350-401 Question #577: Real Exam Question with Answer & Explanation

Question

Refer to the exhibit. An engineer configures OSPF and wants to verify the configuration. Which configuration is applied to this device?

Options

• AR1(config)#interface Gi0/1
• BR1(config)#router ospf 1
• CR1(config)#interface Gi0/1
• DR1(config)#router ospf 1

Explanation

The question, despite lacking an exhibit, asks which configuration command is applied for OSPF. The interface Gi0/1 command enters the specific interface configuration mode where OSPF settings can be directly applied.

Common mistakes.

• A. This option is identical to C, and typically in a multiple-choice question, distinct options are expected. If C is correct, A would also technically be correct due to redundancy.
• B. The router ospf 1 command enters the OSPF routing process configuration mode, which is used for global OSPF settings like router ID and network commands, but not for direct interface-specific OSPF parameters like ip ospf area.
• D. The router ospf 1 command enters the OSPF routing process configuration mode, which is used for global OSPF settings like router ID and network commands, but not for direct interface-specific OSPF parameters like ip ospf area.

Concept tested. OSPF interface configuration context

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-mt/iro-15-mt-book/iro-cfg.html

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