Question Discussion & Solution

MCQ

Error detection at the data link level is achieved by

Bit Stuffing

Cyclic Redundancy Code

Hamming Code

Equalization

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MCQ

We can receive data either through our television aerial or down our telephone lines and display this data on our television screen. What is the general name given to this process?

Viewdata

Teletext

Telesoftware

Videotex

None of the above

Discussion

MCQ

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

Modem

Attenuation

Teleprocessor

None of the above

Discussion

MCQ

A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used.

500 Kbps

32 Kbps

8 Kbps

64 Kbps

None of the above

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MCQ

The slowest transmission speeds are those of

twisted-pair wire

coaxial cable

fiber-optic cable

microwaves

None of the above

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MCQ

Which of the following specifies the network address and host address of the computer?

The IP address

The TCP address

The subnet mask

The default gateway

None of the above

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Engineering

General

Medical

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Data Communication and Networking

Miscellaneous or General

Computer Basics

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

Operating System

Disk Operating System (DOS)

Database Systems

Computer Security and Viruses

Mixed

Computer Awareness

Files and its types

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