Chapter Exam

Chapter-1 Computer Networking — Online MCQ Test

Q: In a network communication model, who sends the information?

Answer: B. Sender — The sender is the device or person that originates and transmits information in a network communication.

INFORMATION TECHNOLOGY · Grade 8 · CBSE(NCERT)

Practice Chapter-1 Computer Networking with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 8 INFORMATION TECHNOLOGY. This chapter covers: sender - receiver - transmission media - twisted pair - coaxial cable - fiber optic - LAN - WAN - MAN - network topology - router - switch - HTTP - FTP. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-1 Computer Networking — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 8 INFORMATION TECHNOLOGY — Chapter-1 Computer Networking, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is a computer network?

A. A group of computers connected together to share resources and information ✓
B. A single computer with multiple processors
C. A software application for playing games
D. A type of internet browser

Answer: A. A group of computers connected together to share resources and information
A computer network is a collection of computers linked by communication channels to share data, resources, and services.

In a network communication model, who sends the information?

A. Router
B. Sender ✓
C. Switch
D. Receiver

Answer: B. Sender
The sender is the device or person that originates and transmits information in a network communication.

What is the primary function of a router in a network?

A. To connect computers within a local area network
B. To direct data packets between different networks ✓
C. To store files and data
D. To increase internet speed

Answer: B. To direct data packets between different networks
A router is a networking device that forwards data packets between different networks, allowing communication between them.

Compare twisted pair and fiber optic cables in terms of speed:

A. Twisted pair is faster than fiber optic
B. Fiber optic cable can transmit data at much higher speeds than twisted pair ✓
C. Both have the same transmission speed
D. Speed depends only on the router used

Answer: B. Fiber optic cable can transmit data at much higher speeds than twisted pair
Fiber optic cables transmit data using light signals at gigabit speeds, making them significantly faster than twisted pair cables which use electrical signals.

Consider a network scenario: A sender transmits data using HTTP protocol over a coaxial cable to a receiver. If interference occurs, which component is most likely responsible for the signal degradation?

A. The HTTP protocol itself
B. The receiver's inability to process data
C. The coaxial cable's shielding limitations against external electromagnetic interference ✓
D. The sender transmitting too slowly

Answer: C. The coaxial cable's shielding limitations against external electromagnetic interference
While coaxial cables have better shielding than twisted pair, they are not immune to all electromagnetic interference, especially from powerful external sources.