Exam F5CAB1 Topic 3 Question 27 Discussion

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.