In order to configure allowed IP addresses for SSH access to a BIG-IP device, the...

From the exhibit, the administrator performs the following actions:

Displays the current SSH allow configuration:

tmsh list sys sshd allow

allow { ALL }

Replaces the existing SSH allow list with a specific subnet:

tmsh modify sys sshd allow replace-all-with { 10.0.0.0/24 }

Confirms the updated configuration:

tmsh list sys sshd allow

allow { 10.0.0.0/24 }

This configuration restricts SSH access to only hosts that fall within the 10.0.0.0/24 network.

Evaluation of the options

A. 10.0.0.100

This address is within the 10.0.0.0/24 subnet and is a valid host address, so SSH access is permitted.

B. 10.0.0.254

This address is also within the 10.0.0.0/24 subnet and is a valid host address, so SSH access is permitted.

C. 10.0.0.256

This is not a valid IP address because an IPv4 octet cannot exceed 255.

D. 100.0.1.10

This address is outside the configured 10.0.0.0/24 subnet and will not be allowed.

E. 100.0.0.10

This address is also outside the configured subnet and will not be allowed.