Computer Networking
Error detecting code is

the ratio of the data units in error to the total number of data units
None of these
a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and
an error-detecting code based on a summation operation performed on the bits to be checked
a check bit appended to an array of binary digits to make the sum of all the binary digits.

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Computer Networking
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?

access-list 10 deny 192.168.160.0 255.255.224.0
access-list 10 deny 192.168.160.0 0.0.31.255
access-list 10 deny 192.168.160.0 0.0.191.255
access-list 10 deny 192.168.0.0 0.0.31.255

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