Manual Testing Interview Questions - part4


Ques.76. What is the difference between regression and retesting?
Ans. Regression testing is testing the application to verify that a new code change doesn't affect the other parts of the application. Whereas, in retesting we verify if the fixed issue is resolved or not.


Ques.77. What is the difference between blackbox and whitebox testing?
Ans. Blackbox testing is a type of testing in which internal architecture of the code is not required for testing. It is usaually applicable for system and acceptance testing.
Whereas whitebox testing requires internal design and implementation knowledege of the application being tested. It is usually applicable for Unit and Integration testing.


Ques.78. What is the difference between smoke and sanity testing?
Ans. The difference between smoke and sanity testing is-

  • Smoke testing is a type of testing in which the all major functionalities of the application are tested before carrying out exhaustive testing. Whereas sanity testing is subset of regression testing which is carried out when there is some minor fix in application in a new build.
  • In smoke testing shallow-wide testing is carried out while in sanity narrow-deep testing (for a particular fucntionality) is done.
  • The smoke tests are usually documented or are automated. Whereas the sanity tests are generally not documented or unscripted.

Ques.79. What is code coverage?
Ans. Code coverage is the measure of the amount of code covered by the test scripts. It gives the idea of the part of the application covered by the test suite.


Ques.80. What is cyclomatic complexity?
Ans. Cyclomatic complexity is the measure of the number of independent paths in an application or program. This metric provides an indication of the amount of effort required to test complete functionality. It can be defined by the expression -
L – N + 2P, where:
L is the number of edges in the graph
N is the number of node
P is the number of disconnected parts


Ques.81. What is dynamic testing?
Ans. Testing performed by executing or running the application under test either manually or using automation.


Ques.82. What is an exit criteria?
Ans. An exit criteria is a formal set of conditions that specify the agreed upon features or state of application in order to mark the completion of the process or product.


Ques.83. What is traceability matrix?
Ans. In software testing a traceability matrix is a table that relates the high level requirements with detailed requirements, test plans or test cases in order to determine the completeness of the relationship.


Ques.84. What is pilot testing?
Ans. Pilot testing is a testing carried out as a trial by limited number of users evaluate the system and provide their feedback before the complete deployment is carried out.


Ques.85. What is backend testing?
Ans. Backend testing is a type of testing that invloves testing the backend of the system which comprises of testing the databases and the APIs in the application.


Ques.86. What are some advantages of automation testing?
Ans. Some advantages of automation testing are-

  1. Test execution using automation is fast and saves considerable amount of time.
  2. Carefully written test scripts remove the chance of human error during testing.
  3. Tests execution can be scheduled for nightly run using CI tools like Jenkins which can also be configured to provide daily test results to relevant stakeholders.
  4. Automation testing is very less resource intensive. Once the tests are automated, test execution requires almost no time of QAs. Saving Qa bandwidth for other explratory tasks.

Ques.87. What are some disadvantages of automation testing?
Ans. Some advantages of automation testing are-

  1. It requries skilled automation testing experts to write test scritps.
  2. Additional effort to write scripts is required upfront.
  3. Automation scripts are limited to verification of the tests that are coded. These tests may miss some error that is very glaring and easily identifiable to human(manual QA).
  4. Even with some minor change in application, script updation and maintenance is required.

Ques.88. What is mutation testing?
Ans. Mutation testing is a type of white box testing in which the source code of the application is mutated to cause some defect in its working. After that the test scripts are executed to check for their correctness by verifying the failures caused the mutant code.


Ques.89. Write test cases for Pen.
Ans. Test cases of Pen


Ques.90. Write test cases for ATM Machine.
Ans. Test cases of ATM Machine


Ques.91. Write test cases for Login.
Ans. Test cases of Login Page


Ques.92. Write test cases for Lift.
Ans. Test cases of Lift


Ques.93. Write test cases for Lift.
Ans. Test cases of E-commerce application

For other test scenarios check our Test Scenarios Examples section.



Ques.94. What should be the psychology testing?

The two main stakeholders in software development life cycle - Testers and Developers have different mindsets while approaching an application. Testers tend to have a more stringent approach of examining the software. Most of the time they are looking to "break the application". Whereas, developers have the mindset to "make the application work".
ISTQB has defined certain psychological factors that influence the success of testing-

  • Independence - Testers should enjoy a certain degree of independence while testing the application rather than following a straight path. This can be achieved by different apporaches like off-shoring the QA process, getting test strategies and other test plans by someone not following any sort of bias.
  • Testing is often looked upon as destructive activity as it aims at finding flaws in system. But QA personnel should present testing as required and integral part, presenting it as constructive activity in overall sofware development lifecycle by mitigating the risks at early stages.
  • More often than not, tester and developers are at the opposite end of spectrum. Testers need to have good interpersonal skills to communicate their findings without induging in any sort of tussle with the developers.
  • All the communication and discussions should be focussed on facts and figures(risk analysis, priority setting etc). Emphasizing that the collaborative work of developers and testers will lead to better software.
  • Empathy is one characterstic that definitely helps in testing. Testers empathizing with developers and other project stakeholders will lead to better relation between the two. Also, empathizing with end users will lead to a software with better usability of the product.
  • Reference- ISTQB Foundation Level Syllabus - The Certified Tester Foundation Level in Software Testing

Ques.95. What is the difference between Testing and debugging?
Ans. Testing is the primarily performed by testing team in order to find the defects in the system. Whereas, debugging is an activity performed by development team. In debugging the cause of defect is located and fixed. Thus removing the defect and preventing any future occurrence of the defect as well.
Other difference between the two is - testing can be done without any internal knowledge of software architecture. Whereas debugging requires knowledge of the software architecture and coding.


Ques.96. Explain Agile methodology?
Ans. Agile methodology of software development is based on interative and increamental approach. In this model the application is broken down into smaller build on which different cross functional team work together providing rapid delivery along with adapting to changing needs at the same time.


Ques.97. What is scrum?
Ans. A scrum is a process for implementing Agile methodology. In scrum, time is divided into sprints and on completion of sprints, a deliverable is shipped.


Ques.98. What are the different roles in scrum?
Ans. The different roles in scrum are -

  1. Product Owner - The product owner owns the whole development of the product, assign tasks to the team and act as an interface between the scrum team(development team) and the stakeholders.
  2. Scrum Master - The scrum master monitors that scrum rules get followed in the team and conducts scrum meeting.
  3. Scrum Team - A scrum team participate in the scrum meetings and perform the tasks assigned.

Ques.99. What is a scrum meeting?
Ans. A scrum meeting is daily held meeting in scrum process. This meeting is conducted by scrum master and update of previous day's work along with next day's task and context is defined in scrum.


Ques.100. Explain TDD (Test Driven Development).
Ans. Test Driven Development is a software development methodology in which the development of the software is driven by test cases created for the functionality to be implemented. In TDD first the test cases are created and then code to pass the tests is written. Later the code is refactored as per the standards.