Why is "Listing benefits without explaining or giving examples." a common mistake in Benefits of using a LAN/home network?

Why it happens: Time pressure. How to avoid it: Every benefit needs: name + explanation + concrete example. Without these, marks are capped at half. Source: Edexcel 4IT1 examiner reports.

Why is "Discussing only benefits without acknowledging drawbacks." a common mistake in Benefits of using a LAN/home network?

Why it happens: Question asked about benefits. How to avoid it: If asked to EVALUATE or DISCUSS, address both sides. Pure benefit lists cap in mid-range.

Why is "Saying 'saves money' without quantifying." a common mistake in Benefits of using a LAN/home network?

Why it happens: Easier to make general claims. How to avoid it: Quantify savings where possible. 'Saves £100/month on internet' is stronger than 'saves money'.

Why is "Focusing only on cost savings, ignoring productivity/collaboration benefits." a common mistake in Benefits of using a LAN/home network?

Why it happens: Cost is most visible. How to avoid it: LAN benefits also include collaboration, security, IT manageability, scalability — these often exceed cost savings.

Why is "Saying 'Wi-Fi' when meaning 'LAN'." a common mistake in Benefits of using a LAN/home network?

Why it happens: Common usage. How to avoid it: Wi-Fi is the WIRELESS PART of a LAN. A LAN can be all-wired, all-wireless, or hybrid. Use the right term.

ConnectivityPearson Edexcel IGCSE ICT 4IT1

Benefits of using a LAN/home network

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Benefits of a LAN / Home Network — Edexcel IGCSE ICT (4IT1) Detailed Notes

Sharing internet, files, printers, storage. Centralised security, backup and management. Collaboration and entertainment. The practical advantages that justify network setup costs.

What you’ll learn

Mapped to the Pearson Edexcel IGCSE 4IT1 syllabus (2026 onwards).

Identify the key benefits of a LAN/home network.
Distinguish cost-saving benefits from operational/collaborative benefits.
Calculate cost savings from resource sharing.
Discuss drawbacks and how to mitigate them.
Recommend a network setup for a household or small business.

Centralisation — operational efficiency

Manage many devices from one place.

Centralised backup.

All devices back up to one location (server, NAS or cloud).
One place to verify backups; restore is fast.
Cheaper than per-device backup.

Centralised security.

One firewall protects all devices on the LAN.
One antivirus management console manages all endpoints.
Content filtering applied once for all users (parental controls, business web filter).

Centralised user management.

One account per user, with permissions managed in one place.
Single Sign-On (SSO) gives access to multiple apps.
Easy onboarding/offboarding of staff.

Centralised software deployment.

IT department installs apps centrally.
Updates pushed automatically.
Reduces support load.

Collaboration — modern work depends on it

Real-time editing, messaging, calendars.

Real-time co-editing.

Google Docs, Microsoft 365 — multiple users edit one document at once.
Built on the LAN/cloud — wouldn't work without networked storage.

Instant messaging and video calls.

Teams, Slack, Zoom for staff communication.
Replaces email for quick exchanges.
Includes video calls without needing public meeting platforms.

Shared calendars and scheduling.

Outlook calendar, Google Calendar.
Book meetings, see availability, share rooms/resources.

Shared project tools.

Asana, Trello, Jira on the LAN/cloud.
Visible task lists, deadlines, dependencies.

Common databases.

CRM (Salesforce, HubSpot), inventory, accounting.
Real-time data accessible to all authorised users.

Multi-device access

Phones, tablets, TVs, smart-home devices all connected.

Modern households and offices have many internet-connected devices:

Laptops, desktops.
Smartphones, tablets.
Smart TVs, streaming devices.
Smart speakers, voice assistants.
Security cameras, doorbells.
Smart thermostats, lights.
Wearables (fitness trackers, smartwatches).

A home/office network supports them all through one Wi-Fi infrastructure. Devices interact:

Phone music plays on speakers.
Phone photos appear on Smart TV.
Front-door camera sends notifications to phone.
Voice assistant controls lights.

The LAN is the invisible plumbing that makes this work.

Drawbacks of a LAN

Setup cost, maintenance, single point of failure, security.

Initial setup cost. Hardware + cabling + installation + IT expertise. £500–£10,000+ depending on size.

