350-401 Question #1025: Real Exam Question with Answer & Explanation

The correct answer is D: RouterA(config)# ip nat inside source list 1 pool cisco overload. The question asks for the command to configure PAT (Port Address Translation) to allow multiple internal users to share a single public IP address for internet access.

Submitted by anjalisingh· Mar 6, 2026Infrastructure

Question

Refer to the exhibit. An engineer must configure PAT to provide internet access to all users by using one global address for many local addresses. Which command set completes the configuration?

Options

ARouterA(config)# ip nat inside source static 172.16.1.1 172.16.1.2
BRouterA(config)# ip nat inside source list 1 pool cisco
CRouterA(config)# ip nat inside source static 172.16.1.1 193.64.64.1
DRouterA(config)# ip nat inside source list 1 pool cisco overload

Explanation

The question asks for the command to configure PAT (Port Address Translation) to allow multiple internal users to share a single public IP address for internet access.

Common mistakes.

A. This command configures static NAT, mapping a single internal IP to a single internal-range IP, which does not provide one global address for many local addresses.
B. This command configures dynamic NAT without overload, which uses a pool of global IPs for one-to-one translation and does not allow multiple internal hosts to share a single global IP.
C. This command configures static NAT, mapping a single internal IP to a single external IP, which does not meet the requirement for many local addresses sharing one global address.

Concept tested. Cisco IOS PAT (NAT Overload) configuration

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_nat/configuration/xe-3s/nat-xe-3s-book/ipnat-overload.html

Topics

#Cisco NAT#PAT configuration#NAT overload#Cisco IOS commands

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