Florida Locksmith Contractor Exam 2026
— 100 Practice Questions & Answers
with Detailed Rationales | Complete
Licensing Exam Prep, Test Preparation
& Study Guide
1. What is the primary function of a lock cylinder?
A. To reinforce the door frame
B. To control the locking mechanism through a key or credential
C. To prevent the door from sagging
D. To insulate the door
Answer: To control the locking mechanism through a key or credential
Rationale: The cylinder contains the operating mechanism that recognizes the
correct key or credential and allows the lock to be operated.
2. In a conventional pin-tumbler cylinder, what must occur for the plug to
rotate?
A. The springs must be removed
B. The pins must align at the shear line
C. The latch must be extended
D. The strike must be removed
Answer: The pins must align at the shear line
,Rationale: The correct key positions the driver and key pins so their interface
aligns with the shear line, allowing the plug to rotate.
3. Which component normally retracts a latch when a lever or knob is turned?
A. Strike plate
B. Spindle
C. Door stop
D. Hinge leaf
Answer: Spindle
Rationale: The spindle transfers rotational movement from the knob or lever to
the lock mechanism.
4. What is the purpose of a strike plate?
A. To hold the cylinder springs
B. To receive the latch or bolt in the frame
C. To support the door hinges
D. To control key duplication
Answer: To receive the latch or bolt in the frame
Rationale: The strike is mounted to the door frame and provides the opening
into which the latch or bolt enters.
5. Which lock type uses a series of pins that must be correctly positioned by the
key?
A. Pin-tumbler lock
B. Disc detainer lock
C. Magnetic lock
D. Rim latch
Answer: Pin-tumbler lock
,Rationale: Traditional pin-tumbler cylinders use key pins and driver pins that
must align at the shear line.
6. What is a master key system designed to accomplish?
A. Make every key identical
B. Allow selected keys to operate multiple locks while maintaining individual key
operation
C. Eliminate the need for cylinders
D. Prevent all unauthorized key duplication
Answer: Allow selected keys to operate multiple locks while maintaining
individual key operation
Rationale: A master key system establishes controlled levels of access while
individual change keys operate specific locks.
7. What is the purpose of a restricted keyway?
A. To make a door heavier
B. To limit unauthorized key duplication and control key distribution
C. To eliminate the cylinder
D. To make the lock waterproof
Answer: To limit unauthorized key duplication and control key distribution
Rationale: Restricted key systems are designed to provide greater control over
who can obtain duplicate keys.
8. What does “keyed alike” generally mean?
A. All keys have different cuts
B. One key operates several locks
C. Every lock has a different master key
D. Keys are made without cuts
Answer: One key operates several locks
, Rationale: Locks that are keyed alike are configured so the same operating key
can operate each lock.
9. What does “keyed differently” mean?
A. Each lock is operated by its own individual key
B. All locks use one master key only
C. No keys are required
D. All cylinders are identical internally
Answer: Each lock is operated by its own individual key
Rationale: Keyed-different cylinders are configured with different key
combinations.
10. Which measurement is especially important when replacing a cylindrical
lock?
A. Ceiling height
B. Backset
C. Roof pitch
D. Window width
Answer: Backset
Rationale: Backset is the distance from the edge of the door to the centerline of
the lock or bore and must match the replacement hardware.
11. A common residential latch backset is approximately:
A. 1 inch
B. 2⅜ inches
C. 6 inches
D. 12 inches
Answer: 2⅜ inches
— 100 Practice Questions & Answers
with Detailed Rationales | Complete
Licensing Exam Prep, Test Preparation
& Study Guide
1. What is the primary function of a lock cylinder?
A. To reinforce the door frame
B. To control the locking mechanism through a key or credential
C. To prevent the door from sagging
D. To insulate the door
Answer: To control the locking mechanism through a key or credential
Rationale: The cylinder contains the operating mechanism that recognizes the
correct key or credential and allows the lock to be operated.
2. In a conventional pin-tumbler cylinder, what must occur for the plug to
rotate?
A. The springs must be removed
B. The pins must align at the shear line
C. The latch must be extended
D. The strike must be removed
Answer: The pins must align at the shear line
,Rationale: The correct key positions the driver and key pins so their interface
aligns with the shear line, allowing the plug to rotate.
3. Which component normally retracts a latch when a lever or knob is turned?
A. Strike plate
B. Spindle
C. Door stop
D. Hinge leaf
Answer: Spindle
Rationale: The spindle transfers rotational movement from the knob or lever to
the lock mechanism.
4. What is the purpose of a strike plate?
A. To hold the cylinder springs
B. To receive the latch or bolt in the frame
C. To support the door hinges
D. To control key duplication
Answer: To receive the latch or bolt in the frame
Rationale: The strike is mounted to the door frame and provides the opening
into which the latch or bolt enters.
5. Which lock type uses a series of pins that must be correctly positioned by the
key?
A. Pin-tumbler lock
B. Disc detainer lock
C. Magnetic lock
D. Rim latch
Answer: Pin-tumbler lock
,Rationale: Traditional pin-tumbler cylinders use key pins and driver pins that
must align at the shear line.
6. What is a master key system designed to accomplish?
A. Make every key identical
B. Allow selected keys to operate multiple locks while maintaining individual key
operation
C. Eliminate the need for cylinders
D. Prevent all unauthorized key duplication
Answer: Allow selected keys to operate multiple locks while maintaining
individual key operation
Rationale: A master key system establishes controlled levels of access while
individual change keys operate specific locks.
7. What is the purpose of a restricted keyway?
A. To make a door heavier
B. To limit unauthorized key duplication and control key distribution
C. To eliminate the cylinder
D. To make the lock waterproof
Answer: To limit unauthorized key duplication and control key distribution
Rationale: Restricted key systems are designed to provide greater control over
who can obtain duplicate keys.
8. What does “keyed alike” generally mean?
A. All keys have different cuts
B. One key operates several locks
C. Every lock has a different master key
D. Keys are made without cuts
Answer: One key operates several locks
, Rationale: Locks that are keyed alike are configured so the same operating key
can operate each lock.
9. What does “keyed differently” mean?
A. Each lock is operated by its own individual key
B. All locks use one master key only
C. No keys are required
D. All cylinders are identical internally
Answer: Each lock is operated by its own individual key
Rationale: Keyed-different cylinders are configured with different key
combinations.
10. Which measurement is especially important when replacing a cylindrical
lock?
A. Ceiling height
B. Backset
C. Roof pitch
D. Window width
Answer: Backset
Rationale: Backset is the distance from the edge of the door to the centerline of
the lock or bore and must match the replacement hardware.
11. A common residential latch backset is approximately:
A. 1 inch
B. 2⅜ inches
C. 6 inches
D. 12 inches
Answer: 2⅜ inches
