North Carolina Locksmith Practice Exam

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Prepare for the North Carolina Locksmith Exam with engaging quiz materials that enhance your study experience. Access flashcards and multiple-choice questions crafted to boost your knowledge and confidence for the upcoming test.

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What type of deadbolt can be operated by a key from both sides?

Single Cylinder Deadlock
Double Cylinder Deadlock
Chain Lock
Deadlatch

The correct answer is: Double Cylinder Deadlock

The correct choice is the double cylinder deadlock. This type of deadbolt can be operated by a key from both sides, which enhances security by preventing unauthorized access through a door that has glass panels or windows nearby, as a person cannot simply reach in to unlock it from the inside. In contrast, a single cylinder deadlock typically allows for key operation from the outside, but has a thumb turn on the inside, which can be easily manipulated without a key. Chain locks and deadlatches also do not provide a key-operated function from both sides, as they are designed for different purposes and mechanisms, primarily focusing on convenience or additional security features rather than the dual-key operation that characterizes the double cylinder deadlock.