Computer Internet & Networking Short Questions -5

Internet-5

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Question 1

Which of the following communications lines is best suited to interactive processing appJIcatjons?

A	)narrow band channel
B	simplex lines
C	mixed band channels
D	full duplex lines

Question 2

A remote batch-processing I operation in which data is solely input to a central computer would require

A	telegraphp line
B	) none of the above
C	mixed bad channel
D	all of above
E	simplex lines

Question 3

A band is always equivalent to

A	) a byte
B	a bit
C	100 bits
D	none of the above .

Question 4

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

A	interruption
B	progragation
C	scattering
D	attenuation

Question 5

Avalanche photodiode receivers can detect bits of transmitted data by receiving

A	200 photons
B	100 photons
C	) 2000 photons
D	300 photons'

Question 6

Communiction circuits that transmit data in both directions but not at the same time are operating in

A	a simplex mode
B	all the options
C	a full duplex mode
D	a half duplex mode

Question 7

An example of a medium speed, switched communications service is

A	series 1000
B	data phone 50
C	All of the above
D	ODD

Question 8

In communication satellite,multiple repeaters are known as

A	detector
B	modulator
C	transponders
D	stations

Question 9

While transmitting-odd-parity coded symbols, the number of zeros in each symbol is

A	odd
B	unknown
C	a and b both
D	even

Question 10

. Data communications monitors available on the software marked include

A	TOTAL
B	ENVIRON/1
C	BPL
D	Tel net

Question 11

An exajnple of an analog communication method is

A	laser beam
B	microwave
C	voice grade telephone line
D	none of the above
E	all of the above

Question 12

Number of bits per symbol used in Baudot code is .

A	7
B	9
C	8
D	5

Question 13

What is the main difference between DDCMP and SDLC?

A	DDCMP has a message header
B	DDCMP does not need special hardware to final the beginning of a message
C	SDLC has a IP address
D	SDLC does not use CRC

Question 14

An example of digital, ratherthan analog, communication is

A	DOS
B	DDD
C	WATS
D	DOT

Question 15

Terminals are required for

A	) real-time, batch processing & time-sharing
B	real time, timesharing & distributed message processing
C	real-time, time sharing & message switching
D	real time, distributed processing & manager inquiry

Question 16

The receive equilizer reduces delay distortions using a

A	gearshift
B	descrambler
C	tapped delay lines
D	difference engine

Question 17

Ina synchronous modem, the receive equilizer is known as

A	impariment equilizer
B	adaptive equilizer
C	statistical equilizer
D	compromise equilizer

Question 18

The channel in the data-communication model can be

A	postal mail services
B	telephone lines
C	none of the above
D	radio lines
E	all the above

Question 19

A data terminal serves as an

A	Effector
B	sensor
C	neither a nor b
D	both a and b

Question 20

Which of the following transmission systems provide the highest data rate to in individual device?

A	telephone lines
B	computer bus
C	voice and mode
D	lease lines

Question 21

A protocol is a set of rules governing a time sequence of events that must take place

A	between modems
B	between an interface
C	between peers
D	across an interface

Question 22

__ is used in operating system to separate mechanism from policy

A	Two level implementation
B	Single level implementation
C	Multi level implementation
D	All of the above

Question 23

The operating system creates.

A	Virtual computers
B	All the above
C	Virtual device
D	Virtual space

Question 24

from the physical computer__shares characteristics with both hardware and software

A	All the above
B	Software
C	Data
D	Operating system

Question 25

Multiprogramming systems

A	Are easier to develop than single programming systems
B	Execute more jobs in the same time period
C	Execute each job faster
D	Are used only one large mainframe computers.

Question 26

Multiprogramming systems

A	Are easier to develop than single programming systems
B	Execute more jobs in the same time period
C	Execute each job faster
D	Are used only one large mainframe computers.

Question 27

Multiprogramming systems

A	Are easier to develop than single programming systems
B	Execute more jobs in the same time period
C	Execute each job faster
D	Are used only one large mainframe computers.

Question 28

Multiprogramming systems

A	Are easier to develop than single programming systems
B	Execute more jobs in the same time period
C	Execute each job faster
D	Are used only one large mainframe computers.