CompTIA Network+ Practice Test

What is a key feature of the visual fault locator?

1. It provides a detailed report of network activity

2. It uses light to indicate breaks in optical fiber

3. It enhances the signal for wireless devices

4. It measures latency within a connection

The correct answer is: It uses light to indicate breaks in optical fiber

A visual fault locator is specifically designed to assist technicians in identifying breaks and faults within optical fiber cables. Its primary feature is the ability to emit visible light, typically from a laser source, that travels through the fiber. When there is a break or a significant bend in the fiber, the light will escape at that point, making it visually evident where the fault lies. This functionality is essential for maintaining the integrity of optical networks, as it allows for quick identification and repair of issues without the need for more complex and time-consuming testing methods. In contrast, the other options refer to different functions that are not part of what a visual fault locator does. For example, detailed reporting of network activity is more aligned with network monitoring tools, while signal enhancement pertains to devices like repeaters or amplifiers used in wireless networks. Latency measurement is typically conducted using tools designed for network performance testing, rather than a visual fault locator. Therefore, the characteristic of using light to indicate breaks in optical fiber distinguishes the visual fault locator from other network devices.