The internet and the world wide web

Worked examples (9)

• 1Define the internet for a 2-mark question
• 2Separate the internet from the World Wide Web
• 3State the purpose of DNS
• 4Describe the sequence from typing a name to loading a page
• 5Explain how a packet reaches a server on another continent
• 6Reason about the symptoms of a DNS failure
• 7Classify statements as internet or World Wide Web
• 8Analyse the consequences of the internet having no single owner
• 9Evaluate the claim that DNS is the internet's weak point

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

Worked examples (9)

• 1Label the parts of a URL
• 2State what a web server does
• 3Give the difference between HTTP and HTTPS
• 4Describe everything that happens when a link is clicked
• 5Justify HTTPS for an online shop
• 6Explain why HTML is not a programming language
• 7Diagnose which component has failed
• 8Compare the roles of DNS, the ISP and the web server
• 9Evaluate making HTTPS compulsory for every website

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

Worked examples (9)

• 1State the format of an IPv4 address
• 2State the format of an IPv6 address
• 3Decide whether an address is valid
• 4Derive the size of the IPv4 address space
• 5Abbreviate an IPv6 address correctly
• 6Explain why an addressing standard is necessary
• 7Explain why IPv6 will not run out as IPv4 did
• 8Compare IPv4 and IPv6
• 9Evaluate the slow migration to IPv6

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 — 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 — extended open-response

Worked examples (9)

• 1Describe what a modem does
• 2Separate the router from the switch
• 3State what a wireless access point does
• 4Explain the advantages of a switch over a hub
• 5Describe how the components are combined at home
• 6Identify which component has failed
• 7Justify separate devices for a new office
• 8Compare a home installation with a business one
• 9Evaluate the all-in-one box as a design

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