Refer to the exhibit. To protect in-band management access to CPE-R7, an engineer wants to allow only SSH management and provisioning traffic from management network 192.168.0.0/16. Which…

While it permits SSH and then denies other IP traffic to CPE-R7, it lacks the 'permit ip any any' at the end, which would implicitly deny all other transit traffic through PE-R9, likely disrupting other network services.

This ACL first permits TCP SSH traffic (port 22) from the 192.168.0.0/16 management network to CPE-R7 (assumed 10.1.1.7). The subsequent 'deny ip any host 10.1.1.7 log' explicitly denies all other IP traffic to CPE-R7, fulfilling the 'allow only SSH' requirement for that device. Finally, 'permit ip any any' allows all other non-CPE-R7-bound transit traffic to flow through PE-R9, which is crucial for its role as a network router.

This ACL starts by explicitly denying TCP SSH traffic to CPE-R7, which directly contradicts the requirement to allow it.

This ACL permits SSH traffic from any source, not just the specified 192.168.0.0/16 management network, making the protection less granular. It also has an implicit 'deny ip any any' at the end which would block all other transit traffic.