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200-301 · Question #814

Which statement describes the effect of the overload keyword in the ip nat inside source list 90 interface ethernet 0/0 overload command?

The correct answer is D. Addressesthat match access list90are translated through PAT to the IP address of the Ethernet. The overload keyword in a NAT command enables Port Address Translation (PAT), allowing multiple internal IP addresses matching access list 90 to share the single public IP address of the Ethernet 0/0 interface.

Submitted by carlos_mx· Mar 5, 2026IP Services

Question

Which statement describes the effect of the overload keyword in the ip nat inside source list 90 interface ethernet 0/0 overload command?

Options

  • AAddresses that match access listinsideare translated to the IP address of the Ethernet 0/0
  • BHosts that match access listinsideare translated to an address in the Ethernet 0/0 network.
  • CHosts on the Ethernet 0/0 LAN are translated to the address pool in access list90.
  • DAddressesthat match access list90are translated through PAT to the IP address of the Ethernet

How the community answered

(43 responses)
  • B
    2% (1)
  • C
    2% (1)
  • D
    95% (41)

Why each option

The overload keyword in a NAT command enables Port Address Translation (PAT), allowing multiple internal IP addresses matching access list 90 to share the single public IP address of the Ethernet 0/0 interface.

AAddresses that match access listinsideare translated to the IP address of the Ethernet 0/0

The option references "access list inside," but the command specifies access list 90, making this statement inaccurate regarding the ACL used.

BHosts that match access listinsideare translated to an address in the Ethernet 0/0 network.

This option incorrectly refers to "access list inside" and implies translation to "an address in the Ethernet 0/0 network," which is vague and does not precisely describe PAT to the interface's IP.

CHosts on the Ethernet 0/0 LAN are translated to the address pool in access list90.

This option incorrectly states that hosts on Ethernet 0/0 are translated to an address pool in access list 90. Access list 90 defines the source addresses to be translated, not an address pool for translation.

DAddressesthat match access list90are translated through PAT to the IP address of the EthernetCorrect

The overload keyword enables Port Address Translation (PAT). This allows multiple internal private IP addresses that match access list 90 to be translated to a single public IP address, specifically the IP address assigned to the Ethernet 0/0 interface, using distinct port numbers to distinguish sessions.

Concept tested: Port Address Translation (PAT) / NAT Overload

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_nat/configuration/xe-16/nat-xe-16-book/nat-overview.html

Topics

#Cisco NAT#NAT overload#PAT

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