300-510 SPRI: Implementing Cisco Service Provider Advanced Routing SolutionsDemo

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QuestionQ197

Unicast Routing

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Refer to the exhibit. An engineer is addressing an IS-IS design issue running within the topology. All links run on FastEthernet except the link between R5 and R4, which is Gigabit Ethernet. Which statement about the design is true?

  • A R4 prefer to reach R5 using R1 as the next hop
  • B All links have equal cost if the default metric is used
  • C R5 prefers to use R4 as the next hop for all routes
  • D R1 prefer to use R5 as the next hop to reach R4
Explanation

Cisco IS-IS assigns the default metric of 10 to all active interfaces unless a metric is explicitly configured. Interface bandwidth does not change that default IS-IS cost, so the FastEthernet and Gigabit Ethernet links all have equal cost.

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