11 SOFTWARE ENGINEERING,
METHODOLOGIES, TESTING
ACCURATE QUESTIONS AND ANSWERS
WITH SOLUTIONS 2024
Computer science - ANSWER focuses on theory and fundamentals
Software engineering - ANSWER an engineering discipline that is concerned with the practical aspects of
developing and delivering software
What percentage of software costs are for development compared to testing in 2015? - ANSWER Testing
35%, Development 65%
What would make a manager say that a software project has failed? (4) - ANSWER - not functional or
buggy
- missing critical features
- over schedule
- over budget
What percentage of projects are either over schedule or over budget? - ANSWER 2004 nearly 75% of all
IT projects were over budget, and 2016 55% of all ITP projects had failed
Why does software engineering fail? (6) - ANSWER - bad estimate
- each project is different in some way
- larger systems are being created
- technology changes rapidly
- more complex systems that may need capabilities that are not handled by existing software
engineering techniques
- don't use formal software engineering which leads to communication issues in team
, Software Engineering Intent - ANSWER support professional software development, not individual
programming
Four Fundamental activities common to all software - ANSWER - Specification: define what is needed
- Development: program what is needed
- Validation: ensure the program is what is needed
- Evolution: modify the program based on new requirements
Plan-based software engineering - ANSWER produces a large amount of documentation for sustainable
projects (ie. waterfall, incremental, reuse-oriented, spiral)
Agile-based software engineering - ANSWER sacrifices documentation for earlier release dates and more
adaptability to changing requirements (ie. eXtreme Programing (XP), Scrum, Scrum-but)
Waterfall model (Royce's) (Plan-based) - ANSWER Follows a strict lifecycle where each phase is signed off
before moving to the next
Waterfall model phases - ANSWER 1. Requirements
2. Design
3. Implementation
4. Verification
5. Maintenance
Incremental development (agile) - ANSWER develops an initial implementation, exposes this to user
comment, and evolves through several versions
Incremental development pros (3) - ANSWER - cost of accommodating changing customer requirements
is reduced
- easier to get customer feedback on development
- more rapid delivery and deployment of useful software to the customer
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