Ongoing maintenance. Updates, troubleshooting, security patches. Small businesses may need external IT support contracts.

Single points of failure. Router or server failure can take down whole office. Requires redundancy / backup plans.

Security risks. A networked system has more attack surface. One infected device can spread malware. Misconfigured Wi-Fi can leak data.

Mitigations:

Phase setup; use cloud services to reduce hardware.
Outsource IT to managed services for small businesses.
UPS + redundant internet for critical equipment.
Strong security: firewall, antivirus, MFA, staff training.

For any business >5 people, the BENEFITS far exceed the drawbacks.

How it’s examined

Paper 1: Identify benefits (4–5 marks); calculate savings (4–6 marks); explain benefits with examples (6–8 marks); discuss drawbacks (4–6 marks); recommend LAN setup (8–10 marks).

Frequent stems: 'State TWO benefits of a home network…', 'Explain how a LAN saves cost in…', 'Discuss the advantages and disadvantages…'

Sources: Pearson Edexcel International GCSE in Information and Communication Technology (4IT1) Specification — Issue 3; Edexcel 4IT1 Examiner Reports (2022–2024). Last reviewed 2026-05-19.

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Step-by-step worked examples — Benefits of using a LAN/home network

Step-by-step solutions to past-paper-style questions on benefits of using a lan/home network, written exactly the way a tutor would explain them at the board.

1Identify the LAN benefit being described
Getting started• Edexcel 4IT1 style — short-answer (5 marks)• benefits, AO1
Question
Name the LAN benefit: (a) Multiple devices use ONE internet connection. (b) Family members access the same photo library. (c) Each device can print to a single printer. (d) Devices auto-save to a central backup. (e) Internet sites blocked at the network level — once for all devices.
Step-by-step solution
1. Step 1
  Match the scenario to the standard LAN benefit term.
Answer
(a) Internet connection sharing.

(b) File sharing.

(c) Printer sharing.

(d) Centralised backup.

(e) Centralised security / content filtering.
Examiner tip
Most network benefits centre on SHARING (resources) or CENTRALISATION (security, backup, control).
2Identify whether each scenario is a cost-saving benefit
Getting started• Edexcel 4IT1 style — short-answer (4 marks)• cost-saving, AO1, AO2
Question
State whether each is a COST-SAVING benefit of a LAN: (a) One printer shared between 4 family members. (b) Each device installs its own antivirus. (c) One internet subscription used by all devices. (d) A central NAS used as backup for 5 PCs.
Step-by-step solution
1. Step 1
  Cost saving = sharing reduces total spend vs duplication.
Answer
(a) Yes — saves buying 4 printers.

(b) No — antivirus is per-device (though business licences may bulk-discount).

(c) Yes — saves paying for multiple internet plans.

(d) Yes — saves buying 5 separate external HDDs.
Examiner tip
Sharing physical equipment (printer, NAS, modem) is the clearest cost saving. Software is mostly per-user or per-device.
3Identify collaboration benefits
Building confidence• Edexcel 4IT1 style — short-answer (5 marks)• collaboration, AO1, AO2
Question
Identify the collaboration benefit: (a) Multiple people edit one document at the same time. (b) Team chats and video calls between desks. (c) Calendar shared across all staff. (d) Single sign-on across all apps. (e) Shared project folder visible to the whole team.
Step-by-step solution
1. Step 1
  Each enables a specific kind of collaboration.
Answer
(a) Real-time co-editing (Google Docs, Microsoft 365).

(b) Instant messaging / video conferencing (Teams, Slack, Zoom).

(c) Shared calendar / scheduling.

(d) Single Sign-On (SSO).

(e) Shared file storage (file server, NAS, cloud drive).
Examiner tip
Modern LANs are about collaboration as much as sharing — real-time co-editing has transformed how teams work.
4Calculate cost saving from sharing
Building confidence• Edexcel 4IT1 style — calculation (5 marks)• cost-saving, AO1, AO2
Question
A family of 4 considers two options:

Option A: Each person has their OWN internet (£25/month/person), printer (£60 each), external HDD (£50 each).

Option B: Shared home network — 1 internet plan (£40), 1 network printer (£150), 1 NAS for backup (£250).

