200-301: Cisco Certified Network AssociateDemo

By Cisco · Question Mode

QuestionQ1172

Network Fundamentals

What is a similarity between the 1000BASE-LX and 1000BASE-T standards?

  • A Both use the same data-link header and trailer formats.
  • B Both cable types support RJ-45 connectors.
  • C Both support up to 550 meters between nodes.
  • D Both cable types support LR connectors.
Explanation

1000BASE-LX and 1000BASE-T are both IEEE 802.3 Gigabit Ethernet variants, so they use the same Ethernet data-link framing, including the standard header and trailer format. Their main differences are at the physical layer: 1000BASE-LX uses fiber optics, while 1000BASE-T uses copper twisted-pair cabling.

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