The routing table of a router contains the following two entries: Destination/Mask Protocol Pre Cost Nexthop Interface 9.0.0.0/8 OSPF 10 50 1.1.1.1 Serial0 9.1.0.0/16 RIP 100 5 2.2.2.2 Ethernet0 If…

Question

Options

• AThe router selects the first route, because the priority of OSPF is higher.
• BThe router selects the second route, because this route matches the destination address 9.1.4.5
• CThe router selects the second route, because the metric of RIP is smaller.
• DThe router selects the second route, because the outbound interface is Ethernet0, which is faster

• A
  3% (1)
• B
  71% (24)
• C
  9% (3)
• D
  18% (6)

Explanation

When a router forwards packets, it selects the route with the longest prefix match (most specific route) for the destination address. First Route: Matches 9.0.0.0/8, which covers all IP addresses starting with 9. Second Route: Matches 9.1.0.0/16, which is more specific and covers IP addresses starting with For the destination address 9.1.4.5 , the second route (9.1.0.0/16) is a better match because it is more specific than the first route (9.0.0.0/8). Option A: Incorrect. OSPF has a higher priority, but the longest prefix match takes precedence Option B: Correct. The second route matches the destination address more accurately. Option C: Incorrect. Metric is not considered when comparing routes with different prefix lengths. Option D: Incorrect. Interface speed is irrelevant in route selection.

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