ComputerScience Quiz 21

The unit processed by machine code instructions is called a _______

Word

Number

Bit

Byte

The machine code unit may be _________ depending on the computer architecture:

8 bit  or 16 bit

16 bit  or 32 bit

32 bit  or 64 bit

64bit  or  128 bit 

In a 32-bit word it can represent unsigned integer values ranging from

0 to 2³² -1

-2³¹ to 2³¹-1

0 to 2⁶⁴ -1

0 to 2³¹ -1 

In a 32-bit word it can represent signed integer values ranging from

0 to 2³² -1

-2³¹ to 2³¹-1

2³¹ to 2⁶⁴ -1

0 to 2³¹ -1 

A signal is an

Electric current

Electromagnetic field

Electronic current

Both a & b

A signal is used to convey data from

One place to another place

One system to another system

Both a & b

None of these

In case of PSTN, signaling between

A telephone user

The telephone network

Both a & b

None of these

A channel is defined as a path between

a.       Transistor and receiver

b.      Transmitter and transistor

c.       Transmitter and receiver

d.      None of these

The path of channel may be

Physical

Logical

Both a & b

None of these

The path of channel may be

Hard wired

Wireless

Both a & b

None of these

Noise of channel noise___________ the quality of information and data

Upgrades

Degrades

Both a & b

None of these

In channel , the information may not be

Reproduced

Reach the receiver at all

Both a & b

None of these

In channel noise, data by affecting communications and files of all types including

Images

Audio

Text

Programs

Telemetry

All of these

Information and data may be treated as a signal in either

Electrical form

Electromagnetic form

Both a & b

None of these

The noise may be classified as ______________ based upon the sources

Internal

External

Both a & b

None of these

The noise generated because of electricity or atmospheric disturbances is of the order of

300kHz

300MHz

300GHz

300Hz

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