Software Engineering Software Engineering 3 ā Questions and Answers
Question 1: Which Agile ceremony is held daily and limited to 15 minutes?
- Sprint Review
- Sprint Retrospective
- Daily Standup (Correct answer)
- Backlog Refinement
Correct answer: Daily Standup
The Daily Standup (or Daily Scrum) is a short synchronization meeting where team members share progress, plans, and blockers.
Question 2: What is 'Big O notation' used to express?
- The number of bugs in a codebase
- The asymptotic time or space complexity of an algorithm (Correct answer)
- The size of the development team needed
- The percentage of code covered by tests
Correct answer: The asymptotic time or space complexity of an algorithm
Big O notation describes how an algorithm's runtime or memory usage grows relative to the size of its input.
Question 3: In version control, what is a 'merge conflict'?
- Two developers pushing to different repositories
- Two branches modifying the same lines of a file in incompatible ways (Correct answer)
- A failed build caused by a missing dependency
- A branch that has fallen too far behind the main branch
Correct answer: Two branches modifying the same lines of a file in incompatible ways
A merge conflict occurs when two branches have made different changes to the same region of a file and Git cannot automatically reconcile them.
Question 4: What is the main advantage of microservices over a monolithic architecture?
- Microservices always run faster than monoliths
- Services can be deployed, scaled, and developed independently (Correct answer)
- Microservices eliminate the need for databases
- Microservices require less network infrastructure
Correct answer: Services can be deployed, scaled, and developed independently
Microservices allow each service to be scaled, updated, and deployed independently, enabling faster iteration and fault isolation.
Question 5: Which testing level verifies that individual components work correctly in isolation?
- System testing
- Acceptance testing
- Integration testing
- Unit testing (Correct answer)
Correct answer: Unit testing
Unit testing targets the smallest testable parts of an application ā individual functions or methods ā in isolation from other components.
Question 6: What does 'DRY' stand for in software engineering principles?
- Deploy, Run, Yield
- Don't Repeat Yourself (Correct answer)
- Dynamic Resource Yielding
- Data Reduction Yield
Correct answer: Don't Repeat Yourself
DRY (Don't Repeat Yourself) advocates for reducing duplication by abstracting repeated logic into a single authoritative location.
Question 7: What is 'refactoring' in software development?
- Adding new features to existing code
- Rewriting an application from scratch in a new language
- Restructuring existing code without changing its external behavior (Correct answer)
- Fixing bugs found during QA testing
Correct answer: Restructuring existing code without changing its external behavior
Refactoring improves code structure, readability, and maintainability while preserving its existing functionality.
Software Engineering Software Engineering 3
Which Agile ceremony is held daily and limited to 15 minutes?