Computer Networking
Which statement is true regarding classless routing protocols?1. The use of discontiguous networks is not allowed.2. The use of variable length subnet masks is permitted.3. RIPv1 is a classless routing protocol.4. IGRP supports classless routing within the same autonomous system.5. RIPv2 supports classless routing.

1, 3 and 5
None of these
3 and 4
2 and 5

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Computer Networking
A WATS arrangement

is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
None of these
is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is always less expensive than flat-rate service
is never less expensive than flat-rate service

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