correct alignment ensures that the cutting wheel accurately traces the bitting of the original key onto the blank, resulting in a precise copy. Improper alignment will lead to an incorrectly cut and non-functional duplicate.

Question 33: Which element is CRITICAL for maintaining proficiency in tools & equipment operation within Certified Registered Locksmith?

Performing techniques only when absolutely necessary
Initial certification alone without continuing education
Regular practice with ongoing professional development and skill updates (Correct answer)
Learning from informal sources without verification

Correct answer: Regular practice with ongoing professional development and skill updates

Maintaining proficiency requires regular practice combined with ongoing professional development to stay current with evolving best practices.

Question 34: A locksmith is approached to make keys for a vehicle the customer claims to own but cannot provide proof of ownership. What should the locksmith do?

Complete the job since the locksmith is not responsible for verifying ownership
Refer the customer to the vehicle manufacturer
Ask the customer to sign a waiver and proceed without ID
Require government-issued ID, proof of ownership, and document the transaction before proceeding (Correct answer)

Correct answer: Require government-issued ID, proof of ownership, and document the transaction before proceeding

Requiring ID and ownership documentation protects the locksmith from facilitating theft and is an industry-standard best practice.

Question 35: Which of the following is used to identify the manufacturer of a key blank?

Bitting pattern
Head shape
Length of key blade
Manufacturer code (Correct answer)

Correct answer: Manufacturer code

The manufacturer code is used to identify the maker of a key blank. This code, often stamped on the key bow or head, helps locksmiths determine the correct blank to use when duplicating a key or originating a new one. It ensures compatibility with the specific lock's keyway and internal mechanism.

Question 36: When a new customer calls to verify a locksmith's credentials, what is the most professional response?

Provide license number, ALOA membership, and offer to show credentials upon arrival (Correct answer)
Direct them to the company's social media page only
Tell them credentials will be verified after payment
Decline to share personal information for security reasons

Correct answer: Provide license number, ALOA membership, and offer to show credentials upon arrival

Legitimate locksmiths willingly share verifiable credentials to build customer trust before and upon arrival.

Question 37: What does E&O (Errors and Omissions) insurance protect a locksmith business against?

Workers' compensation claims from injured employees
Theft of tools from the job site by third parties
Claims arising from mistakes or failures to perform professional services correctly (Correct answer)
Physical damage to the technician's vehicle during service calls

Correct answer: Claims arising from mistakes or failures to perform professional services correctly

E&O insurance covers financial losses a client suffers due to the locksmith's professional errors or oversights.

Question 38: How can a locksmith remove a plug for rekeying without a follower or removing the cylinder retainer first?

Shim the plug by sliding shim stock between the plug and shell at the shear line (Correct answer)
Bump the plug out with a hammer
Rake the cylinder open
Drill the shear line

Correct answer: Shim the plug by sliding shim stock between the plug and shell at the shear line

Thin shim stock wrapped around the plug at the shear line holds the top pins in the shell while the plug is pulled out.

Question 39: Which of the following is a common component of an electronic access control system?

Magnetic stripe reader (Correct answer)
Strike plate
Mechanical deadbolt
Tumbler pins

Correct answer: Magnetic stripe reader

A magnetic stripe reader is a common component of an electronic access control system. These readers are used to scan cards with magnetic stripes, which contain encoded access credentials. When a valid card is swiped, the reader communicates with the access control panel to grant or deny entry, making it a fundamental part of many electronic security setups.

Question 40: When a locksmith specifies locks are 'keyed to differ' (KD), what does this mean?

Each lock is assigned a different security rating based on its location
Each lock has a unique bitting so no two locks in the system share the same key (Correct answer)
Each lock uses a key from a different manufacturer's product line
The locks differ in physical appearance but are all operated by the same master key

Correct answer: Each lock has a unique bitting so no two locks in the system share the same key

'Keyed to differ' means every lock in the system has a unique bitting, so no single change key can operate more than one lock, providing maximum security separation.

Question 41: When learning new installation techniques & methods in Certified Registered Locksmith, which approach is MOST effective?

Practicing without understanding underlying principles
Combining theoretical study with supervised practical application (Correct answer)
Learning theory only without hands-on practice
Observing others without ever performing the techniques

Correct answer: Combining theoretical study with supervised practical application

The combination of theoretical knowledge and supervised practical application provides the deepest understanding and develops competent practitioners.

