Which category supports 10 Gbps and has a 500 MHz bandwidth and is described as shielded?

• A. Ethernet (Cat 6)
• B. Ethernet (Cat 7)
• C. Ethernet (Cat 5e)
• D. Ethernet (Cat 5)

Answer: (A)

Cables are chosen by the combination of maximum bandwidth and the speeds they can reliably carry, and shielding is used to reduce interference from nearby cables and electronics. When you need 10 Gbps performance, you look at higher-category cables, and shielding is one way to improve signal integrity.

Ethernet Cat 6 is the best match here because it is the category that inherently offers a significant jump in performance over the older Cat 5/5e, and it can be constructed with shielding to reduce crosstalk and EMI. That combination—high enough bandwidth to support 10 Gbps over typical distances, plus the option of shielding—fits the described requirements better than the other choices, which either don’t support 10 Gbps (Cat 5/5e) or are typically associated with different shielding standards and higher nominal bandwidth (Cat 7).

Note that Cat 7 is also shielded and capable of 10 Gbps, but it’s less common in typical deployments and uses different connectors and standards, so in many exam contexts Cat 6 is presented as the practical shielded option capable of high-speed performance.