Data and Digital Communications MCQ

Test your knowledge of data and digital communication, including computer networks, digital signals, digital transmission, data communications, among others, with this online multiple choice quiz. See how well you understand the basics of data and digital communications. . Challenge yourself to get the highest score. Twenty (20) MCQ questions from our test bank will be randomly shown for every attempt. Passing mark for this test is 70%.

Objectives: To provide readers with a comprehensive multiple choice quiz on data and digital communication

Welcome to Data and Digital Communications. The quiz will randomly run 20 questions from Data and Digital Communications which you have to answer in 10 minutes.

After 10 minutes, your quiz will automatically be submitted and scored.

You can retake the quiz as many times as you want and a different set of questions will be given. The answers will also be randomly arrange.

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A medium access control technique for multiple access transmission media is ______

aloha

attenuation.

carrier

amplitude

In OSI reference model, which of the following layer provides error-free delivery of data?

Presentation layer.

Transport layer.

Network layer.

Session layer.

Protocols in which the sender waits for a positive acknowledgement before advancing to the next data item are often called ___________

ARQ.

PRP

PPR

ARS

collection of interconnected networks is called as __________

interface.

internet.

intranet.

topology.

Which of the following layer protocols are responsible for user and the application programme support such as passwords, resource sharing etc?

Layer 6 protocols

Layer 4 protocols

Layer 5 protocols

Layer 7 protocols

__________ is the loss of energy as the signal propagates outward.

Baud

Distortion

Noise.

Attenuation

Print server uses spool which is a ______ that holds data before it is send to the printer

queue.

node

ring

buffer

Polynomial code is also known as __________

DRC

ARC

BRC.

CRC

The application layer of a network ________

consists of software being run on the computer connected to the network

defines the users port into the network

allows communication channel to be shared.

establishes, maintains and terminates virtual circuits

Protocols in which the sender sends one frame and then waits for an acknowledgement before proceeding are called __________

sliding window

stop and wait

analog.

frame buffer.

Which layer of OSI determines the interface of the system with the user?

Application

Network

Physical

Data link.

Which layer of OSI model is responsible for creating and recognizing frame boundaries?

Data link layer

Network layer

Physical layer.

Transport layer

What is the maximum data capacity of STP?

100 mbps

1000 mbps

10 mbps.

10000 mbps

ISDN is an example of _______ network

ring based.

circuit switched

frame relay

packet switched.

_____________ specifies a star topology featuring a central hub and unshielded twisted-pair wire as the medium.

10 Base 2.

10 Base 8.

10 Base T.

10 Base 5

X.25 is an example of __________ network

packet switched

circuit switched

frame relay.

ring based.

A station in a network forwards incoming packet,s by placing them on its shortest output queue. What routing algorithm is being used?

Delta routing

Flooding.

Static routing

Hot potato routing

Devices on one network can communicate with devices on another network via __________

utility server.

printer server

gateway

file server

Terminators are used in ________ topology

bus

ring

star

irregular.

Which of the following condition is used to transmit two packets over a medium at the same time?

Contention

Collision.

Synchronous.

Asynchronous

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