Question 42: What does ANSI/BHMA Grade 1 represent in lock classification?

Temporary hardware
Commercial grade (low durability)
Highest security and durability (Correct answer)
Light residential use

Correct answer: Highest security and durability

ANSI/BHMA (American National Standards Institute/Builders Hardware Manufacturers Association) grades classify door hardware based on operational cycles, strength, and security. Grade 1 represents the highest level of performance, indicating superior durability, strength, and security suitable for heavy-duty commercial and institutional applications. It signifies that the lock has passed the most stringent tests for cycles, impact, and force.

Question 43: Which barrier MOST commonly hinders effective client communication & service in Certified Registered Locksmith?

Lack of active listening and assumptions about understanding (Correct answer)
Providing too much context for messages
Over-communicating important information
Using too many communication channels

Correct answer: Lack of active listening and assumptions about understanding

Failure to actively listen and making assumptions about understanding are the most common barriers to effective communication.

Question 44: In electronic access systems, what does 'fail-secure' mean?

Lock disengages during fire alarms
Lock is permanently open
Door remains unlocked during power failure
Door stays locked during power failure (Correct answer)

Correct answer: Door stays locked during power failure

In electronic access systems, 'fail-secure' means that the door stays locked during a power failure. This design prioritizes security, ensuring that an unauthorized person cannot gain access if the system loses power. Conversely, 'fail-safe' systems unlock during a power failure, prioritizing safety and egress in emergencies.

Question 45: What is an end-of-line (EOL) resistor used for in an alarm zone?

Supervising the loop to detect shorts and opens (Correct answer)
Boosting siren volume
Setting the entry delay
Charging the battery

Correct answer: Supervising the loop to detect shorts and opens

EOL resistors let the panel tell normal, alarm, open and short conditions apart.

Question 46: What does the term 'layered security' mean in the context of a physical security assessment?

Layering adhesive security film over glass panels
Installing multiple locks of the same type on a single door
Adding decorative security features over existing hardware
Using multiple independent security measures so that defeating one layer does not grant full access (Correct answer)

Correct answer: Using multiple independent security measures so that defeating one layer does not grant full access

Layered security ensures that an attacker must overcome several distinct barriers — lighting, alarms, reinforced frames, and high-security locks — rather than a single obstacle.

Question 47: How should unexpected results during installation techniques & methods be handled in Certified Registered Locksmith?

Document the findings, analyze potential causes, and consult protocols (Correct answer)
Repeat the procedure until desired results are achieved
Attribute unexpected results to equipment error automatically
Ignore results that do not match expectations

Correct answer: Document the findings, analyze potential causes, and consult protocols

Documenting unexpected findings, analyzing causes, and consulting established protocols ensures proper investigation and appropriate response.

Question 48: For a locksmith installing a keypad lock, which practice best protects against an installer-default code being exploited?

Changing the default master/programming code at installation (Correct answer)
Disabling the keypad lockout
Leaving the factory master code unchanged
Writing the code on the door frame

Correct answer: Changing the default master/programming code at installation

Factory default codes are publicly documented, so they must be changed at install.

Question 49: What is the purpose of carrying a current ALOA membership card and CRL credential card on service calls?

To receive discounts at hardware supply stores
To qualify for lower commercial vehicle insurance rates
To bypass local licensing requirements in states with reciprocity agreements
To provide verifiable proof of professional training and ethical standing to customers and law enforcement (Correct answer)

Correct answer: To provide verifiable proof of professional training and ethical standing to customers and law enforcement

Credential cards confirm to customers and authorities that the technician has met ALOA's training and ethical standards.

Question 50: A CRL sets up a key duplication table at a community fair. What legal and ethical obligation must be met?

Display business license and follow all local regulations governing mobile locksmith operations (Correct answer)
Only duplicate keys for customers who show no ID to speed up lines
Offer free key duplication to circumvent competitors
Operate without permits since the event is temporary and charitable

Correct answer: Display business license and follow all local regulations governing mobile locksmith operations

Even at temporary events, locksmiths must comply with local licensing laws and display required credentials.

Question 51: During a security walkthrough, a CRL notes that a commercial tenant uses a key-in-knob lock as the sole entry point locking device. What upgrade should be recommended?

