Examveda
Examveda

You need to create an access list that will prevent hosts in the network range of 192.168.160.0 to 192.168.191.0. Which of the following lists will you use?

A. access-list 10 deny 192.168.160.0 255.255.224.0

B. access-list 10 deny 192.168.160.0 0.0.191.255

C. access-list 10 deny 192.168.160.0 0.0.31.255

D. access-list 10 deny 192.168.0.0 0.0.31.255

Answer: Option C

Solution(By Examveda Team)

The range of 192.168.160.0 to 192.168.191.0 is a block size of 32. The network address is 192.168.160.0 and the mask would be 255.255.224.0, which for an access list must be a wildcard format of 0.0.31.255. The 31 is used for a block size of 32. The wildcard is always one less than the block size.

Join The Discussion

Related Questions on Security