Question Discussion & Solution

MCQ

"BAUD" rate means

The number of bits transmitted per unit time.

The number of bytes transmitted per unit time.

The rate at which the signal changes.

None of the above

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MCQ

Which is the device that converts computer output into a form that can be transmitted over a telephone line?

Teleport

Multiplexer

Concentrator

Modem

Discussion

MCQ

The difference between a multiplexer and a statistical multiplexer is

Statistical multiplexers need buffers while multiplexers do not need buffers

Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol

Multiplexers often waste the output link capacity while statistical multiplexers optimize its use

Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)

None of the above

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In a PC to telephone hookup for long distance communication, modem is connected between the telephone line and

synchronous port

crossover cable

asynchronous port

None of the above

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You are working with a network that has the network ID 192.168.10.0 and require nine subsets for your company and the maximum number of hosts. What subnet mask should you use?

255.255.255.192

255.255.255.224

255.255.255.240

255.255.255.248

255.255.255.252

Discussion

MCQ

The main difference between synchronous and asynchronous transmission is

the clocking is derived from the data in synchronous transmission

the clocking is mixed with the data in asynchronous transmission

the pulse height is different.

the bandwidth required is different

None of the above

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Computer Softwares

History and Generations

CPU and its components

Computer Languages

Computer Hardware

Input Devices

Output Devices

Computer Memory

Digital Logic Gate

Number System

Computer Codes

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Disk Operating System (DOS)

Database Systems

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Files and its types

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