Network security

Worked examples (9)

• 1Name the three techniques and match each to a job
• 2Separate authentication from authorisation
• 3Describe how a firewall protects a network
• 4Explain why two-factor authentication is stronger than a password
• 5Recommend physical security for a described site
• 6Apply the principle of least privilege
• 7Analyse the limits of a firewall
• 8Evaluate biometric authentication for a school
• 9Design a layered security scheme for a scenario

Model answers (9)

• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — extended open-response

Worked examples (9)

• 1State two security issues, precisely
• 2Separate data in transit from data at rest
• 3Explain why one cloud password is so valuable to an attacker
• 4Explain why synchronisation is not a backup
• 5Advise a school moving pupil records to the cloud
• 6Apply 5.2.2 to storage that is not the cloud
• 7Analyse the risk of the provider itself
• 8Explain the jurisdiction problem
• 9Evaluate a full migration to cloud storage

Model answers (9)

• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — extended open-response

Worked examples (9)

• 1Classify attacks as technical or behavioural
• 2Define social engineering and give examples
• 3Distinguish phishing from pharming
• 4Explain why an unpatched system becomes more vulnerable over time
• 5Diagnose a USB-device attack
• 6Advise a traveller about open wireless networks
• 7Analyse the risk from unmanaged digital devices
• 8Argue the value of training against technical measures
• 9Diagnose several attacks in one scenario

Model answers (9)

• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — extended open-response

Worked examples (9)

• 1Name protection measures across the life of a system
• 2Explain what an audit trail is and why it is useful
• 3Explain why someone else reviews the code
• 4Apply the secure-coding rule to a login routine
• 5Argue for security at the design stage
• 6Explain modular testing and its link to decomposition
• 7Harden an operating system for a described server
• 8Explain why several measures are used together
• 9Design a protection plan for a new system

Model answers (9)

• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — extended open-response

Worked examples (9)

• 1Name the four methods and what each finds
• 2Explain what makes hacking ethical
• 3Describe how a penetration test is carried out
• 4Compare automated tools with a human tester
• 5Find the weaknesses a scan would miss
• 6Distinguish ethical hacking from criminal hacking
• 7Analyse the limits of a clean penetration test report
• 8Recommend a proportionate approach for a small business
• 9Design a vulnerability identification programme

Model answers (9)

• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — short open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — open-response
• ✓Model answer — Edexcel 4CP0 Paper 1 style — extended open-response