1. What is the purpose
of the testing?
Software testing is the
process used to help identify the Correctness, Completeness, Security and
Quality of the developed Computer Software.
Software Testing is the
process of executing a program or system with the intent of finding errors.
2. What is quality
assurance?
Software QA involves the
entire software development PROCESS - monitoring and improving the process,
making sure that any agreed-upon standards and procedures are followed, and
ensuring that problems are found and dealt with. It is oriented to
'prevention'.
3. What is the difference
between QA and testing?
Testing involves
operation of a system or application under controlled conditions and evaluating
the results. It is oriented to 'detection'.
Software QA involves the
entire software development PROCESS - monitoring and improving the process,
making sure that any agreed-upon standards and procedures are followed, and
ensuring that problems are found and dealt with. It is oriented to
'prevention'.
4. Describe the Software
Development Life Cycle
It includes aspects such
as initial concept, requirements analysis, functional design, internal design,
documentation planning, test planning, coding, document preparation,
integration, testing, maintenance, updates, retesting, phase-out, and other
aspects.
5. What are SDLC and
STLC and the different phases of both?
SDLC
> Requirement phase
> Desing phase (HLD,
DLD (Program spec))
> Coding
> Testing
> Release
> Maintenance
STLC
> System Study
> Test planning
> Writing Test case
or scripts
> Review the test
case
> Executing test case
> Bug tracking
> Report the defect
6. What is a Test bed?
Test Bed is an execution
environment configured for software testing. It consists of specific hardware,
network topology, Operating System, configuration of the product to be under
test, system software and other applications. The Test Plan for a project should
be developed from the test beds to be used.
7. What is a Test data?
Test Data is that run
through a computer program to test the software. Test data can be used to test
the compliance with effective controls in the software.
8. Why does software
have bugs?
Miscommunication or no
communication - about the details of what an application should or shouldn't do
Programming errors - in
some cases the programmers can make mistakes.
Changing requirements -
there are chances of the end-user not understanding the effects of changes, or
may understand and request them anyway to redesign, rescheduling of engineers,
effects of other projects, work already completed may have to be redone or
thrown out.
Time force - preparation
of software projects is difficult at best, often requiring a lot of guesswork.
When deadlines are given and the crisis comes, mistakes will be made.
9. What is the
Difference between Bug, Error and Defect?
Error: It is the
Deviation from actual and the expected value.
Bug: It is found in the
development environment before the product is shipped to the respective
customer.
Defect: It is found in
the product itself after it is shipped to the respective customer.
10. Describe the
difference between validation and verification
Verification is done by
frequent evaluation and meetings to appraise the documents, policy, code,
requirements, and specifications. This is done with the checklists,
walkthroughs, and inspection meetings.
Validation is done
during actual testing and it takes place after all the verifications are being
done.
11. What is the
difference between structural and functional testing?
Structural testing is a
"white box" testing and it is based on the algorithm or code.
Functional testing is a
"black box" (behavioral) testing where the tester verifies the
functional specification.
12. Describe bottom-up
and top-down approaches
Bottom-up approach: In
this approach testing is conducted from sub module to main module, if the main
module is not developed a temporary program called DRIVERS is used to simulate
the main module.
Top-down approach: In
this approach testing is conducted from main module to sub module. if the sub
module is not developed a temporary program called STUB is used for simulate
the submodule.
13. What is Re- test?
What is Regression Testing?
Re- test - Retesting
means we testing only the certain part of an application again and not
considering how it will effect in the other part or in the whole application.
Regression Testing -
Testing the application after a change in a module or part of the application
for testing that is the code change will affect rest of the application.
14. Explain Load,
Performance and Stress Testing with an Example.
Load Testing and
Performance Testing are commonly said as positive testing where as Stress
Testing is said to be as negative testing.
Say for example there is
a application which can handle 25 simultaneous user logins at a time. In load
testing we will test the application for 25 users and check how application is
working in this stage, in performance testing we will concentrate on the time
taken to perform the operation. Where as in stress testing we will test with
more users than 25 and the test will continue to any number and we will check
where the application is cracking.
15. What is UAT testing?
When it is to be done?
UAT testing - UAT stands
for 'User acceptance Testing. This testing is carried out with the user
perspective and it is usually done before the release.
For more FAQs in
Software Testing visit =>http://softwaretestingguide.blogspot.com
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