Examination 61
Introduction to Locks and Keys
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03100202
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Questions 1–20: Select the one best answer to each question.
1. All of the following are part of a padlock except which one?
A. Casing C. Key
B. Latch D. Shackle
2. Which of the following lock types are most frequently used in cars?
A. Disk tumbler and warded C. Pin tumbler and disk tumbler
B. Warded and lever tumbler D. Lever tumbler and disk tumbler
3. A double-cylinder lock is a good choice for when you want the ability to lock a door
A. without using a key.
B. with the same key used for the car’s ignition.
C. from outside the building as well as from the inside.
D. in two different spots along the door’s frame.
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4. The process of changing the internal mechanism of a lock to fit a new key is called
A. impressioning. C. duplicating.
B. rekeying. D. lockpicking.
5. Which of the following best describes a strike?
A. A tool used to saw holes in a door
B. The motion used to cut notches in a key blank
C. The recessed space in a door frame that accepts the bolt or latch
D. The numbered dial on the front of a combination lock
6. The process of using a lock as a “mold” to make a new key is called
A. rekeying. C. impressioning.
B. lockpicking. D. reading.
7. Which of the following keys is a type of bit key?
A. Cylinder key C. Lever key
B. Barrel key D. Disk key
8. What are the main parts of a combination padlock’s inner mechanism?
A. The wheels or tumblers C. The keys
B. The shackles D. The barrels
9. The oldest known lock in existence was discovered in Egypt. What basic type of
mechanism does this ancient lock contain?
A. Pin tumbler C. Warded
B. Lever tumbler D. Disk tumbler
10. Which of the following best describes the purpose of a time lock?
A. It allows a safe to be opened at a certain time of the day.
B. It’s used to secure time clocks in the workplace.
C. It’s opened with a coded plastic card.
D. It’s fitted with a panic button in case of a sudden robbery.
11. What type of key is most commonly used in door locks and car ignitions today?
A. Cylinder key C. Barrel key
B. Bit key D. Flat key
12. Any complete door opening set that includes a doorknob, a lock cylinder, a deadbolt,
and all the hardware needed for installation is called a
A. mortise cylinder. C. door stile.
B. rim cylinder. D. lockset.
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13. Which of the following key parts is present in all types of keys?
A. Bow C. Barrel
B. Shoulder D. Blade
14. The cylinder of a lock is the
A. opening where the key fits through.
B. tunnel that a key slides into.
C. recess in the door frame that accepts the bolt.
D. tube surrounding the plug.
15. A lock cylinder that can be installed directly into the surface of a door is called a
A. strike. C. padlock.
B. mortise cylinder. D. rim cylinder.
16. What shape does the end of a deadbolt have?
A. Angled C. Squared
B. Pointed D. Rounded
17. What type of key is used with the locks most often found on vending machines and
computers?
A. Flat key C. Tubular key
B. Bit key D. Cylinder key
18. Hotels, motels, large businesses, and institutions frequently use what type of key
system?
A. A tubular key system C. A blank key system
B. A precut key system D. A master key system
19. The Yale lock is also known as the
A. card key lock. C. computer lock.
B. pin-rim deadlock. D. pin cylinder lock.
20. Which of the following describes a key’s bow?
A. The overall shape of a key C. The tip of a key
B. The notches on the side of a key D. The handle of a key
