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The School Network Story
The School Network Story
Think about your school's network. All the computers, tablets, and WiFi devices in your school building connect to each other - that's a LAN (Local Area Network). It's local, fast, and your school owns and controls it. Now, when your teacher accesses the BBC website or sends an email to another school across the country, they're using a WAN (Wide Area Network) - specifically, the Internet! WANs connect LANs across huge distances, using infrastructure owned by telecoms companies (like BT, Virgin Media). Your school's LAN is like the roads inside a theme park (small, private, fast). The Internet WAN is like the motorway system (huge, public, slower but connects everywhere)!
Deep Dive: Why Network Types Matter
Networks are classified by their geographical spread. Understanding LAN vs WAN is crucial because:
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Exam Tips - LAN and WAN
Most common exam questions:
- "Difference between LAN and WAN?" → Geographic spread (small vs large) AND ownership (private vs third-party)
- "Example of LAN?" → School network, home WiFi, office network
- "Example of WAN?" → The Internet, corporate multi-site network
- "Why is LAN faster?" → Shorter distances, data doesn't travel far
- "Why is WAN more expensive?" → Need to pay telecoms companies for infrastructure
- "Who owns LAN?" → The organization/individual using it
- "Who owns WAN infrastructure?" → Third-party telecoms providers (BT, Virgin, etc.)
Key comparison facts to memorize:
| Aspect | LAN | WAN |
|---|---|---|
| Size | Small (1 building) | Large (cities/countries) |
| Ownership | Private (one organization) | Third-party telecoms |
| Speed | Fast (1-10 Gbps) | Slower (10-1000 Mbps) |
| Cost | Low (one-time) | High (monthly fees) |
Common mistakes to avoid:
- Only mentioning size without ownership - ALWAYS mention BOTH!
- Saying "LAN is WiFi, WAN is cables" - NO! Both can be wired or wireless
- Forgetting The Internet is a WAN (the biggest one!)
- Not explaining WHY LAN is faster (short distances)
- Not explaining WHY WAN costs more (third-party infrastructure fees)
Perfect exam answer structure:
"Compare LAN and WAN" (4 marks):
LAN covers small geographical area like single building (1 mark).
WAN covers large geographical area like cities or countries (1 mark).
LAN is privately owned by one organization (1 mark).
WAN uses third-party telecommunications infrastructure (1 mark).
Now try it yourself
Quiz · Question 1 of 18
What does LAN stand for?
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This topic in real past papers
Every real exam question we've found on lan and wan, with a full worked answer.