Software Engineering Cheat Sheet 2026

The 30 highest-yield Software Engineering facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is 'immutable infrastructure'? → Servers that are replaced rather than updated in place
2. Which practice involves automatically deploying every change that passes tests directly to production? → Continuous Deployment
3. What format do Agile user stories typically follow? → As a [user], I want [goal] so that [benefit]
4. Which pattern provides a way to access elements of an aggregate object sequentially without exposing its underlying representation? → Iterator
5. Which of the following activities is a part of quality assurance? → Process audit
6. Which requirements elicitation method involves creating a working model of the system to gather user feedback? → Prototyping
7. Which of the following phases in the Software Development Life Cycle (SDLC) is the most crucial? → Requirements analysis
8. What is 'scope creep' in software projects? → The unauthorized or uncontrolled expansion of project scope beyond its original boundaries
9. In SAFe, what is a 'PI Planning' event? → A quarterly planning event aligning teams on objectives
10. Which of the following is a peer review example? → Code review
11. What is a 'stakeholder' in the context of requirements engineering? → Any person or organization with an interest in or affected by the system
12. Which model can be chosen if the user participates in every stage of the SDLC? → RAD Model
13. Which concept in DevOps security integrates security practices throughout the entire CI/CD pipeline? → DevSecOps
14. What is 'requirements volatility'? → The tendency of requirements to change during the project lifecycle
15. In a CI/CD pipeline, what does 'CD' typically stand for? → Continuous Delivery or Continuous Deployment
16. Which diagram type is most commonly used to visualize the system boundary and interactions between actors and the system? → Use case diagram
17. An activity in the software life cycle that involves keeping tests from an earlier version to make sure the current one keeps the old one's capabilities. → Regression testing
18. What does CI stand for in the context of DevOps? → Continuous Integration
19. Ideally, integration test cases will pass if the unit test case does. → True
20. If there is a tight deadline for project development, one may opt for the waterfall model. → False
21. A specific type software life cycle activity that entails assessing the product's potential market. → Market analysis
22. What is the purpose of a 'feature flag' (feature toggle) in software deployment? → Enable or disable features at runtime without deploying new code
23. Which tool is commonly used for declarative infrastructure provisioning across multiple cloud providers? → Terraform
24. Which pattern is used to reduce the cost of creating and manipulating a large number of similar objects? → Flyweight
25. Customers receive updates for XP every ______ weeks. → 2
26. How many phases does the RAD model have? → 5 phase
27. A system engineer collaborates with the _________ to comprehend system needs. → All of the above
28. What is 'canary deployment'? → Rolling out a new version to a small subset of users before full deployment
29. In Extreme Programming (XP), which practice involves two programmers working together at one workstation? → Pair Programming
30. Which monitoring concept tracks the four key metrics: deployment frequency, lead time, change failure rate, and MTTR? → DORA metrics