Lesson T4.1.2

T4.1.2 How computer systems communicate Quiz: KS3 Computing, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson T4.1.2, How computer systems communicate: 20 multiple choice questions for the KS3 Computing (National Curriculum), Unit 4: Computer systems, written with Revision Ninja.

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The 20 questions

  1. What is a protocol in computer networking?

    • Physical cable
    • Data packet
    • Network speed
    • Set of rules

  2. What device directs data packets between a home network and the internet?

    • Switch
    • Hub
    • Router
    • Scanner

  3. What device connects devices on a local area network and forwards packets?

    • Router
    • Switch
    • Server
    • Modem

  4. What is data split into when sent across the internet?

    • Packets
    • Files
    • Streams
    • Bytes

  5. What uniquely identifies a device on a network for routing data?

    • IP address
    • File path
    • URL link
    • MAC address

  6. What technology does Wi-Fi use to send data without cables?

    • Magnetic fields
    • Light pulses
    • Sound waves
    • Radio waves

  7. What is Bluetooth best suited for?

    • Long-range data
    • Global routing
    • Deep-sea cables
    • Short-range linking

  8. In a client-server network, what is the role of the server?

    • Blocking traffic
    • Providing resources
    • Requesting data
    • Printing pages

  9. Which identifier is most important in routing an email to the correct inbox?

    • Packet colour
    • Sender name
    • Destination address
    • File size

  10. Why do network systems use standard protocols?

    • Cheaper wiring
    • Smaller files
    • Faster printing
    • Universal compatibility

  11. What term describes a computer network that covers a single building or home?

    • Local area network
    • Wide area network
    • Personal area network
    • Metropolitan area network

  12. What term describes a computer network spanning a large geographical area across cities?

    • Local area network
    • Wide area network
    • Metropolitan area network
    • Personal area network

  13. What type of hardware identifier is permanently assigned to a network interface card?

    • IP address
    • MAC address
    • URL address
    • RAM address

  14. Which technology allows a software application to automatically request data from another system?

    • Internet protocol
    • Transmission control protocol
    • Hypertext transfer protocol
    • Application programming interface

  15. What does a network router use to determine the best path for data packets?

    • Routing table
    • Address cache
    • Lookup register
    • Switch directory

  16. What is a major hardware benefit of connecting computers together in a network?

    • Faster processing
    • Automatic coding
    • Unlimited storage
    • Resource sharing

  17. What is the main security risk of using an open public Wi-Fi network?

    • Data interception
    • Screen cracking
    • Battery drain
    • Hardware failure

  18. Which interface standard is commonly used to connect portable devices for file transfer?

    • Universal serial bus
    • Integrated drive electronics
    • High-definition multimedia
    • Advanced technology attachment

  19. What information must data packets carry to allow successful reassembly at their destination?

    • Voltage spikes
    • Power levels
    • Colour codes
    • Sequence numbers

  20. What network security device blocks unauthorised traffic while permitting approved connections?

    • Hub
    • Firewall
    • Repeater
    • Bridge

All KS3 Computing quizzes