Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Chapter: 3
Q101:
Data is sent over the network in units called ________.
A. Files
B. Packets
C. Clusters
D. Bytes
Correct Answer:
B
Chapter: 3
Q102:
The speed of data transmission is measured in _______.
A. Hertz
B. Bytes
C. Kilobytes
D. Bits per second
Correct Answer:
D
Chapter: 3
Q103:
In communication terminology, the medium used to carry signals is called _______.
A. Protocol
B. Device
C. Transmission medium
D. Control panel
Correct Answer:
C
Chapter: 3
Q104:
Which of the following is an example of simplex communication?
A. Telephone call
B. Walkie-talkie
C. Keyboard to computer
D. Video conference
Correct Answer:
C
Chapter: 3
Q105:
In which type of communication do sender and receiver transmit data simultaneously?
A. Simplex
B. Half Duplex
C. Full Duplex
D. Serial
Correct Answer:
C
Chapter: 3
Q106:
Data communication systems must be _______ and cost-effective.
A. Secure
B. Fast
C. Wireless
D. Encrypted
Correct Answer:
A
Chapter: 3
Q107:
________ is the device that receives the message in a communication system.
A. Receiver
B. Modem
C. Protocol
D. Router
Correct Answer:
A
Chapter: 3
Q108:
Transmission of data in one direction at a time is called _______.
A. Full duplex
B. Simplex
C. Half duplex
D. Unidirectional
Correct Answer:
C
Chapter: 3
Q109:
Optical fiber is an example of a _______ transmission medium.
A. Guided
B. Unguided
C. Digital
D. Analog
Correct Answer:
A
Chapter: 3
Q110:
Which of the following is NOT a function of protocols in data communication?
A. Error detection
B. Addressing
C. Formatting documents
D. Data compression
Correct Answer:
C
Chapter: 3
Q111:
Which component initiates the message in a data communication system?
A. Receiver
B. Router
C. Sender
D. Modem
Correct Answer:
C
Chapter: 3
Q112:
In data communication, timing refers to ________.
A. Frequency of voltage
B. Speed and sequence of data transmission
C. Type of encoding
D. Distance between nodes
Correct Answer:
B
Chapter: 3
Q113:
A key characteristic of effective data communication is _______.
A. Distance
B. Error rate
C. Flexibility
D. Delivery
Correct Answer:
D
Chapter: 3
Q114:
Data is considered delivered if it reaches the _______ accurately and in time.
A. Switch
B. Hub
C. Receiver
D. Protocol
Correct Answer:
C
Chapter: 3
Q115:
Digital signals consist of _______ values.
A. Infinite
B. Continuous
C. Discrete
D. Analog
Correct Answer:
C
Chapter: 3
Q116:
Which topology uses a central device to connect all computers?
A. Bus
B. Ring
C. Star
D. Mesh
Correct Answer:
C
Chapter: 3
Q117:
The main purpose of error detection is to ensure ________.
A. Encoding
B. Accurate delivery of data
C. Speed
D. Connectivity
Correct Answer:
B
Chapter: 3
Q118:
The quality of data communication depends on
A. Number of users
B. Protocols and media used
C. Color settings on screen
D. Type of router used
Correct Answer:
B
Chapter: 3
Q119:
Communication between two computers is possible only if both use the same ________.
A. Transmission medium
B. Operating system
C. Protocol
D. Monitor
Correct Answer:
C
Chapter: 3
Q120:
________ allows multiple computers to share data and resources.
A. Programming
B. Data communication
C. Compiler
D. Protocol
Correct Answer:
B