Year 11 - Computing
Network security
The internet and web technologies
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will explore how data travels across the internet. They will explore how protocols define communication between devices and the purpose of common network protocols. They will investigate the risks to networks and the methods that can be used to protect a network.
Lesson Summary
You will learn to explain why network security is important and describe methods used to protect networks.
Key Notes
- Networks need security to protect data, devices, and users from threats and attacks.
- A range of methods is used to protect networks and reduce the risk of attacks.
Vocabulary To Learn
- firewall: a system that filters network traffic to protect against unauthorised flows of data in or out of the network
- user privileges: settings that control what actions a user is allowed to perform on a network
Common Mistakes To Avoid
- Network security just stops viruses, so it's only important for large organisations, not for individuals or small businesses.
3 Quick Questions (With Answers)
1. Describe the system or process from this lesson in clear steps.
Networks need security to protect data, devices, and users from threats and attacks. A range of methods is used to protect networks and reduce the risk of attacks.
2. Define this computing term and give one practical example. 'firewall'
a system that filters network traffic to protect against unauthorised flows of data in or out of the network. Add one real device or system example to prove understanding.
3. Correct this common computing misconception.
Mistake: Network security just stops viruses, so it's only important for large organisations, not for individuals or small businesses. Correction: Network security protects all users, not just large organisations. It prevents data theft, fraud, and service disruption. Individuals need protection from threats like phishing or ransomware.
More Lessons In This Unit
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