Question # 1

What is the main difference between DDCMP and SDLC.

Choose an answer

DDCMP does not need spectral hardware to final the beginning of a message

DDCMP has a message header

SDLC has a IP address

SDLC does not use CRC

In OSI network architecture the routing is performed by

Choose an answer

Network layer

Data link layer

Transport layer

Session layer

How many OSI layers are covered in the X-25 standart.

Choose an answer

Two

Three

Seven

Six

The interactive transmission of data with in a time sharing system may be best suited to.

Choose an answer

Simplex lines

Half duplex lines

full duplex lines

Biflex lines

the loss in signal power as light travels donw the fiber is called.

Choose an answer

Attenuation

Progragation

scathering

Interruption

Which of the following might be used by a company to satisfy its growing communications needs.

Choose an answer

Front and processor

Multiplexer

Controller

All of the above

An example of digital rather than analog communication is

Choose an answer

DDD

DDS

DDT

WATS

In OSI network architecture the dialogue control and toke management are responsibility of

Choose an answer

Session layer

Network layer

Transport layer

None

Which of the following communication modes support two way traffic but in only one direction at a time.

Choose an answer

Simplex

Half duplex

Three quarters duplex

All of the above

Which of the following is not a transmission medium.

Choose an answer

Telephone lines

Coaxial cables

Modem

Micro wave systems

Which of the following performs modulation and demodulation?

Choose an answer

Fiber optics

Satellite

Coaxial cable

Modern

Which of the following transmission system provide the highest data rate to in individual device.

Choose an answer

Computer bus

Telephone lines

Voice and mode

Lease lines

Terminal are required for

Choose an answer

Real time batch processing and time sharing.

Real time time sharing and distributed message processing.

Real time distributed processing and manager inuiry

Real time time sharing and message switching

Which of the following is an advantage to using fiber optics data transmission.

Choose an answer

Resistance to data theft

Fast data transmission rate

Low noise level

All of above

Which of the following is considered a broad band communication channel.

Choose an answer

Coaxial cable

Fiber optics cable

Microwave circuits

All of above

Number of bits per symbol used in biodot code is.

Choose an answer

5

7

8

9

Data communications monitors available on the software marked include.

Choose an answer

ENVIRON/1

TOTAL

BPL

Telnet

An example of an analog communication method is.

Choose an answer

Laser beam

Micro wave

Voice grade telephone line

All of the above

More Classes

Other Links

PPSC Computer Science Chapter 12 Computer Networking Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer