Lesson 1.3.3b

1.3.3b LANs, WANs, switching, network hardware, security and client-server Quiz: OCR Computer Science, Unit 3

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 1.3.3b, LANs, WANs, switching, network hardware, security and client-server: 20 multiple choice questions for the OCR Computer Science (H446), Unit 3: Exchanging data, written with Revision Ninja.

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The 20 questions

  1. Which type of network covers a small geographical site using privately owned infrastructure?

    • WAN
    • SAN
    • MAN
    • LAN

  2. What type of network covers a large geographical area using third-party telecommunications infrastructure?

    • PAN
    • WAN
    • WLAN
    • LAN

  3. Which switching method divides data into small chunks that travel along independent paths?

    • Message switching
    • Circuit switching
    • Packet switching
    • Line switching

  4. Which switching method establishes a dedicated, continuous physical connection for the duration of communication?

    • Message switching
    • Circuit switching
    • Virtual switching
    • Packet switching

  5. Which hardware device forwards data packets between different networks based on IP addresses?

    • Switch
    • Bridge
    • Hub
    • Router

  6. Which hardware device connects nodes within a LAN and directs data using MAC addresses?

    • Gateway
    • Router
    • Modem
    • Switch

  7. Which hardware component provides a device with a physical network connection and unique MAC address?

    • Router
    • WAP
    • NIC
    • GPU

  8. Which network model relies on a central node to manage file access and security rights?

    • Client-server
    • Ring
    • Mesh
    • Peer-to-peer

  9. An office network sends data to a specific device rather than broadcasting to all devices. Which device is used?

    • Hub
    • Repeater
    • Splitter
    • Switch

  10. A user wants to connect a home network to the internet provided by an ISP. Which device is required?

    • Router
    • Switch
    • WAP
    • Hub

  11. A school blocks access to specific websites and caches downloaded pages for students. Which server performs this?

    • File server
    • Proxy server
    • DNS server
    • Web server

  12. A company wants to prevent unauthorised incoming network traffic from reaching its internal network. What software or hardware is used?

    • Switch
    • Gateway
    • Firewall
    • NIC

  13. Two networks using entirely different communication protocols need to transfer data. Which device translates between them?

    • Repeater
    • Gateway
    • Bridge
    • Switch

  14. A system administrator restricts network access so only recognised physical device addresses can connect. What is this security method?

    • Port forwarding
    • IP spoofing
    • MAC filtering
    • Packet filtering

  15. During packet switching, where are the source and destination IP addresses stored within the packet?

    • Packet header
    • Checksum
    • Packet trailer
    • Packet payload

  16. A home user connects their laptop wirelessly to a wired LAN infrastructure. Which device enables this wireless connection?

    • Wireless access point
    • Gateway
    • Network interface card
    • Ethernet switch

  17. What is a major advantage of packet switching over circuit switching for general data traffic?

    • Efficient bandwidth usage
    • Simpler packet reassembly
    • Guaranteed constant bandwidth
    • Lower packet latency

  18. What key problem occurs during circuit switching if a physical connection line is damaged mid-transmission?

    • Packets reroute automatically
    • Communication terminates
    • Packets duplicate automatically
    • Speed increases instantly

  19. In a peer-to-peer network model, how are network administration and file sharing handled?

    • Controlled by gateway
    • Managed by server
    • Distributed among nodes
    • Handled by ISP

  20. Why are MAC addresses considered permanent identifiers compared to dynamic IP addresses?

    • Configured by router
    • Hardcoded into hardware
    • Generated by OS
    • Assigned by ISP

All OCR Computer Science quizzes