WJEC Eduqas GCSE Computer Science

Topic 3: Networks and Security: revision quiz and key terms

Free practice for Topic 3: Networks and Security in WJEC Eduqas GCSE Computer Science. It has 9 parts, listed below. Try the questions, then check the key terms.

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Question 1 · Multiple choice

Which device connects different networks together and forwards packets using IP addresses?

Question 2 · True or false?

Packet switching is generally more efficient for typical internet traffic than circuit switching.

Question 3 · Multiple choice

Which layer of the 7-layer OSI model deals with transmitting raw bits over a physical medium?

Question 4 · True or false?

In a mesh topology, every device must connect through a single central device.

Question 5 · Multiple choice

What is the main purpose of a DNS server?

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Key terms for Topic 3: Networks and Security

Bridge: Connects two separate network segments so they function as a single network.
LAN: A network that connects devices over a small geographical area, such as a single building.
Packet: A small unit of data sent across a network, containing a header and a payload.
Protocol: A set of rules that governs how data is transmitted between devices.
Router: A device that forwards data packets between networks using IP addresses.
Session layer: Manages establishment, maintenance and termination of a connection.
WAN: Connects devices across a large geographical area.
Wi-Fi: A set of protocols allowing devices to connect wirelessly to a network.

What Topic 3: Networks and Security covers

In RADevo this topic has a full topic test and a focused quiz for each part:

3.1 Network Characteristics
3.2 Data Packets and Switching
3.3 Network Topology
3.4 Network Hardware and Routing
3.5 Protocols
3.6 7-Layer OSI Model
3.7 The Internet
3.8 Cyber Threats
3.9 Protection Against Threats

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