Calculate (a) Option A total over 1 year, (b) Option B total over 1 year, (c) saving from sharing.
Step-by-step solution
1. Step 1
  Sum both options' one-time + ongoing costs.
Answer
Option A (no LAN):

4 × £25 × 12 = £1,200/year internet.

4 × £60 = £240 printers (one-off).

4 × £50 = £200 HDDs (one-off).

Year 1 total = £1,640.

Option B (shared LAN):

£40 × 12 = £480/year internet.

£150 printer (one-off).

£250 NAS (one-off).

Year 1 total = £880.

(c) Saving = £1,640 − £880 = £760 in Year 1.

In subsequent years, the saving is £25 × 4 × 12 − £40 × 12 = £720/year ongoing.
Examiner tip
Sharing pays back fast. Over 5 years, this household would save ~£3,600 — significant.
5Calculate office printer saving
Building confidence• Edexcel 4IT1 style — calculation (5 marks)• cost-saving, AO1, AO2
Question
An office with 20 employees can have either:

20 individual printers at £80 each + £30/year ink each = total per year per device.

1 network multifunction printer £600 + £400/year toner total.

Calculate the saving over 5 years.
Step-by-step solution
1. Step 1
  Compute total over 5 years for each scenario.
Answer
Individual printers:

Upfront: 20 × £80 = £1,600.

Ink/year: 20 × £30 = £600.

5 years: £1,600 + (£600 × 5) = £4,600.

Networked printer:

Upfront: £600.

Toner/year: £400.

5 years: £600 + (£400 × 5) = £2,600.

Saving over 5 years = £4,600 − £2,600 = £2,000.

Additional benefits not in the calculation: less floor space, fewer drivers to install, central management.
Examiner tip
Networked sharing also reduces SUPPORT cost — 1 printer to maintain vs 20 — which is often larger than the equipment saving alone.
6Calculate bandwidth share per user
Higher• Edexcel 4IT1 style — calculation (5 marks)• bandwidth-share, AO1, AO2
Question
A 200 Mbps home connection is shared between 6 devices, with typical usage profile:

1 4K stream: 25 Mbps.

2 video calls: 5 Mbps each.

3 web browsing/email: 5 Mbps each.

Calculate (a) total bandwidth in use, (b) headroom remaining, (c) impact if a 50 GB file download starts.
Step-by-step solution
1. Step 1
  Sum usage; compare to capacity.
Answer
(a) Usage = 25 + (2 × 5) + (3 × 5) = 25 + 10 + 15 = 50 Mbps.

(b) Headroom = 200 − 50 = 150 Mbps available.

(c) A 50 GB download could use the remaining 150 Mbps:

Time = (50,000 MB × 8) ÷ 150 Mbps = ~2,667 seconds ≈ 44 minutes.

Other users still have their 50 Mbps allocation — minimal impact unless the streaming/call traffic also increases.

The 200 Mbps plan handles this household comfortably.
Examiner tip
Modern fast connections rarely run at capacity. Shared usage = parallel, not serial — each app gets its slice.
7Explain THREE benefits of a home network
Higher• Edexcel 4IT1 style — explain (6 marks)• benefits, AO1, AO2
Question
Explain THREE benefits of having a home network, including a specific example for each.
Step-by-step solution
1. Step 1
  Each benefit: name + brief explanation + concrete example.
Answer
1. Shared internet connection. One ISP subscription serves all devices (laptops, phones, tablets, smart TV, doorbell). Saves cost vs separate plans, and provides consistent connectivity across the household. Example: a family of four watches Netflix in the lounge while one parent attends a video call upstairs — all through the same Wi-Fi.

2. File and media sharing. Files stored on a home server or NAS can be accessed from any device. Example: photos from a phone can be viewed on the Smart TV via shared media app (Plex, Apple Photos); documents on a desktop can be opened on a laptop without copying.

3. Resource sharing — one printer, one storage device. A single network printer serves multiple devices without needing USB connections. Example: the home printer can receive print jobs from any family member's laptop, tablet or phone via Wi-Fi.

Additional benefits candidates may mention:

Centralised security and parental controls.

Automatic backup to NAS.

Multi-room audio (Sonos, AirPlay).

Smart home device coordination (lights, thermostat, cameras).

