Computer Networking
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?

None of these
128 Kbps.
64 Kbps
8 Kbps
32 Kbps

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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?

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

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