Replace the knob with a lever handle for ADA compliance
Add an ANSI Grade 1 deadbolt because knob locks have weak latch bolts susceptible to shimming and wrenching attacks (Correct answer)
Add a chain lock on the interior as a supplemental security device
Install a surface-mounted rim lock instead of a deadbolt

Correct answer: Add an ANSI Grade 1 deadbolt because knob locks have weak latch bolts susceptible to shimming and wrenching attacks

Knob locks are easily defeated by wrench force or shimming the spring latch; a Grade 1 deadbolt provides a solid bolt that resists these attacks.

Question 52: Which ANSI/BHMA grade designation indicates the highest level of security and durability for commercial door hardware?

Grade 4
Grade 2
Grade 1 (Correct answer)
Grade 3

Correct answer: Grade 1

ANSI/BHMA Grade 1 hardware has passed the most rigorous cycle and force testing, making it the standard for high-security commercial applications.

Question 53: What is the primary function of a security survey report delivered to a customer after a CRL's assessment?

To provide a marketing document for the locksmith's other services
To fulfill an ALOA requirement for annual recertification
To serve as a legal warranty against future break-ins
To document identified vulnerabilities, prioritized recommendations, and estimated costs so the customer can make informed decisions (Correct answer)

Correct answer: To document identified vulnerabilities, prioritized recommendations, and estimated costs so the customer can make informed decisions

A security survey report gives the customer a prioritized action plan with cost context so they can address vulnerabilities based on risk and budget.

Question 54: In Certified Registered Locksmith, how should materials & resource management challenges be prioritized?

In the order they were identified
Based solely on cost considerations
By the preferences of senior management
Based on potential impact, urgency, and alignment with strategic objectives (Correct answer)

Correct answer: Based on potential impact, urgency, and alignment with strategic objectives

Prioritizing based on impact, urgency, and strategic alignment ensures resources are directed where they will produce the greatest benefit.

Question 55: What is the purpose of a cylinder retaining clip?

Secure the cylinder in place (Correct answer)
Seal the keyway
Prevent cylinder rotation
Connect cylinder to bolt

Correct answer: Secure the cylinder in place

The purpose of a cylinder retaining clip, often called a C-clip or spring clip, is to secure the lock cylinder firmly within the lock body or door. This clip fits into a groove on the cylinder and against the lock mechanism, preventing the cylinder from being pulled out or pushed through the door. It ensures the cylinder remains stable and functional during operation.

Question 56: Which security feature records entries and exits in an electronic access system?

Strike sensor
Audit trail (Correct answer)
Door closer
Tamper switch

Correct answer: Audit trail

An audit trail is a crucial security feature in electronic access systems that records entries and exits. It logs details such as who accessed a door, when they did so, and whether access was granted or denied. This data is invaluable for security monitoring, investigating incidents, and maintaining accountability within a controlled environment.

Question 57: What is the primary purpose of a secure 'key cabinet' in a key control system?

Securely housing issued keys and tracking their chain of custody (Correct answer)
Storing key blanks organized by manufacturer
Displaying keys for customer selection at the counter
Protecting keys from weather and corrosion during storage

Correct answer: Securely housing issued keys and tracking their chain of custody

A key cabinet provides secure, organized storage for keys while tracking their availability and chain of custody, ensuring accountability within an organization.

Question 58: A key stamped 'Do Not Duplicate' should be handled by a professional locksmith by:

Removing the stamp and copying
Refusing all key work for that customer
Copying it freely because the stamp has no force
Verifying authorization before copying (Correct answer)

Correct answer: Verifying authorization before copying

The stamp is not a lock, but ethical practice requires confirming the customer is authorized to have copies.

Question 59: A latch bolt hits the bottom lip of the strike plate on a door that used to close correctly. What is the most likely cause and fix?

Door has sagged; tighten the top hinge with long screws into the jamb stud (Correct answer)
Frame has swollen; plane the hinge edge
Strike is too deep; shim behind the strike
Worn latch spring; replace the lockset

Correct answer: Door has sagged; tighten the top hinge with long screws into the jamb stud

A sagging door drops the latch below the strike opening, and long screws into the framing in the top hinge pull it back up.

Question 60: What is the PRIMARY benefit of documenting installation techniques & methods in Certified Registered Locksmith?

