Computer Networking
Which of the following condition is used to transmit two packets over a medium at the same time?

Synchronous
Asynchronous
None of these
Collision
Contention

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Computer Networking
What is the purpose of flow control?

To regulate the size of each segment.
To reassemble segments in the correct order at the destination device.
To ensure that data is retransmitted if an acknowledgment is not received.
To provide a means for the receiver to govern the amount of data sent by the sender.

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Computer Networking
Communication network is

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

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