Online gaming with consistent connection.
Examiner tip
Each benefit needs a CONCRETE EXAMPLE. Generic 'sharing' descriptions cap at 3/6.
8Discuss benefits of a LAN for a 20-person office
Higher• Edexcel 4IT1 style — extended (8 marks)• office-lan, AO1, AO2, AO3
Question
Discuss the benefits of installing a LAN in a 20-person office, covering financial, operational and collaborative aspects.
Step-by-step solution
1. Step 1
  Address each aspect with examples.
Answer
Financial benefits:

One internet connection serves 20 staff (~~£100/month) rather than 20 individual ones (~~£500+/month).

One networked multifunction printer (~~£800) instead of 20 individual printers (~~£1,600).

Centralised backup to NAS (~£500) rather than 20 external drives.

5-year saving: ~£25,000+ for a typical office.

Operational benefits:

Central IT management — install software, push updates, manage permissions from one place.

Server-based authentication — Single Sign-On (SSO) across apps.

Automatic backup of staff laptops to central server.

Network monitoring catches problems early.

New employees onboarded quickly — just connect their laptop.

Collaborative benefits:

Shared calendar, scheduling, email.

Real-time co-editing of documents (Google Workspace, Microsoft 365).

Internal instant messaging and video calls (Teams, Slack).

Shared project folders with permission controls.

Internal wiki / knowledge base accessible to all staff.

Security benefits:

Centralised firewall + content filtering.

One antivirus management console for all 20 devices.

VPN for remote staff access.

Audit logging at the network level.

Conclusion: for a 20-person office, a LAN is essentially mandatory — the financial, operational and collaborative benefits dwarf the setup cost (£3,000–£5,000 typical).
Examiner tip
A* answers address MULTIPLE aspects (financial + operational + collaborative + security) with specific examples for each.
9Evaluate drawbacks of a LAN
Stretch• Edexcel 4IT1 style — extended (8 marks)• drawbacks, AO1, AO2, AO3
Question
While LANs offer many benefits, they also have drawbacks. Discuss FOUR drawbacks of installing a LAN in a small business, with mitigations for each.
Step-by-step solution
1. Step 1
  Each drawback + how to mitigate.
Answer
1. Initial setup cost. New hardware (router, switch, access points, server, cabling) + installation + IT expertise costs typically £2,000–£10,000 upfront for a small business. Mitigation: phase the setup; lease equipment; use cloud services to reduce on-premises hardware.

2. Ongoing maintenance. Networks need updates, troubleshooting and security patches. A small business may not have in-house IT, so requires external support contracts. Mitigation: outsource IT to managed service providers; use simpler cloud-managed equipment (Cisco Meraki, Ubiquiti); train one staff member as primary contact.

3. Single points of failure. If the router or server fails, the WHOLE office can be impacted. Without redundancy, every staff member is offline. Mitigation: business SLA on equipment; UPS on critical devices; failover internet line (4G/5G); cloud-hosted alternatives for critical apps.

4. Security vulnerabilities. A networked system has more attack surface. One infected machine can spread malware to others. Misconfigured Wi-Fi can leak data. Mitigation: firewall + antivirus + regular security training for staff; network segmentation (guest Wi-Fi separate from internal); multi-factor authentication everywhere.

Conclusion: none of these drawbacks are deal-breakers — all can be mitigated with reasonable planning. The benefits of a LAN for any business >5 people far exceed the drawbacks.
Examiner tip
Top-band answers (1) identify SPECIFIC drawbacks, (2) describe their impact, (3) propose MITIGATIONS, (4) conclude with reasoned judgement.

Key Formulae — Benefits of using a LAN/home network

The formulae you need to memorise for benefits of using a lan/home network on the Pearson Edexcel IGCSE 4IT1 paper, with every variable defined in plain English and a note on when to use it.

Cost saving from sharing
$Saving = Individual Option Cost − Shared Option Cost$
When to use
Building the business case for a network.
Example
£1,640 − £880 = £760 Year 1 saving (4-person household).
Bandwidth per active user
$Per User = Total Bandwidth ÷ Concurrent Active Users$
When to use
Estimating connection adequacy.
Example
200 Mbps ÷ 6 = ~33 Mbps each (rough; real apps don't share equally).
TCO over years
$TCO = Setup Cost + (Annual Operating Cost × Years)$
When to use
Long-term cost comparison.
Example
£3,000 + (£200/month × 12 × 5) = £15,000 over 5 years.

