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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?

Router
Switch
Gateway
802.6
Active hub

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Computer Networking
Number of bits per symbol used in Baudot code is

1
9
5
8
None of these

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Computer Networking
The loss in signal power as light travels down the fiber is called

None of these
attenuation
propagation
scattering
interruption

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Computer Networking
Which of the following is an important characteristic of LAN?

unlimited expansion
application independent interfaces
parallel transmission
None of these
low cost access for low bandwidth channels

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Computer Networking
Communication circuits that transmit data in both directions but not at the same time are operating in

None of these
an asynchronous mode
a simplex mode
a half-duplex mode
a full-duplex mode

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Computer Networking
A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose?

Communications software
Link access procedure (LAP)
Error detecting protocols
None of these
Telecommunications

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