North Carolina Locksmith Practice Exam

The choice of "All Section Key Blank" is correct because it refers specifically to a key design that can operate every keyway within a multiplex key system. In locksmithing, multiplex key systems are designed to enhance security and access control by using multiple keyways where different keys can access different locks while still allowing for master keys or control keys to operate all locks within the system.

An All Section Key Blank has grooves or cuts that are designed to match multiple keyway configurations, thus enabling it to fit into all the different locks in the system seamlessly. This versatility allows for efficient management of access across the various locks that might be present in a given environment.

In contrast, the other types of key sections have more specialized uses. A Master Key is created to access multiple locks but is specifically part of a master-keying system rather than designed for overall compatibility with all keyways. A Bottom Section Key Blank typically refers to a key designed to operate individual locks rather than show the multi-keyway functionality of the All Section Key Blank. A Standard Key Blank usually refers to a common, non-specific key blank that may not be versatile enough to cover all keyways in a multiplex system.