Key Definitions and Keywords — Benefits of using a LAN/home network

Definitions to memorise and the exact keywords mark schemes credit for benefits of using a lan/home network answers — sharpened from recent examiner reports for the 2026 Pearson Edexcel IGCSE 4IT1 sitting.

LAN (Local Area Network)
Examiner keyword
A network within a single building or site — home, office, school, factory. Typically uses Ethernet and Wi-Fi.
Home network
Examiner keyword
A LAN in a residential property, typically built around a single home router with Wi-Fi and a few Ethernet connections.
File sharing
Examiner keyword
The ability of users on a network to access common files (documents, photos, videos) from a central location.
Resource sharing
Examiner keyword
Sharing hardware (printers, scanners, storage) and software (applications, databases) between multiple users on a network.
Internet connection sharing
Examiner keyword
Multiple devices using a single internet subscription via a shared router/modem.
NAS (Network-Attached Storage)
Examiner keyword
A storage device with built-in network connectivity, accessible to all devices on the LAN. Used for shared files and backup.
Centralised backup
Backing up all devices on the network to a single location (server or NAS). Easier to manage and restore than per-device backups.
Single Sign-On (SSO)
A system where one login grants access to multiple applications on a network.
Network printer
Examiner keyword
A printer connected directly to the network (via Ethernet or Wi-Fi) rather than to a single device, allowing all networked devices to print to it.
Content filter
Network-level blocking of access to certain websites or categories (e.g., adult content, social media, gambling). Used in schools and businesses.
Parental controls
Network or device-level controls limiting what content children can access, time online, app usage, etc.

Common Mistakes and Misconceptions — Benefits of using a LAN/home network

The traps other students keep falling into on benefits of using a lan/home network questions — taken from recent Pearson Edexcel IGCSE 4IT1 examiner reports and mark schemes — and how to avoid them.

✕Listing benefits without explaining or giving examples.
Edexcel 4IT1 examiner reports.
Why it happens
Time pressure.
How to avoid it
Every benefit needs: name + explanation + concrete example. Without these, marks are capped at half.
✕Discussing only benefits without acknowledging drawbacks.
Why it happens
Question asked about benefits.
How to avoid it
If asked to EVALUATE or DISCUSS, address both sides. Pure benefit lists cap in mid-range.
✕Saying 'saves money' without quantifying.
Why it happens
Easier to make general claims.
How to avoid it
Quantify savings where possible. 'Saves £100/month on internet' is stronger than 'saves money'.
✕Focusing only on cost savings, ignoring productivity/collaboration benefits.
Why it happens
Cost is most visible.
How to avoid it
LAN benefits also include collaboration, security, IT manageability, scalability — these often exceed cost savings.
✕Saying 'Wi-Fi' when meaning 'LAN'.
Why it happens
Common usage.
How to avoid it
Wi-Fi is the WIRELESS PART of a LAN. A LAN can be all-wired, all-wireless, or hybrid. Use the right term.

Practice questions

Exam-style questions with step-by-step worked solutions. Try one before checking the method.

Past paper style quiz

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Benefits of using a LAN/home network

Short Study Notes in the form of Slides

Short Study Notes — Benefits of using a LAN/home network

Detailed Notes

What you’ll learn

How it’s examined

1Identify the LAN benefit being described

2Identify whether each scenario is a cost-saving benefit

3Identify collaboration benefits

4Calculate cost saving from sharing

5Calculate office printer saving

6Calculate bandwidth share per user

7Explain THREE benefits of a home network

8Discuss benefits of a LAN for a 20-person office

9Evaluate drawbacks of a LAN

Cost saving from sharing

Bandwidth per active user

TCO over years

LAN (Local Area Network)

Home network

File sharing

Resource sharing

Internet connection sharing

NAS (Network-Attached Storage)

Centralised backup

Single Sign-On (SSO)

Network printer

Content filter

Parental controls

✕Listing benefits without explaining or giving examples.

✕Discussing only benefits without acknowledging drawbacks.

✕Saying 'saves money' without quantifying.

✕Focusing only on cost savings, ignoring productivity/collaboration benefits.

✕Saying 'Wi-Fi' when meaning 'LAN'.

Practice questions

Past paper style quiz

Assess your understanding