North Carolina Locksmith Practice Exam

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Question: 1 / 435

What does the term "change key" refer to?

A key that operates all locks in a system

A specific key that can change a lock's combination

A key that works with a master key in a system

The term "change key" primarily refers to a key that works with a master key within a master key system. In such systems, the master key is designed to operate multiple locks, while the change key is specific to individual locks or smaller groups of locks. This setup enhances security and convenience, allowing certain users to access only specific areas without having universal access that a master key would provide.

In this context, a change key allows for selective access even in environments where a master key is in use, thus maintaining controlled access to different areas. Knowing how a change key functions is essential for locksmithing, as it helps address security needs in varied applications, from residential to commercial settings. Understanding this also distinguishes the change key from other types of keys and their respective functions, further emphasizing its role within a hierarchical keying system.

North Carolina Locksmith Practice Exam

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