Vistaar Technologies Softwaretest Engineer Interview Questions and Answers for Experienced

Common aptitude question (time and distance, clock and calendar, numerical ability and reasoning)

Question related to dynamic programming, sorting and matrix manipulation

Q1. Common technical questions related to DBMS, OOP and networks
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Q1. Job location preference and why I would like to join the company
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Q1. C code to detect loop in linkedlist.
Ans. 
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...read more
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Q2. Storage class Specifiers in c language
Ans. 
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.
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Q3. Headerfile usage in c language
Ans. 
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
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2 coding were there based on DSA

Q1. Easy DSA question.
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Q2. Medium DSA question.
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Simple aptitude questions and multiple choice coding questions were asked.

Q1. Explanation about project
Ans. 
I have worked on a project to develop a mobile application for tracking fitness activities and providing personalized workout plans.
• Developed user-friendly interface for inputting and tracking fitness data

• Implemented algorithms to generate personalized workout plans based on user's goals and progress

• Integrated with wearable devices to automatically sync activity data

• Conducted thorough testing to ensure accuracy and rel...read more
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Q2. SQL queries which were easy
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Q3. Linked list and arrays
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1 hour aptitude test

Impact on social media

Q1. Automation Framework
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Q2. Which Framework you use Test NG, BDD. Explain?
Ans. 
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
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Logical Reasoning, Verbal communication