Vistaar Technologies Softwaretest Engineer Interview Questions and Answers

I use TestNG for unit testing and BDD (Behavior Driven Development) for integration testing.

• TestNG is used for unit testing to validate individual units of code.

• BDD is used for integration testing to validate the behavior of the system.

• TestNG allows for easy setup of test cases using annotations like @Test, @BeforeMethod, @AfterMethod.

• BDD frameworks like Cucumber use plain English sentences to define test scenarios.

• Tes...read more

The reason for what?

• Need more context to provide a specific reason

• Could be related to a specific action, decision, outcome, etc.

• Can you provide more details or clarify the question?

A drawback is a disadvantage or limitation of a particular situation or course of action.

• Drawbacks can hinder progress or success in a project or task.

• They can be caused by limitations in resources, technology, or skills.

• Examples include lack of funding, outdated software, or inadequate training.

• Identifying drawbacks early on can help mitigate their impact on a project.

Fast forward is a feature that allows users to skip ahead in a video or audio file to a specific point.

• Fast forward allows users to quickly move forward in a video or audio file.

• Users can skip scenes or sections they are not interested in by using the fast forward feature.

• Commonly seen in media players, streaming services, and DVRs.

• Example: Pressing the fast forward button on a remote control to skip ahead in a movie.

Use Floyd's Cycle Detection Algorithm to detect loop in linked list.

• Initialize two pointers, slow and fast, both pointing to the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps in each iteration.

• If there is a loop, the slow and fast pointers will meet at some point.

• To find the start of the loop, reset one pointer to the head and move both pointers at the same pace until they meet aga

Storage class specifiers in C language define the scope and lifetime of variables.

• Storage class specifiers include auto, register, static, and extern.

• Auto variables are stored in the stack and have local scope.

• Register variables are stored in CPU registers for faster access.

• Static variables retain their value between function calls.

• Extern variables are declared in one file and can be accessed in another file.

Header files in C language are used to declare functions, variables, and constants that are defined in other source files.

• Header files are included at the beginning of a C program using the #include directive.

• They help in organizing code by separating declarations from the actual implementation.

• Common header files in C include , , and .

• Header files can also be created by the user to declare c...read more

Inheritance in Java allows a class to inherit properties and behavior from another class.

• Inheritance is achieved using the 'extends' keyword in Java.

• Subclasses can access the methods and fields of their superclass.

• Java does not support multiple inheritance, but a class can implement multiple interfaces.