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Computer Networking

Computer Networking
Which switching technology reduces the size of a broadcast domain?

802.1Q
VLANs
ISL
STP

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

Switch
Router
802.6
Gateway
Active hub

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Computer Networking
Microprogramming is

assembly language programming
programming of minicomputers
macro programming of microcomputers
None of these
control unit programming

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Computer Networking
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?

Interface
Teleprocessor
Modem
Attenuation
None of these

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Computer Networking
Which of the following performs modulation and demodulation?

modem
fiber optic
None of these
coaxial cable
satellite

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Computer Networking
Which of the following is not a disadvantage of wireless LAN?

interference of transmissions from different computers
All of these
Slower data transmission
higher error rate

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