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?

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

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Computer Networking
ARP (Address Resolution Protocol) is

a protocol that handles error and control messages
a protocol used to monitor computers
a TCP/IP high level protocol for transferring files from one machine to another
None of these
a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address

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