Computer Networking
Error rate is

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

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Computer Networking
HDLC (High-level Data Link Control) is

a very common bit-oriented data link protocol issued by ISO.
a method of determining which device has access to the transmission medium at any time
network access standard for connecting stations to a circuit-switched network
None of these
a method access control technique for multiple-access transmission media

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Computer Networking
A network administrator views the output from the show ip route command. A network that is advertised by both RIP and IGRP appears in the routing table flagged as an IGRP route. Why is the RIP route to this network not used in the routing table?

RIP has a higher metric value for that route.
The IGRP route has fewer hops.
IGRP has a faster update timer.
IGRP has a lower administrative distance.

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