220-801 · Question #968
Which of the following cables uses both the T568A and T568B standards?
The correct answer is A. Ethernet. Ethernet cables (specifically crossover cables) use both the T568A and T568B wiring standards - one standard on each end. Fiber, coaxial, and HDMI use entirely different physical and wiring specifications.
Question
Which of the following cables uses both the T568A and T568B standards?
Options
- AEthernet
- BFiber
- CCoaxial
- DHDMI
How the community answered
(38 responses)- A92% (35)
- B3% (1)
- C5% (2)
Why each option
Ethernet cables (specifically crossover cables) use both the T568A and T568B wiring standards - one standard on each end. Fiber, coaxial, and HDMI use entirely different physical and wiring specifications.
Ethernet twisted-pair cables use the T568A and T568B wiring standards defined by TIA/EIA-568. A straight-through cable uses the same standard on both ends, while a crossover cable uses T568A on one end and T568B on the other to reverse transmit and receive pairs for direct device-to-device connections.
Fiber optic cables transmit light signals and do not use copper wiring standards such as T568A or T568B.
Coaxial cables use a single center conductor with shielding and are terminated with connectors like F-type or BNC, not T568 standards.
HDMI cables carry digital audio and video signals and use their own connector and wiring specification unrelated to T568 standards.
Concept tested: Ethernet T568A and T568B wiring standards
Source: https://www.comptia.org/certifications/network
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