An ACL is applied inbound on a router interface. The ACL consists of a single entry: access-list 101 permit udp 192.168.100.0 0.0.2.255 64.100.40.0 0.0.0.15 eq telnet . If a packet with a source address of 192.168.101.45, a destination address of 64.100.40.4, and a protocol of 23 is received on the interface, is the packet permitted or denied?
IT Exam Items Repository › Category: CCNA › An ACL is applied inbound on a router interface. The ACL consists of a single entry: access-list 101 permit udp 192.168.100.0 0.0.2.255 64.100.40.0 0.0.0.15 eq telnet . If a packet with a source address of 192.168.101.45, a destination address of 64.100.40.4, and a protocol of 23 is received on the interface, is the packet permitted or denied?
An ACL is applied inbound on a router interface. The ACL consists of a single entry:
If a packet with a source address of 192.168.101.45, a destination address of 64.100.40.4, and a protocol of 23 is received on the interface, is the packet permitted or denied?
denied
permitted
Explanation:
Protocol Mismatch: The ACL is configured to permit UDP traffic, but Telnet (port 23) is a TCP protocol service.
Source Address Mismatch: The source address 192.168.101.45 does not match the range defined by 192.168.100.0 0.0.2.255. The wildcard 2 in the third octet (00000010) requires the last bit to be 0 (matching only 100 and 102), whereas 101 ends in 1.
Implicit Deny: Since the packet does not match the specific permit statement, it is discarded by the implicit deny any statement that exists at the end of every ACL.
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