The 24 inch measurement is used to determine which practice?

• A. Alarm termination distance from entry
• B. Cable securing interval
• C. Working space height
• D. Fiber bending radius

Answer: (A)

The main idea being tested is how the 24-inch reference is used to position the alarm termination in relation to the entry of an enclosure. In this practice, the standard 24 inches defines where the alarm termination point should be located from the entry, so the alarm is triggered consistently when access is attempted and maintenance access remains practical. This fixed distance helps ensure a uniform, inspectable installation across sites, keeps the alarm visible and reachable, and avoids interference with door operation or other hardware.

Other options involve different design aspects: cable securing intervals, working space height, and fiber bending radius each follow their own standards and are not determined by a 24-inch reference in this context.