200-301 Question #774: Real Exam Question with Answer & Explanation

Question

Which command can you enter to set the default route for all traffic to an interface?

Options

• Arouter(config)#ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/1
• Brouter(config)#ip route 0.0.0.0 255.255.255.255 GigabitEthernet0/1
• Crouter(config-router)#default-information originate
• Drouter(config-router)#default-information originate always

Explanation

To configure a default route for all traffic to exit a specific interface, the ip route 0.0.0.0 0.0.0.0 command followed by the interface name is used.

Common mistakes.

• B. A subnet mask of 255.255.255.255 (a host route) for a destination of 0.0.0.0 is syntactically incorrect and would not create a default route.
• C. default-information originate is used within routing protocols (like OSPF or EIGRP) to inject a default route into the routing updates, not to configure a static default route directly on the router.
• D. default-information originate always is also used within routing protocols to always advertise a default route, regardless of whether one exists in the local routing table, and does not configure a static default route.

Concept tested. Static default route configuration

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_static/configuration/xe-16-5/irs-xe-16-5-book/irs-static-rt-cfg.html

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