NEB Class 12 • Computer Science • Networking • Concept Guide

LAN, MAN, WAN & Network Architectures: NEB Class 12 Computer Guide

Master LAN, MAN, WAN and Network Architectures through clear concepts, representations, a reliable answer method and exam-focused practice.

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Concepts · Worked reasoning · NEB practice

Quick answer: LAN, MAN and WAN describe network scope and operational context rather than guaranteed speed. Client-server centralizes services and policy, while peer-to-peer lets nodes share resources directly; real systems may combine architectures.

Core concept

What LAN, MAN, WAN and Network Architectures means physically

LAN, MAN and WAN describe network scope and operational context rather than guaranteed speed. Client-server centralizes services and policy, while peer-to-peer lets nodes share resources directly; real systems may combine architectures.

Compare scope→ownership→media→latency→administration→security and fault model. Choose architecture from service, scale and control requirements.

The institutional reference gives the wider physical model; the CDC curriculum determines the NEB boundary.

Worked checkpoint with interpretation

A school computer lab is a LAN, campuses across a city may use a metropolitan link, and branches across countries rely on WAN services.

Do not stop at the number. State what the sign, ratio, spacing, frequency or direction means. A common error is Defining network type only by speed, assuming the Internet is one WAN owned by one body, or treating peer-to-peer as automatically insecure.

NEB answer method

Model → evidence → equation → check

First identify the system and what the question asks. Label the diagram, apparatus or reaction with SI quantities, then state the principle before selecting an equation. Solve symbolically where possible and check units, limiting cases and chemical or physical meaning.

StageQuestionEvidence
ModelWhat is idealised?Assumption stated
RepresentationWhich diagram fits?Labels or balanced equation
CalculationWhich relation follows?Symbols then SI values
EvaluationDoes it make sense?Unit, sign and trend check

Make the idea concrete in Nepal

Connect the model to a school laboratory, household technology, health, environment, energy or local material. The example should clarify the science rather than merely mention a place. Compare a prediction with an observation and record uncertainty.

Review the NEB Class 12 Computer Science revision roadmap and the complete Computer Science guide. For online or physical tuition, call 9846662070.

Questions students ask about LAN, MAN, WAN and Network Architectures

What is the central idea of LAN, MAN, WAN and Network Architectures?

LAN, MAN and WAN describe network scope and operational context rather than guaranteed speed. Client-server centralizes services and policy, while peer-to-peer lets nodes share resources directly; real systems may combine architectures.

Which equation should I remember?

Compare scope→ownership→media→latency→administration→security and fault model. Choose architecture from service, scale and control requirements.

How should I begin a numerical?

Draw the situation, list known quantities in SI units, choose the governing relation symbolically, substitute once and finish with a unit and reasonableness check.

What is a common exam mistake?

Defining network type only by speed, assuming the Internet is one WAN owned by one body, or treating peer-to-peer as automatically insecure.

How can I practise this topic?

Alternate one concept explanation, one diagram and two numericals. Revisit errors after a day instead of only rereading the solution.

Where can I get tuition support?

For online or physical KTM Tuition classes, call 9846662070. After Grade 12, the MKS Education panel below gives preparation and pre-counselling contacts.

Frequently asked questions

References and next steps

Scope checked against CDC Nepal; concept support from an institutional reference and OpenStax Science. Continue with the LAN, MAN, WAN and Network Architectures cluster.

NEB +2 tuition support

Ask about online or physical tuition

For focused Class 11 and Class 12 subject tuition, lesson clarification, worked-example practice and exam preparation, call 9846662070. Class mode, timetable, teacher availability and fees should be confirmed directly before enrolment.

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