Free MCQ practice

PSEB Class 12 Computer Science Computer Networks Practice Test

Practice PSEB Class 12 Computer Science Computer Networks with a free 20-question MCQ test. Review networking concepts, the seven OSI layers, hubs, switches, routers, repeaters, bridges, gateways, communication media, transmission modes, printer sharing, TCP/IP, FTP, PPP, SMTP, POP/IMAP, HTTP, MAC addresses, and IP addresses. Check your result instantly, read detailed explanations, and repeat the test for focused revision. No registration is required.

Computer Networks Practice Test

20 questions. No registration required.

PSEB Class 12 Computer Networks Practice

Computer Networks introduces the systems, devices, communication media, protocols, and addressing concepts used to connect computers and exchange data. This Class 12 Computer Science practice test provides a focused MCQ-based revision activity for students reviewing the main concepts of computer networking.

Questions from this topic may require students to identify an OSI layer, distinguish a hub from a switch or router, select a suitable communication medium, compare simplex, half-duplex, and full-duplex transmission, match a protocol with its purpose, or distinguish a MAC address from an IP address.

Use this 20-question practice test to check your understanding before broader Class 12 Computer Science revision. After completing the test, review every incorrect or uncertain answer, identify the OSI layer, network device, communication medium, transmission mode, protocol, or addressing concept that caused difficulty, and repeat the topic after revision.

What to Review for Computer Networks

Focus on OSI layers, network devices, communication media, transmission modes, protocols, and network addresses.

Networks and the OSI Model

Review the introduction to computer networks, the need for networking, and the seven OSI layers: Physical, Data-Link, Network, Transport, Session, Presentation, and Application. Practice matching each layer with its position in the OSI model.

Network Devices and Communication Media

Practice hubs, switches, routers, repeaters, bridges, gateways, and brouters. Review twisted pair cable, coaxial cable, optical fibre, infrared, NFC, Bluetooth, Wi-Fi, radio waves, microwaves, and satellite communication.

Transmission Modes, Protocols, and Addresses

Review simplex, half-duplex, and full-duplex communication, printer sharing, TCP/IP, FTP, PPP, SMTP, POP/IMAP, HTTP, and the difference between MAC addresses and IP addresses.

Key Computer Networks Concepts to Remember

Before repeating the test, make sure you can identify which networking concept is involved in each question. Computer Networks questions become easier when students separate network layers, devices, media, transmission modes, protocols, and addressing.

  • Computer network
  • Need of networking
  • OSI model
  • Physical Layer
  • Data-Link Layer
  • Network Layer
  • Transport Layer
  • Session Layer
  • Presentation Layer
  • Application Layer
  • Hub
  • Active hub
  • Passive hub
  • Intelligent hub
  • Switch
  • Router
  • Functions of a router
  • Repeater
  • Bridge
  • Types of bridges
  • Gateway
  • Brouter
  • Guided communication media
  • Twisted pair cable
  • UTP
  • STP
  • Coaxial cable
  • Optical fibre
  • Unguided communication media
  • Infrared
  • NFC
  • Bluetooth
  • Wi-Fi
  • Radio waves
  • Microwaves
  • Satellite communication
  • Simplex mode
  • Half-duplex mode
  • Full-duplex mode
  • Printer sharing
  • TCP/IP
  • FTP
  • PPP
  • SMTP
  • POP
  • IMAP
  • HTTP
  • MAC address
  • IP address

Common Mistakes in Computer Networks Questions

Computer Networks questions often use related technical terms for different networking functions. When reviewing your test result, check whether one of these common mistakes affected your answer:

  • Confusing a computer network with the Internet
  • Mixing up the order of the seven OSI layers
  • Confusing the Data-Link Layer with the Network Layer
  • Mixing up the Transport and Session layers
  • Confusing a hub with a switch
  • Using switch and router as exact synonyms
  • Confusing a repeater with a router
  • Mixing up a bridge and a gateway
  • Ignoring the function of a network device
  • Confusing guided and unguided media
  • Mixing up UTP and STP cables
  • Confusing coaxial cable with optical fibre
  • Assuming Bluetooth and Wi-Fi are identical technologies
  • Confusing infrared with radio-wave communication
  • Mixing up microwaves and satellite communication
  • Confusing simplex with half-duplex communication
  • Using half-duplex and full-duplex as exact synonyms
  • Confusing FTP with HTTP
  • Mixing up SMTP and POP/IMAP
  • Assuming every protocol performs the same communication task
  • Confusing a MAC address with an IP address
  • Memorising protocol names without understanding their purpose

How to Use This Computer Networks Practice Test

Turn a 20-question MCQ test into a focused Class 12 Computer Science revision session.

Complete All 20 Questions

Answer the full test without checking notes so that uncertain Computer Networks concepts are easier to identify.

Identify the Networking Topic

Decide whether the question concerns an OSI layer, network device, communication medium, protocol, or address.

Review the Explanation

Read explanations for incorrect answers and correct answers that were based on guessing.

Revise and Repeat

Review the difficult network layer, device, medium, protocol, or addressing concept and complete the test again.

Computer Networks Practice FAQ

Common questions about this PSEB Class 12 Computer Science Computer Networks practice test.

Yes. The Computer Networks practice test is free to use and does not require registration, payment, or a subscription.

The test contains 20 multiple-choice questions with four answer options, instant result checking, and detailed explanations.

Review networking concepts, the seven OSI layers, network devices, guided and unguided communication media, transmission modes, network sharing, communication protocols, MAC addresses, and IP addresses.

Review the Physical, Data-Link, Network, Transport, Session, Presentation, and Application layers. Make sure you remember their correct order in the OSI model.

Review hubs, switches, routers, repeaters, bridges, gateways, and brouters. Focus on the main purpose and function of each networking device.

Review twisted pair cable, UTP, STP, coaxial cable, optical fibre, infrared, NFC, Bluetooth, Wi-Fi, radio waves, microwaves, and satellite communication.

Review TCP/IP, FTP, PPP, SMTP, POP/IMAP, and HTTP. Focus on recognising the main communication purpose associated with each protocol.

A MAC address is associated with a network interface at the hardware addressing level, while an IP address is used for logical addressing and communication across IP networks. They perform different addressing roles.

Yes. Review the explanations, revise difficult Computer Networks concepts, and complete the test again whenever you need additional practice.

No. The questions are original PSEB-style educational practice material. They are not copied from official Punjab School Education Board examination papers.