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30 testing interview questions for experienced

Testing interview questions for experienced - contributed by Rohit Srivastava

What is Requirement Traceability Matrix?
What is difference between Pilot and Beta testing?
Describe how to perform Risk analysis during software testing?
What is Silk Test?
What is difference between Master Test Plan and Test Plan.
How to deal with not reproducible bug?
What is the difference between coupling and cohesion?
What is the role of QA in a project development?
When do you choose automated testing over manual testing?
What are the key challenges of software testing?
What is difference between QA, QC and Software Testing?
What is concurrent user hits in load testing?
What is difference between Front End Testing and Back End testing?
What is Automated Testing?
What is Testware?
What is Exhaustive Testing?
What is Gray Box Testing?
What is Integration Testing?
What is Scalability Testing?
What is Software Requirements Specification?
What is Storage Testing?
What is Stress Testing?
What is Test Harness?
Can you define test driver and test stub?
What is good design?
What makes a good QA or Test manager?
What is Manual scripted Testing and Manual Support testing?
What is Fuzz testing, backward compatibility testing and assertion testing?
How does a client or server environment affect testing?
What are the categories of defects?

Q1. What is Requirement Traceability Matrix?

The Requirements Traceability Matrix (RTM) is a tool to make sure that project requirement remain same throughout the whole development process. RTM is used in the development process because of following reasons:

• To determine whether the developed project is meet the requirements of the user.
• To determine all the requirements given by the user
• To make sure the application requirement can be fulfilled in the verification process.

Q2. What is difference between Pilot and Beta testing?

The differences between these two are listed below:

• A beta test when the product is about to release to the end user whereas pilot testing take place in the earlier phase of the development cycle.
• In beta testing application is given to a few user to make sure that application meet the user requirement and does not contain any showstopper whereas in case of pilot testing team member give their feedback to improve the quality of the application.

Q3. Describe how to perform Risk analysis during software testing?

Risk analysis is the process of identifying risk in the application and prioritizing them to test. Following are some of the risks:

1. New Hardware.
2. New Technology.
3. New Automation Tool.
4. Sequence of code delivery.
5. Availability of application test resources.

We prioritize them into three categories these are:

• High magnitude: Impact of the bug on the other functionality of the application.
• Medium: it can be tolerable in the application but not desirable.
• Low: it can be tolerable. This type of risk has no impact on the company business.

Q4. What is Silk Test?

Silk Test is a tool developed for performing the regression and functionality testing of the application. Silk Test a tool is used when we are testing the applications which are based on Window, Java, web or traditional client/server. Silk Test help in preparing the test plan and management of those test plans, to provide the direct accessing of the database and validation of the field.

Q5. What is difference between Master Test Plan and Test Plan.

The differences between Master Plan and Test Plan are given below:

• Master Test Plan contains all the testing and risk involved area of the application where as Test case document contains test cases.
• Master Test plan contain all the details of each and every individual tests to be run during the overall development of application whereas test plan describe the scope, approach, resources and schedule of performing test.
• Master Test plan contain the description of every tests that is going to be performed on the application where as test plan only contain the description of few test cases. during the testing cycle like Unit test, System test, beta test etc
• Master Test Plan is created for all large projects but when it is created for the small project then we called it as test plan.

Q6. How to deal with not reproducible bug?

Ans. A bug cannot be reproduced for following reasons:

1. Low memory.
2. Addressing to non available memory location.
3. Things happening in a particular sequence.

Tester can do following things to deal with not reproducible bug:

• Includes steps that are close to the error statement.
• Evaluate the test environment.
• Examine and evaluate test execution results.
• Resources & Time Constraints must be kept in point.

Q7.What is the difference between coupling and cohesion?

The difference between coupling and cohesion is discussed below:

• Cohesion is the degree which is measure dependency of the software component that combines related functionality into a single unit whereas coupling means that binding the related functionality into different unit.
• Cohesion deals with the functionality that related different process within the single module where as coupling deals with how much one module is dependent on the other modules within the application.
• It is good to increase the cohesion between the software whereas increasing coupling is avoided.

Q8. What is the role of QA in a project development?

The role of Quality Assurance is discussed below:

• QA team is responsible for monitoring the process to be carried out for development.
• Responsibilities of QA team are planning testing execution process.
• QA Lead creates the time tables and agrees on a Quality Assurance plan for the product.
• QA team communicated QA process to the team members.
• QA team ensures traceability of test cases to requirements.

Q9. When do you choose automated testing over manual testing?

