Computer Networking
Which of the following technique is used for Time-To-Line (TTL)?

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
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.
None of these
a technique used in best-effort delivery system to avoid endlessly looping packets.

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Computer Networking
Modulation is the process of

converting analog signals to digital signals
performing data encryption.
converting digital signals to analog signals
Multiplexing various signals into high speed line signals

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Computer Networking
Which of the following characteristic(s) is/are suited to the PSS applications?

bursty traffic and low communications intensity
All of these
Multiple remote host or applications accessed by a single local access circuit terminal and circuit
widely dispersed terminals and access to international packets switched services
None of these

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