Refer to the output from the show running-config command in the exhibit. What should the administrator do to allow the workstations connected to the FastEthernet 0/0 interface to obtain an IP address?

Question

Exhibit

Options

• AApply access-group 14 to interface FastEthernet 0/0.
• BAdd access-list 14 permit any any to the access list configuration.
• CConfigure the IP address of the FastEthernet 0/0 interface to 10.90.201.1.
• DAdd an interface description to the FastEthernet 0/0 interface configuration.

• B
  3% (1)
• C
  92% (36)
• D
  5% (2)

Explanation

For workstations to obtain IP addresses via DHCP, the router interface they are connected to must have an IP address configured. Without an IP address on FastEthernet 0/0, the router cannot determine which DHCP pool to assign addresses from, and DHCP helper functionality (ip helper-address) also requires a configured interface IP. Configuring the interface IP (e.g., 10.90.201.1) anchors the router to the correct subnet and enables DHCP to function. Access lists (choices A and B) control traffic filtering, not DHCP address assignment. Adding an interface description (choice D) is purely cosmetic and has no functional effect.

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