Cisco CCNA 200-301 Exam

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A network administrator applies the following ACL to the inbound direction of an interface: `access-list 101 permit tcp 10.1.1.0 0.0.0.255 any eq 80` `access-list 101 permit tcp 10.1.1.0 0.0.0.255 any eq 443` A user on the 10.1.1.50 host reports that they can access websites but cannot resolve domain names using the company's DNS server at 10.10.10.10. What is the most likely cause of this issue?

The DNS traffic is being blocked by the implicit deny at the end of the ACL. The ACL is applied in the wrong direction on the interface. A named ACL must be used for DNS traffic. The source address in the ACL statements is incorrect.

Correct Answer:

The DNS traffic is being blocked by the implicit deny at the end of the ACL.

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