Refer to the exhibit. Only administrators from the subnet 10.10.10.0/24 are permitted to have access to the router. A secure protocol must be used for the remote access and management of the router in

Question

Exhibits

Options

• Aaccess-list 23 permit 10.10.10.0 0.0.0.255 line vty 0 15 access-class 23 in transport input ssh
• Baccess-list 23 permit 10.10.10.0 0.0.0.255 line vty 0 15 access-class 23 out transport input all
• Caccess-list 23 permit 10.10.10.0 0.0.0.255 line vty 0 4 access-class 23 in transport input ssh
• Daccess-list 23 permit 10.10.10.0 255.255.255.0 line vty 0 15 access-class 23 in transport input ssh

• A
  88% (23)
• C
  8% (2)
• D
  4% (1)

Explanation

Option A correctly creates an ACL permitting only the 10.10.10.0/24 subnet using the proper wildcard mask (0.0.0.255), applies it inbound on all 16 VTY lines (0–15) using 'access-class 23 in', and restricts remote access to SSH only via 'transport input ssh', satisfying both the access restriction and secure protocol requirements. The 'access-class in' direction filters incoming connection attempts, ensuring only authorized administrators can initiate sessions. Together, these commands replace clear-text protocols like Telnet with the encrypted SSH protocol.

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