TestOut LabSim A+ Certification Practice Exam

Which are characteristics of coaxial network cable?

1. It is highly flexible and lightweight

2. It uses two concentric metallic conductors

3. It has a conductor made from copper in the center of the cable

4. It supports high-speed fiber optics

The correct answer is: It uses two concentric metallic conductors

Coaxial network cable is defined by its use of two concentric metallic conductors, which distinguishes it from other types of networking cables. The inner conductor, typically made of copper, transmits the signal, while the outer conductor acts as a shield to protect the signal from electromagnetic interference (EMI) and to provide a return path. This coaxial design allows for excellent signal integrity over longer distances, making it a favored choice for cable television and internet services. The other characteristics provided do not accurately describe coaxial cables. While coaxial cables do have a central copper conductor, the emphasis on concentric design is broader as it highlights the important structural aspect of the cable. Coaxial cables also have limited flexibility compared to other types of cables, such as twisted pair cables, which makes the first choice incorrect. Additionally, coaxial cables do not support fiber optics, which involves a completely different technology used for transmitting data using light rather than electrical signals. Thus, the focus on the concentric metallic structure correctly identifies a fundamental characteristic of coaxial cables.