This choice between automated testing over manual testing can be based upon following factors:

1. Frequency of use of test case
2. Time Comparison (automated script run much faster than manual execution.)
3. Reusability of Automation Script
4. Adaptability of test case for automation.
5. Exploitation of automation tool

Q10. What are the key challenges of software testing?

Following are some challenges of software testing:

1. Application should be stable enough to be tested.
2. Testing always under time constraint
3. Understanding the requirements.
4. Domain knowledge and business user perspective understanding.
5. Which tests to execute first?
6. Testing the Complete Application.
7. Regression testing.
8. Lack of skilled testers.
9. Changing requirements.
10. Lack of resources, tools and training

Q11. What is difference between QA, QC and Software Testing?

Quality Assurance (QA): QA refers to the planned and systematic way of monitoring the quality of process which is followed to produce a quality product. QA tracks the outcomes and adjusts the process to meet the expectation.

Quality Control (QC): Concern with the quality of the product. QC finds the defects and suggests improvements. The process set by QA is implemented by QC. The QC is the responsibility of the tester.

Software Testing: is the process of ensuring that product which is developed by the developer meets the user requirement. The motive to perform testing is to find the bugs and make sure that they get fixed.

Q12. What is concurrent user hits in load testing?

When the multiple users, without any time difference, hits on a same event of the application under the load test is called a concurrent user hit. The concurrency point is added so that multiple Virtual User can work on a single event of the application. By adding concurrency point, the virtual users will wait for the other Virtual users which are running the scripts, if they reach early. When all the users reached to the concurrency point, only then they start hitting the requests.

Q13. What is difference between Front End Testing and Back End testing?

The differences between front and back end testing are:

• Front End Testing is performed on the Graphical User Interface (GUI).whereas Back End Testing involves databases testing.
• Front end consist of web site look where user can interact whereas in case of back end it is the database which is required to store the data.
• When ender user enters data in GUI of the front end application, then this entered data is stored in the database. To save this data into the database we write SQL queries.

Q14. What is Automated Testing?

The process of performing testing automatically which reduces the human intervention this is automation testing. The automation testing is carried out with the help of the some automation tool like QTP, Selenium, WinRunner etc. In automation testing we use a tool that runs the test script to test the application; this test script can be generated manually or automatically. When testing is completed then tools automatically generate the test report and report.

Q15. What is Testware?

The testware is:

• The subset of software which helps in performing the testing of application.
• Testware are required to plan, design, and execute tests. It contains documents, scripts, inputs, expected results, set-up and additional software or utilities used in testing.
• Testware is term given to combination of all utilities and application software that required for testing a software package.

Testware is special because it has:

1. Different purpose
2. Different metrics for quality and
3. Different users

Q16.What is Exhaustive Testing?

Exhaustive Testing, as the name suggests is very exhaustive. Exhaustive testing means to test every component in the application with every possible number of inputs. According to Principles of testing Exhaustive Testing is Impossible because exhaustive testing requires more time and effort to test the application for all possible number of inputs. This may lead to high cost and delay in the release of the application.

Q17. What is Gray Box Testing?

Grey box testing is the hybrid of black box and white box testing. In gray box testing, test engineer has the knowledge of coding section of the component and designs test cases or test data based on system knowledge. In this tester has knowledge of code, but this is less than the knowledge of white box testing. Based on this knowledge the test cases are designed and the software application under test treats as a black box & tester test the application from outside.

Q18. What is Integration Testing?

Integration testing is black box testing. Integration testing focuses on the interfaces between units, to ensure that units work together to complete a specify task. The purpose of integration testing is to confirm that different components of the application interact with each other. Test cases are developed with the purpose of exercising the interfaces between the components. Integration testing is considered complete, when actual results and expected results are same. Integration testing is done after unit testing. There are mainly three approaches to do integration testing:

• Top-down Approach tests the components by integrating from top to bottom.
• Bottom-up approach It takes place from the bottom of the control flow to the higher level components
• Big bang approach In this are different module are joined together to form a complete system and then testing is performed on it.

Q19. What is Scalability Testing?

Scalability testing is testing performed in order to enhanced and improve the functional and performance capabilities of the application. So that, application can meets requirements of the end users. The scalability measurements is done by doing the evaluating the application performance in load and stress conditions. Now depending upon this evaluation we improve and enhanced the capabilities of the application.

Q20. What is Software Requirements Specification?

• A software requirements specification is a document which acts as a contract between the customer and the supplier.
• This SRS contain all the requirement of the end user regarding that application. SRS can be used as a communication medium between the customer and the supplier.
• The developer and tester prepare and examine the application based on the requirements written in the SRS document.
• The SRS documented is prepared by the Business Analyst by taking all the requirements for the customer.

Q21. What is Storage Testing?

