200-301: Cisco Certified Network AssociateDemo

By Cisco · Question Mode

QuestionQ680

Network Fundamentals

Which characteristic is common to 10GBase-SR and 10GBase-LR interfaces?

  • A Both use the single-mode fiber type.
  • B Both require UTP cable media for transmission.
  • C Both require fiber cable media for transmission.
  • D Both use the multimode fiber type.
Explanation

10GBASE-SR and 10GBASE-LR are both 10 Gigabit Ethernet optical PHY standards that transmit over fiber media. SR is specified for short-reach operation over multimode fiber, while LR is specified for long-reach operation over single-mode fiber, so the common requirement is fiber cabling rather than a shared fiber type.

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