Computer Networking
Error detecting code is

a check bit appended to an array of binary digits to make the sum of all the binary digits.
None of these
the ratio of the data units in error to the total number of data units
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

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Computer Networking
Which of the following access lists will allow only HTTP traffic into network 196.15.7.0?

access-list 100 permit tcp any 196.15.7.0 0.0.0.255 eq www
access-list 100 permit 196.15.7.0 0.0.0.255 eq www
access-list 110 permit ip any 196.15.7.0 0.0.0.255
access-list 10 deny tcp any 196.15.7.0 eq www

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