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

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

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Computer Networking
Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.

Repeaters cannot increase the signal strength sufficiently
"Line echo" occurs due to the impedance of the cable
Cable terminators do not reflect the signal properly
Cable terminators do not absorb the signal properly
Network collisions occur

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Computer Networking
The main difference between synchronous and asynchronous transmission is

the bandwidth required is different
the clocking is derived from the data in synchronous transmission
None of these
the pulse height is different.
the clocking is mixed with the data in asynchronous transmission

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