Protecting against client complaints only
Meeting minimum paperwork requirements
Creating a reference for quality assurance, training, and continuous improvement (Correct answer)
Reducing the workload for future practitioners

Correct answer: Creating a reference for quality assurance, training, and continuous improvement

Documentation serves multiple purposes including quality assurance, training resources, and a foundation for continuous improvement.

Question 61: A locksmith receives a subcontract from a property management company. Who bears primary responsibility for verifying the legitimacy of the entry request?

The local police department dispatched to the scene
The property management company as the contracting party, with the locksmith maintaining their own due diligence (Correct answer)
The tenant, since they occupy the property
The locksmith bears no responsibility as a subcontractor

Correct answer: The property management company as the contracting party, with the locksmith maintaining their own due diligence

While the contracting company holds primary responsibility, the locksmith must still independently assess the legality of the work request.

Question 62: A deadbolt doesn't fully extend when the door is closed, but it throws completely with the door open. What is the most likely fix?

Add a door closer
Shorten the bolt
Deepen or realign the strike pocket so the bolt can fully throw (Correct answer)
Replace the cylinder

Correct answer: Deepen or realign the strike pocket so the bolt can fully throw

A shallow or misaligned strike pocket stops the bolt from reaching full throw and deadlocking.

Question 63: Which tool is used to measure the depth of existing cuts on a key?

Plug follower
Depth gauge or key caliper (Correct answer)
Tension wrench
Feeler gauge only

Correct answer: Depth gauge or key caliper

A depth gauge or caliper measures cut depths so they can be matched to the manufacturer's depth chart.

Question 64: In Certified Registered Locksmith, what is the PRIMARY purpose of conducting regular safety protocols & compliance assessments?

To increase employee workload
To satisfy insurance requirements only
To identify potential hazards before incidents occur (Correct answer)
To reduce operational costs

Correct answer: To identify potential hazards before incidents occur

Regular safety assessments are primarily conducted to proactively identify and mitigate potential hazards before they lead to incidents or injuries.

Question 65: When installing a deadbolt, what should be checked to ensure smooth operation?

Strike plate alignment (Correct answer)
Color of the bolt
Door paint finish
Doorknob tension

Correct answer: Strike plate alignment

When installing a deadbolt, checking the strike plate alignment is critical to ensure smooth and proper operation. The strike plate is the metal plate installed on the door frame that the deadbolt extends into. If it's misaligned, the bolt may bind, not fully extend, or fail to engage securely, compromising the lock's function and security.

Question 66: Locks on exit doors must allow:

Operation only with a remote release
Keyed operation from both sides
Fingerprint verification
Free egress from inside (Correct answer)

Correct answer: Free egress from inside

Building codes, particularly life safety codes like NFPA 101, mandate that exit doors must always allow free and immediate egress from the inside without the need for a key, special knowledge, or excessive effort. This requirement is paramount for occupant safety, ensuring that people can quickly and easily exit a building during an emergency, such as a fire.

Question 67: After changing the combination on a safe lock, what should the locksmith do before closing the door?

Change the change key
Reset the lock to its factory combination
Test the new combination several times with the door open (Correct answer)
Lubricate the wheel pack

Correct answer: Test the new combination several times with the door open

Testing several times with the door open confirms the new combination works and avoids a costly lockout.

Question 68: Why might a code officer object to a double-cylinder deadbolt in a residence?

It requires a key to exit, impeding fire egress (Correct answer)
It voids the lock warranty
It is too weak
It is too loud

Correct answer: It requires a key to exit, impeding fire egress

Keyed-both-sides locks can trap occupants during emergencies, so many codes restrict them.

Question 69: What is the purpose of the backcheck function on a door closer?

Increase closing force in windy conditions
Delay the start of closing for accessibility
Hold the door open at a set angle
Cushion the door's opening swing before it reaches the stop (Correct answer)

Correct answer: Cushion the door's opening swing before it reaches the stop

Backcheck provides hydraulic resistance near the end of the opening swing to protect the door, frame, and wall.

Question 70: In Certified Registered Locksmith, which project estimation & planning approach is MOST effective for achieving long-term goals?

