Why Software Testing is Necessary? Give reasons?

Testing is essential because of the following reasons:
1. Testing is always needed for correctly understand the fault errors in software during its development phases.
2. It is necessary because it always ensures the users or customers satisfaction and reliability of the application.
3. It is needed in software development to increase the reliability and quality of the software.
4. Testing is needed to provide the various facilities to the users like delivery of high quality software or application, lower maintenance costs and more accurate and reliable results also.
5. Testing is necessary because of effective optimum performance of system and capacity utilization, software reliability, quality, and system or application assurance.
6. It is necessary because it is including in the project plan, and to stay in business.
7. It is needed to prove that software or application has no faults, because failures can be very expensive in nature.
8. Software Testing is needed to learn more about the reliability of the software and application.

What are the Experience-based testing techniques?

In experience-based techniques, people’s knowledge, skills and background are a prime contributors to the test conditions and test cases.

The experience of both technical and business people is important, as they bring different perspectives to the test analysis and design process.

Due to previous experience with similar systems, they may have insights into what could go wrong, which is very useful for testing.

What are the phases of a formal review?

In contrast to informal reviews, formal reviews follow a formal process. A typical formal review process consists of six main steps:

  1. Planning
  2. Kick-off
  3. Preparation
  4. Review meeting
  5. Rework
  6. Follow-up.

What are the different Methodologies in Agile Development Model?

  1. Extreme Programming (XP)
  2. Scrum
  3. Lean Software Development
  4. Feature-Driven Development
  5. Agile Unified Process
  6. Crystal
  7. Dynamic Systems Development Model (DSDM)

What is Component Testing?

  • Component Testing, also known as unit, module and program testing, searches for defects in, and verifies the functioning of software (e.g. modules, programs, objects, classes, etc.) that are separately testable.
  • Component testing may be done in isolation from the rest of the system depending on the context of the development life cycle and the system.
  • Most often stubs and drivers are used to replace the missing software and simulate the interface between the software components in a simple manner. A stub is called from the software component to be tested; a driver calls a component to be tested.