Network Defense Essentials (NDE) 2026 – 400 Free Practice Questions to Pass the Exam

Fiber optic cable is least susceptible to wiretapping threats due to the fundamental way it transmits data. Unlike copper and twisted pair cables that use electrical signals, fiber optic cables transmit data as light signals through glass or plastic fibers. This transmission method inherently provides a higher level of security.

One significant advantage of fiber optics is that they are very difficult to tap into without being detected. Intercepting the signal typically requires physically cutting the fiber, which not only disrupts service but also triggers alarms in most security systems designed to monitor unauthorized access. Furthermore, fiber optic cables do not emit electromagnetic signals, which makes them immune to eavesdropping techniques that rely on listening to electromagnetic leaks from traditional metal cables.

This makes fiber optic cabling a preferred choice for secure communications, such as in military, government, and financial sectors where data integrity and confidentiality are paramount. In contrast, copper and twisted pair cables are more vulnerable because they can leak signals and can be easier to physically tap without immediate detection. Coaxial cables also have similar weaknesses as they use electrical signaling, making them susceptible to wiretapping threats.