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350-401 · Question #815

Refer to the exhibit. Hosts FC1, PC2; and PC3 must access resources on Server1. An engineer configures NAT on Router R1 to enable the communication and enters the show command to verify operation. Whi

The correct answer is A. 155.1.1.1. When NAT Overload (PAT) is configured using an interface, all internal hosts appear to originate from the outside interface's IP address.

Submitted by carter_n· Mar 6, 2026IP Services

Question

Refer to the exhibit. Hosts FC1, PC2; and PC3 must access resources on Server1. An engineer configures NAT on Router R1 to enable the communication and enters the show command to verify operation. Which IP address is used by the hosts when they communicate globally to Server1?

Exhibits

350-401 question #815 exhibit 1
350-401 question #815 exhibit 2

Options

  • A155.1.1.1
  • Brandom addresses in the 155.1.1.0/24 range
  • Ctheir own address in the 10.10.10.0/24 range
  • D155.1.1.5

How the community answered

(43 responses)
  • A
    84% (36)
  • B
    2% (1)
  • C
    9% (4)
  • D
    5% (2)

Why each option

When NAT Overload (PAT) is configured using an interface, all internal hosts appear to originate from the outside interface's IP address.

A155.1.1.1Correct

NAT Overload (Port Address Translation or PAT), configured with `ip nat inside source list <ACL> interface <OUTSIDE_INTERFACE> overload`, translates multiple inside local IP addresses to a single inside global IP address, which is the IP address of the router's outside interface.

Brandom addresses in the 155.1.1.0/24 range

Random addresses in the 155.1.1.0/24 range would imply a NAT pool is configured, but `interface overload` uses the interface's primary IP.

Ctheir own address in the 10.10.10.0/24 range

Their own addresses in the 10.10.10.0/24 range would be used if NAT was not functioning or not applied to these hosts, but the question states NAT is configured.

D155.1.1.5

An IP address like 155.1.1.5 would be used if a specific NAT pool was configured with that address or a static NAT mapping, neither of which is implied by 'interface overload'.

Concept tested: NAT Overload (PAT) behavior

Source: https://www.cisco.com/c/en/us/td/docs/ios/security/config_nat/configuration/guide/nat_cfg_guide.html#wp1055745

Topics

#NAT#IP Addressing#Router Configuration

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