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

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
All of these
None of these
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
Contention is

a continuous frequency capable of being modulated or impressed with a second signal
a collection of interconnected functional units that provides a data communications service among stations attached to the network
the condition when two or more stations attempt to use the same channel at the same time
One or more conductors that serve as a common connection for a related group of devices
None of these

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Computer Networking
Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

the method of determining which device has access to the transmission medium at any time.
All of these
a form of TDMA in which circuit switching is used to dynamically change the channel assignments
None of these
a medium access control technique for multiple access transmission media

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