Q6. You are configuring an extended IP access-list. You want to permit ip traffic from the host 220.127.116.11. What is the correct syntax?
A. access-list 102 permit ip 18.104.22.168 0.0.255.255 any
B. access-list 102 permit ip host 22.214.171.124 any
C. access-list 102 permit ip any 126.96.36.199
D. access-list 102 permit ip 188.8.131.52 0.0.255.255
Correct Answer: B
Wild card masking:
Wild card masking is used to permit or deny a group of addresses. For example, if we have a source address 184.108.40.206 and want all the hosts on the last octet to be considered, we use a wild card mask, 220.127.116.11.
Host 18.104.22.168 is same as 22.214.171.124 with a wild card mask of 0.0.0.0, considers only specified IP.
Any is equivalent to saying 0.0.0.0 with a wild card mask of 255.255.255.255. This means none of the bits really matter. All IP addresses need to be considered for meeting the criteria.
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