In Storage Testing we test those functionalities of the application which is responsible for storing the data into database. The data entered by the end user in GUI or front end, is the same data which is stored in the database. The storage testing determines that the data taken from the front end of the application is stored in correct place and in correct manner in the database.

Q22. What is Stress Testing?

Stress testing tests the software with a motive to check that the application do not crashes if we increase the stress on the application by increasing the large number of user working on the application. We can also apply the stress on the application firing the lots of process which cannot be handled by the application. We perform the stress testing on the application evaluate the application capabilities at or beyond the limits of its specified requirements to determine. Generally, this is a type of performance testing performed in a very high level of load and stress condition.

Q23. What is Test Harness?

A test harness is a collection of software and test data required to test the application by running it in different testing condition like stress, load, data- driven, and monitoring its behavior and outputs. Test Harness contains two main parts:

• Test execution engine
• Test script repository

Automation testing is the use of a tool to control the execution of tests and compare the actual results with the expected results. It also involves the setting up of test pre-conditions.

Q24. Can you define test driver and test stub?

• The Stub is called from the software component to be tested. It is used in top down approach.
• The driver calls a component to be tested. It is used in bottom up approach.
• Both test stub and test driver are dummy software components.

We need test stub and test driver because of following reason:

• Suppose we want to test the interface between modules A and B and we have developed only module A. So we cannot test module A but if a dummy module is prepare, using that we can test module A.
• Now module B cannot send or receive data from module A directly so, in these cases we have to transfer data from one module to another module by some external features. This external feature used is called Driver.

Q25.What is good design?

Design refers to functional design or internal design. Good internal design is indicated by software code whose overall structure is clear, understandable, easily modifiable, and maintainable; is robust with sufficient error-handling and status logging capability, and works correctly when implemented. Good functional design is indicated by an application whose functionality can be traced back to customer and end-user requirements.

Q26. What makes a good QA or Test manager?

A good QA or Test manager should have following characteristics:

• Knowledge about Software development process
• Improve the teamwork to increase productivity
• Improve cooperation between software, test, and QA engineers
• To improvements the QA processes.
• Communication skills.
• able to conduct meetings and keep them focused

Q27. What is Manual scripted Testing and Manual Support testing?

Manual Scripted Testing: Testing method in which the test cases are designed and reviewed by the team before executing it. It is done by manual testing teams.
Manual-Support Testing: Testing technique that involves testing of all the functions performed by the people while preparing the data and using these data from automated system. it is conducted by testing teams

Q28. What is Fuzz testing, backward compatibility testing and assertion testing?

Fuzz Testing: testing application by entering invalid, unexpected, or random data to the application this testing is performed to ensure that application is not crashing when entering incorrect and unformatted data.

Backward Compatibility Testing: Testing method which examines performance of latest software with older versions of the test environment.
Assertion Testing: Type of testing consisting in verifying if the conditions confirm the product requirements.

Q29. How does a client or server environment affect testing?

There are lots of environmental factors that affect the testing like speed of data transfer data transfer, hardware, and server etc while working with client or server technologies, testing will be extensive. When we have time limit, we do the integration testing. In most of the cases we prefer the load, stress and performance testing for examine the capabilities of the application for the client or server environment.

Q30. What are the categories of defects?

There are three main categories of defects:

• Wrong: The requirements are implemented incorrectly in the application.
• Missing: When requirement given by the customer and application is unable to meet those application.
• Extra: A requirement incorporated into the product that was not given by the end customer. This is always a variance from the specification, but may be an attribute desired by the user of the product.  

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Discussion Board
Try to Add

Its really good collection..Try to Add much more..!

Ali 10-30-2014 03:01 AM

looking more on real time interview q and answres for manual and along with selenium java and tiil related for experienced

its good and along with what is cross browser testing and UAT testing for experienced ,
more information regarding agile methodology and others.

looking more on real time interview q and answres for manual and along with selenium java and tiil related for experienced

mylarappa 10-9-2014 05:38 AM

Can add more questions

Difference between severity and priority ?

Manu Jindal 10-7-2014 03:01 AM


Its very informative, really helps in preparing interviews

sudheesh 08-12-2014 09:14 AM


very good,,

rajesh 07-31-2014 05:18 AM

very good

this tutorials is very good...........

basweshwar 06-27-2014 05:53 AM

RTM is also used in testing

the first question regarding RTM states its used in development. But the same is also used in testing to track that each requirement has a corresponding test scenarios.

rash 01-18-2014 10:58 AM

Testing Interview questions.

Good collection. But still can include many more questions and answers too can be better.

Raji 12-13-2013 05:13 PM



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