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Computer Networking

Computer Networking
Which of the following connectivity devices is used to extend a network on a purely mechanical basis?

802.6
Active hub
Switch
Gateway
Router

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Computer Networking
The ________ measures the number of lost or garbled messages as a fraction of the total sent in the sampling period.

Connection establish.
Connection release failure probability.
Residual Error Rate.
Transfer Failure Probability.

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Computer Networking
A communications device that combines transmissions from several I/O devices into one line is a:

concentrator
multiplexer
modifier
None of these
full-duplex line

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Computer Networking
Four bits are used for packet sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size?

8
4
16
None of these
15

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Computer Networking
End-to-end connectivity is provided from host-to-host in:

Transport layer
None of these
Network layer
Data link layer
Session layer

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Computer Networking
Segmentation of a data stream happens at which layer of the OSI model?

Data Link
Transport
Physical
Network

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