While testing an ACL on the default gateway router to allow only web browsing, ports TCP 80 and TCP 443 were the only ports open. When tested, no websites were accessible via their URLs inside the network. Which of the following configurations should be added to the ACL?
A) permit tcp any any eq 20
B) permit udp any any eq 25
C) permit udp any any eq 53
D) permit udp any any eq 68
E) permit tcp any any eq 110
F) permit tcp any any eq 8080

Question

Quizplus · Accepted Answer

DNS queries, which resolve URLs to IP addresses, use UDP port 53. Allowing this port will enable URL resolution.

While Testing an ACL on the Default Gateway Router to Allow