Delegating all decisions without oversight
Reactive management that addresses issues as they arise
Focusing solely on short-term financial targets
Strategic planning with measurable objectives and regular progress reviews (Correct answer)

Correct answer: Strategic planning with measurable objectives and regular progress reviews

Strategic planning with measurable objectives and regular reviews provides direction, accountability, and the ability to adapt strategies based on progress.

Question 71: Which door closer adjustment controls the final few degrees of closing?

Backcheck
Latch speed valve (Correct answer)
Hold-open arm
Spring tension nut

Correct answer: Latch speed valve

The latch speed valve governs the final closing arc so the latch engages.

Question 72: Why should a duplicate key be tested in the lock after cutting?

Clean the machine
Sharpen the original key
Check the color match
Verify smooth operation (Correct answer)

Correct answer: Verify smooth operation

After cutting a duplicate key, it is crucial to test it in the lock to verify smooth operation. This step ensures that the cuts are accurate and that the key can be inserted, turned, and removed without binding or sticking. Testing confirms the key functions correctly and prevents issues for the user.

Question 73: What is the recommended FIRST step when a safety concern is identified in a Certified Registered Locksmith setting?

Ignore it if no one has been injured
Wait for the next scheduled inspection
Document the concern and notify the appropriate supervisor (Correct answer)
Address it only if required by regulation

Correct answer: Document the concern and notify the appropriate supervisor

Immediately documenting the concern and notifying the supervisor ensures timely action and creates an official record for tracking and resolution.

Question 74: A customer's key works poorly after being copied several times; what is the best fix?

File the new key
Replace the strike
Spray more lubricant
Cut a new key by code or from the original key (Correct answer)

Correct answer: Cut a new key by code or from the original key

Copies of copies compound cutting errors, so cutting from the original or code restores accuracy.

Question 75: Before modifying or adding hardware to a labeled fire door, a locksmith should:

Confirm the work stays within the door label's allowable preparations and uses listed hardware (Correct answer)
Remove the label for access
Paint over the label
Drill any size hole needed

Correct answer: Confirm the work stays within the door label's allowable preparations and uses listed hardware

Unapproved cutting or non-listed hardware can void the fire rating.

Question 76: A CRL applicant must demonstrate competency in which broad area to meet ALOA certification requirements?

Advanced electronic access control networking and IP configuration
Knowledge of lock mechanisms, key systems, security hardware, and professional business practices (Correct answer)
Exclusively automotive key programming and transponder technology
Only residential deadbolt installation per ANSI Grade 1 standards

Correct answer: Knowledge of lock mechanisms, key systems, security hardware, and professional business practices

The CRL certification evaluates a broad foundation that includes mechanical lock knowledge, key systems, hardware, and business professionalism.

Question 77: In Certified Registered Locksmith, which factor MOST influences the selection of appropriate tools & equipment operation?

Cost as the sole determining factor
The specific requirements and constraints of the situation (Correct answer)
Personal preference of the practitioner
The most recently developed technique only

Correct answer: The specific requirements and constraints of the situation

The specific requirements and constraints of each situation should drive technique selection to ensure the most effective and appropriate approach.

Question 78: What does an electric strike designated fail-secure do on power loss?

Remains locked (Correct answer)
Unlocks
Releases the latch for exit only after delay
Sounds an alarm only

Correct answer: Remains locked

Fail-secure strikes need power to unlock, so they stay locked when power fails.

Question 79: What is the PRIMARY benefit of documenting tools & equipment operation in Certified Registered Locksmith?

Reducing the workload for future practitioners
Creating a reference for quality assurance, training, and continuous improvement (Correct answer)
Meeting minimum paperwork requirements
Protecting against client complaints only

Correct answer: Creating a reference for quality assurance, training, and continuous improvement

Documentation serves multiple purposes including quality assurance, training resources, and a foundation for continuous improvement.

Question 80: When assessing a safe for a small business, which characteristic most directly indicates that it provides burglary resistance rather than just fire protection?

A fire rating of 2 hours or more
A heavy total weight exceeding 200 pounds
A UL Residential Security Container (RSC) or TL-rated label indicating it has passed anti-attack testing (Correct answer)
A digital keypad instead of a combination dial

Correct answer: A UL Residential Security Container (RSC) or TL-rated label indicating it has passed anti-attack testing

Fire safes are designed to protect contents from heat but are not attack-resistant; only safes with UL RSC or TL ratings have been tested against burglary methods.

