Part A: Short Answer Questions $(20$ marks$)$

Define software engineering.

Explain its significance in modern software development. $(5$ marks$)$

Describe the main phases of the Software Development Life Cycle $($SDLC$).$

Explain the purpose of each phase briefly. $(5$ marks$)$

Explain version control.

Why is it crucial in software development? Provide an example of a version control system. $(5$ marks$)$

What is software maintenance?

Describe the different types of maintenance. $(5$ marks$)$