Refer to the exhibit. What is the result of the configuration?

ACL 1 explicitly permits traffic from 192.168.100.0/24, so that subnet is allowed terminal access - not denied - by the access-class configuration on the VTY lines.

While 192.168.100.0/24 is the only permitted source, the most precise and testable result of the configuration is what happens to non-matching traffic; additionally, without confirming all VTY lines are covered, 'only' is too absolute a qualifier.

ACL 1 is a standard IP ACL that matches solely on source IP address - it does not specify TCP or any other protocol; only extended ACLs can match on Layer 4 protocol, and access-class applies a standard ACL to VTY sessions.

The configuration applies ACL 1 - which permits only the 192.168.100.0/24 subnet - to the VTY lines using the 'access-class' command. Because Cisco ACLs terminate with an implicit deny-all, any traffic from a non-matching subnet such as 190.169.100.0/24 fails to match the permit entry and is blocked from gaining terminal access to the switch.