200-301 Question #918: Real Exam Question with Answer & Explanation

Question

Refer to the exhibit. What is the next step to complete the implementation for the partial NAT configuration shown?

Options

• AModify the access list for the internal network on e0/1.
• BReconfigure the static NAT entries that overlap the NAT pool.
• CApply the ACL to the pool configuration.
• DConfigure the NAT outside interface.

Explanation

After configuring NAT rules and pools, the final crucial step for implementation is to specify which interfaces are 'inside' and 'outside' for address translation.

Common mistakes.

• A. Modifying an existing access list is typically a refinement or troubleshooting step, not the primary next step to complete a partial NAT implementation if the ACL is already defined for NAT matching.
• B. Reconfiguring static NAT entries is a correction or modification task, not the immediate next step to initially enable NAT functionality on the interfaces.
• C. ACLs are used to match traffic for dynamic NAT pools and are referenced within the ip nat inside source command, but they are not 'applied to the pool configuration' as a separate command to complete the implementation.

Concept tested. NAT interface configuration

Reference. https://www.cisco.com/c/en/us/td/docs/ios/ipaddr/configuration/guide/iad_cfg.html

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