Question 81: Which of the following is NOT typically covered in lock compliance codes?

Fire resistance
Manufacturer branding (Correct answer)
Accessibility standards
Egress requirements

Correct answer: Manufacturer branding

Lock compliance codes, such as those from NFPA, ICC, and ANSI/BHMA, focus on the functional and safety performance of locks and door hardware. They cover critical aspects like egress requirements, fire resistance ratings, and accessibility standards (ADA). Manufacturer branding, while important for marketing, is not a factor regulated by these performance-based compliance codes.

Question 82: A 'delayed egress' lock, where permitted by code, typically does what?

Releases only after a card swipe
Releases after a short delay (commonly 15 seconds) following a sounding alarm (Correct answer)
Prevents exit permanently
Requires a key from inside

Correct answer: Releases after a short delay (commonly 15 seconds) following a sounding alarm

Delayed egress devices hold the door briefly with an alarm, then release; the delay is usually up to 15 seconds in many jurisdictions.

Question 83: In Certified Registered Locksmith, what role does employee training play in safety protocols & compliance?

It ensures all personnel can recognize, report, and respond to hazards (Correct answer)
It is only needed after an incident occurs
It is optional and only for new employees
It primarily serves as a legal formality

Correct answer: It ensures all personnel can recognize, report, and respond to hazards

Training empowers all personnel to recognize hazards, follow proper procedures, and respond effectively, making it a cornerstone of any safety program.

Question 84: What is the primary purpose of a request-to-exit (REX) device on an access-controlled door?

To add a second credential for entry
To record the credential holder's name
To let a person leave without triggering a forced-door alarm (Correct answer)
To reset the controller after a power failure

Correct answer: To let a person leave without triggering a forced-door alarm

A REX shunts the door-position alarm and releases the lock when someone exits legitimately.

Question 85: What is the maximum height of a door threshold on an accessible route if beveled?

3/4 inch
1/2 inch (Correct answer)
1/4 inch
1 inch

Correct answer: 1/2 inch

Thresholds may be up to 1/2 inch high, with changes over 1/4 inch beveled.

Question 86: Under NFPA 80, how often must swinging fire door assemblies be inspected and tested?

Only after a fire event
Every five years
Every two years
At least annually (Correct answer)

Correct answer: At least annually

NFPA 80 requires fire door assemblies to be inspected and tested at least once a year.

Question 87: How should unexpected results during maintenance & repair procedures be handled in Certified Registered Locksmith?

Ignore results that do not match expectations
Repeat the procedure until desired results are achieved
Document the findings, analyze potential causes, and consult protocols (Correct answer)
Attribute unexpected results to equipment error automatically

Correct answer: Document the findings, analyze potential causes, and consult protocols

Documenting unexpected findings, analyzing causes, and consulting established protocols ensures proper investigation and appropriate response.

Question 88: What is the MOST important consideration when applying installation techniques & methods in Certified Registered Locksmith?

Prioritizing speed over accuracy
Using the same approach for every situation regardless of context
Following established protocols while adapting to specific circumstances (Correct answer)
Relying solely on personal experience without referencing standards

Correct answer: Following established protocols while adapting to specific circumstances

Following established protocols ensures consistency and safety, while adapting to specific circumstances accounts for unique variables in each situation.

Question 89: In a master key system, what is the function of a 'change key'?

It overrides all other keys in the system
It opens every lock in the system
It is used to re-key all locks simultaneously
It opens only one specific lock within the system (Correct answer)

Correct answer: It opens only one specific lock within the system

A change key (also called a servant key) is cut to operate only one specific lock within a master key system.

Question 90: In Certified Registered Locksmith, what is the MOST effective approach to client communication & service?

Using technical terminology exclusively
Providing information without seeking feedback
Active listening combined with clear, empathetic communication (Correct answer)
Communicating only in writing to avoid misunderstandings

Correct answer: Active listening combined with clear, empathetic communication

Active listening combined with clear, empathetic communication builds trust and ensures mutual understanding between all parties.

Question 91: In a master-keyed pin tumbler chamber, which pin sits between the bottom pin and the top pin?

Spool pin
Driver pin
Master pin (Correct answer)
Control pin

Correct answer: Master pin

A master pin (build-up wafer) creates a second shear line so both the change key and master key can operate the cylinder.

