What function do cable testers perform?

Cable testers perform essential functions for ensuring the integrity and reliability of network cabling systems. Specifically, they conduct continuity tests to verify that the electrical pathways in the cables are intact and capable of transmitting signals properly. Additionally, cable testers can identify wiring faults such as crossed wires, shorts, or open circuits, allowing technicians to troubleshoot and resolve issues effectively.

Continuity testing is crucial in networking because it confirms that data can successfully travel through the cable from one end to the other. Identifying wiring faults early helps prevent network issues that could lead to data loss or connectivity problems. Therefore, the correct response highlights the primary capabilities of cable testers, emphasizing their role in maintaining the functional quality of network cabling.

Options that mention frequency testing, data encryption, or boosting signal strength do not accurately describe the core functions of cable testers. Frequency testing is typically performed with specialized equipment that evaluates transmission speeds, while data encryption is a security measure unrelated to the physical properties of cables. Likewise, signal boosting involves the use of amplifiers and other technologies, rather than a testing device's functionality.