CompTIA Network+ Practice Test

What feature distinguishes twinaxial cable from other cable types?

1. It has a single conductor

2. It is common on 10 gigabit Ethernet SFP+ cables

3. It can only transmit data one way

4. It requires an elaborate network setup

The correct answer is: It is common on 10 gigabit Ethernet SFP+ cables

Twinaxial cable is specifically designed for high-speed data transmission and is commonly used in applications where a short distance is required, such as within data centers. The correct answer points to its frequent application in 10 Gigabit Ethernet SFP+ cables, which are essential for connecting network devices at high speeds over short ranges. The construction of twinaxial cables, which includes two inner conductors surrounded by a shield, allows for effective transmission with minimal attenuation and interference, making them suitable for such high-bandwidth applications. In contrast to the other options, a twinaxial cable does not feature a single conductor; instead, it has multiple conductors which enable differential signaling. The capability to transmit data in both directions simultaneously (full duplex) is another characteristic that demarcates it from a one-way transmission cable. Additionally, twinaxial cabling does not necessitate an elaborate network setup compared to other higher-level cabling systems like fiber optics, which often require more sophisticated handling due to the fragility of the cables and the need for specialized connectors and switches. Thus, the distinct application of twinaxial cables in high-speed networking directly correlates with option B being the right answer.