SDLC Phases & Roles of System Analyst & Software Engineer Practice Set: NEB 12 Computer

Worked practice

Build the result from meaning, not memory

The software development life cycle organizes discovery, analysis, design, implementation, testing, deployment, operation and improvement. Analysts clarify needs and processes; software engineers design and build reliable technical solutions with stakeholders.

The governing relationship is Need→feasibility and requirements→architecture/design→implementation→verification/validation→release→monitoring/maintenance, with feedback and risk management throughout. Check the convention, geometry or boundary condition before calculation.

Independent practice ladder

1. Define the key physical quantities and give their SI units.
2. Draw and label the relevant wave, ray, mode or energy diagram.
3. Recalculate the worked example after changing one input by a factor of two.
4. Explain the result without equations.
5. Create a Nepal-relevant situation such as a classroom speaker, musical pipe, optical slit or thermal machine.
6. Compare two cases and predict the larger output before calculating.
7. Find and repair one deliberately wrong sign, node or unit.
8. Write a three-mark answer and a five-mark answer.

Answer protocol: diagram → known data → principle → symbolic equation → SI substitution → result → physical check. Treating SDLC as a rigid one-way diagram, coding before agreeing acceptance criteria, confusing job titles with exclusive tasks, or ending quality work at deployment.

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.

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.

Frequently asked questions

Questions students ask about SDLC Phases and Roles of System Analyst and Software Engineer

References and next steps

Scope checked against CDC Nepal; concept support from an institutional reference and OpenStax Science. Continue with the SDLC Phases and Roles of System Analyst and Software Engineer cluster.