Menu

Question Discussion & Solution

MCQ

Q.

In ______, the change or lack of change in the level of the voltage determines the value of the bit.

A

NRZ-I

B

NRZ-L

C

both (a) and (b)

D

neither (a) nor (b)

Community Discussion

No discussions yet. Be the first to start!

You must be logged in to participate in the discussion.

Login to Discuss

Similar Questions

MCQ

1.

The most common technique to change an analog signal to digital data is called __________.

A

PAL

B

PCM

C

sampling

D

none of the above

Discussion

MCQ

2.

________ conversion is the representation of analog information by an analog signal.

A

Digital-to-analog

B

Analog-to-analog

C

Analog-to-digital

D

Digital-to-digital

Discussion

MCQ

3.

In ______ transmission, we send 1 start bit (0) at the beginning and 1 or more stop bits (1s) at the end of each byte.

A

synchronous

B

asynchronous

C

isochronous

D

none of the above

Discussion

MCQ

4.

In _______encoding, we use three levels: positive, zero, and negative

A

unipolar

B

bipolar

C

polar

D

none of the above

Discussion

MCQ

5.

How many carrier frequencies are used in BFSK?

A

2

B

1

D

none of the above

Discussion

More Data Communication and Computer Network Topics

Data Communication and Computer Network Basics

30 MCQs

Network Models

47 MCQs

Data and Signals

27 MCQs

Transmission

74 MCQs

Multiplexing

17 MCQs

Transmission Media

82 MCQs

Error Detection and Correction

27 MCQs

Data

298 MCQs

Network Addressing

76 MCQs

Network Layer Internet Protocols

19 MCQs

Nework Layer Routing

68 MCQs

Process

71 MCQs

Congestion Control and Quality of Service

40 MCQs

Domain Name System

26 MCQs

Remote Logging, Mail and File Transfer

43 MCQs

WWW and HTTP

28 MCQs

Network Management

20 MCQs

Multimedia

30 MCQs

Network Security

85 MCQs

Mixed

10 MCQs

Introduction to Computer Networks

0 MCQs

Networks Layers and Models

0 MCQs

Network Devices

0 MCQs

Fundamentals of Mobile Communication

0 MCQs