Question 92: What is the MOST important skill for effective materials & resource management in Certified Registered Locksmith?

Technical expertise alone without people skills
Clear communication and the ability to align team efforts with objectives (Correct answer)
Maintaining strict authority over all decisions
Avoiding conflict at all costs

Correct answer: Clear communication and the ability to align team efforts with objectives

Clear communication is essential for aligning team efforts, building consensus, and ensuring everyone understands and works toward shared objectives.

Question 93: During a security assessment, a locksmith identifies that exterior hinges are exposed and unprotected on an inward-opening door. What is the correct recommendation?

Add a deadbolt on the hinge side of the door
Replace the entire door and frame with a steel unit
Install hinge bolts or non-removable pin hinges to prevent hinge removal attacks (Correct answer)
Relocate the door to swing outward to make hinges inaccessible from outside

Correct answer: Install hinge bolts or non-removable pin hinges to prevent hinge removal attacks

Exposed hinge pins on inward-opening doors can be driven out to remove the door; hinge bolts or security hinges neutralize this attack vector.

Question 94: ADA-related hardware requirements for accessible doors generally call for operable parts that:

Require two hands
Can be operated with one hand without tight grasping, pinching or twisting (Correct answer)
Require tight grasping and twisting
Are mounted above 60 inches

Correct answer: Can be operated with one hand without tight grasping, pinching or twisting

ADA standards require hardware operable with one hand and without tight grasping, pinching or twisting of the wrist.

Question 95: Which door closer adjustment controls door speed during the last few inches before the door latches?

Sweep speed valve
Latch speed valve (Correct answer)
Backcheck valve
Spring power adjustment

Correct answer: Latch speed valve

The latch valve controls the final closing segment so the door latches without slamming.

Question 96: Which component prevents a lock cylinder from being turned without a key?

Strike plate
Cam lock
Pin tumblers (Correct answer)
Retainer clip

Correct answer: Pin tumblers

Pin tumblers are the crucial components within a lock cylinder that prevent it from being turned without the correct key. These small pins, arranged in sets of driver pins and key pins, must be precisely aligned by the bitting of the correct key to create a shear line. When aligned, the cylinder can rotate, allowing the lock to open; otherwise, the pins block rotation.

Question 97: Why are double-cylinder deadbolts generally problematic on egress doors in commercial occupancies?

They require a key to exit (Correct answer)
They cannot be rekeyed
They wear out faster
They cannot be master keyed

Correct answer: They require a key to exit

Needing a key to exit violates egress requirements and traps occupants in an emergency.

Question 98: Which quality control & inspection tool is MOST valuable for identifying root causes in Certified Registered Locksmith?

Quick fixes based on symptoms
Root cause analysis with systematic investigation methods (Correct answer)
Historical trend analysis alone
Blame assignment without investigation

Correct answer: Root cause analysis with systematic investigation methods

Root cause analysis with systematic methods identifies underlying causes rather than symptoms, leading to lasting solutions.

Question 99: Which tool is best for removing a broken key from a lock cylinder?

Screw extractor
Needle nose pliers
Key extractor (Correct answer)
Lock pick

Correct answer: Key extractor

A key extractor is a specialized tool designed specifically for removing broken keys from a lock cylinder. It typically features thin, barbed, or hooked ends that can be inserted into the keyway alongside the broken key fragment. These hooks can then grip the key, allowing it to be carefully pulled out without damaging the lock mechanism.

Question 100: On a surface vertical rod exit device, the top latch doesn't engage the top strike. What is the usual adjustment?

Adjust the top rod length or latch position (Correct answer)
Replace the closer
Install a longer bottom rod
Rekey the trim cylinder

Correct answer: Adjust the top rod length or latch position

Vertical rod latches are tuned by adjusting rod length so the top latch projects and catches its strike correctly.

Certified Registered Locksmith (CRL) Exam

The CRL certification validates foundational knowledge and skills required for entry-level locksmiths, covering basic security principles and hardware.

100

Questions

120 min

Time Limit

70%

To Pass

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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

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

aloa.org — Score release, test delivery, eligibility, exam format, test dates, exam information · verified Nov 2026
aloamembers.org — Fees, retake fee, retake policy · verified Oct 2026