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200-301 · Question #5

Refer to the exhibit. What does router R1 use as its OSPF router-ID?

The correct answer is C. 172.16.15.10. OSPF uses the following criteria to select the router ID: 1. Manual configuration of the router ID (via the "router-id x.x.x.x" command under OSPF router configuration mode). 2. Highest IP address on a loopback interface. 3. Highest IP address on a non-loopback and active (no shu

Submitted by tarun92· Mar 5, 2026

Question

Refer to the exhibit. What does router R1 use as its OSPF router-ID?

Exhibits

200-301 question #5 exhibit 1
200-301 question #5 exhibit 2

Options

  • A10.10.1.10
  • B10.10.10.20
  • C172.16.15.10
  • D192.168.0.1

How the community answered

(30 responses)
  • A
    17% (5)
  • B
    10% (3)
  • C
    70% (21)
  • D
    3% (1)

Explanation

OSPF uses the following criteria to select the router ID: 1. Manual configuration of the router ID (via the "router-id x.x.x.x" command under OSPF router configuration mode). 2. Highest IP address on a loopback interface. 3. Highest IP address on a non-loopback and active (no shutdown) interface.

Topics

#OSPF#OSPF Router-ID

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