200-301 Question #767: Real Exam Question with Answer & Explanation

Question

In which situation would the use of a static route be appropriate?

Options

• ATo configure a route to the first Layer 3 device on the network segment.
• BTo configure a route from an ISP router into a corporate network.
• CTo configure a route when the administrative distance of the current routing protocol is too low.
• DTo reach a network is more than 15 hops away.
• ETo provide access to the Internet for enterprise hosts.

Explanation

Static routes are typically used when a network path is simple, known, and does not require dynamic updates, such as when connecting to an Internet Service Provider (ISP).

Common mistakes.

• A. Configuring a route to the first Layer 3 device on a network segment usually refers to a host's default gateway, not a static route on a router for a separate network.
• C. A low administrative distance indicates a preferred route; configuring a static route because the current AD is 'too low' is illogical, as a static route would typically be used to override a less preferred route (higher AD) or for specific fixed paths.
• D. The number of hops to a destination network does not inherently determine the appropriateness of a static route; static routes are chosen based on network topology stability and administrative control, not hop count.
• E. While providing Internet access often involves a static default route on the enterprise edge, option B describes a specific scenario for an ISP configuring a static route into a corporate network, which is also a very appropriate use case.

Concept tested. Static route appropriate use

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_static/configuration/xe-3s/irs-xe-3s-book/irs-static-rte-cfg.html

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