A router has an existing ACL that permits all traffic from 172.16.0.0. The administrator wants to block packets from host 172.16.0.1 but receives an error. What action can the administrator take?

Last Updated: Mar 11, 2026
IT Exam Items Repository › Category: Cybersecurity Essentials › A router has an existing ACL that permits all traffic from 172.16.0.0. The administrator wants to block packets from host 172.16.0.1 but receives an error. What action can the administrator take?

A router has an existing ACL that permits all traffic from 172.16.0.0. The administrator wants to block packets from host 172.16.0.1 but receives an error. What action can the administrator take?

  • Create a second access list denying the host and apply it to the same interface.
  • Add a deny any any ACE to access-list 1.
  • Manually add the new deny ACE with a sequence number of 5.
  • Manually add the new deny ACE with a sequence number of 15.

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