Computer Networking
Which of the following technique is used for encapsulation?

None of these
All of these
One of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size
a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame.
a technique used in best-effort delivery systems to avoid endlessly looping packets.

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Computer Networking
Demodulation is the process of

combining many low speed channels into one high speed channel
None of these
dividing the high-speed signals into frequency bands
converting analog signals to digital signals
converting digital signals to analog signals

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Computer Networking
RS-232-G

specifies only the mechanical characteristics of an interface by providing a 25-pin connector
requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
None of these
is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment
is an interface between two data circuit terminating equipment as examplified by a local and remote modem

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