Vistaar Technologies Softwaretest Engineer Interview Questions and Answers

General manager of a company that is a member of a group of companies and a member is responsible for managing and managing a large company that has the capacity for managing a company and managing the entire company in one place and a small guy business that has been in business in the last several years is responsible

Q1. Actually there’s no reason to think it’s a bad sign that you can’t get a good job in your life because you’re going to get paid for the rest the year if you have a job that you’re going into the future you...read more
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Q2. Y c malloc function returns and y stack operates in reverse
Ans. 
The y c malloc function returns memory from the heap while y stack operates in reverse.
• The y c malloc function is used to allocate memory dynamically from the heap.

• The y stack operates in reverse, meaning the last item pushed onto the stack is the first item popped off.

• This can cause issues if the programmer is not careful with memory allocation and stack usage.
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It was easy to crack it

3 coding questions based on SQL

Q1. What is database in python
Ans. 
A database in Python is a structured collection of data that allows for efficient storage, retrieval, and manipulation of information.
• Python provides various libraries for interacting with databases such as SQLite, MySQL, and PostgreSQL.

• Databases in Python can be accessed using SQL queries or through object-relational mapping (ORM) libraries like SQLAlchemy.

• Data in a Python database can be stored in tables, rows, and c...read more
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Q2. SQL query and database
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Q1. Whats is Denpendency injection?
Ans. 
Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
• Allows for easier testing by injecting mock dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Examples: Constructor injection, Setter injection, Interface injection
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Q2. What is middleware
Ans. 
Middleware is software that acts as a bridge between different applications, allowing them to communicate and share data.
• Middleware facilitates communication between different software applications

• It can handle tasks such as message queuing, data transformation, and security

• Examples of middleware include message brokers like RabbitMQ, ESBs like MuleSoft, and API gateways like Kong
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Q1. Inheritance in Java
Ans. 
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.
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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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Q1. In this round ask most of the question from string manipulation. It is a DSA round
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Q2. Frequency of each character
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The frequency of each character in a given string is calculated and displayed.
• Iterate through the string and count the occurrences of each character

• Store the counts in a data structure like a hashmap or array

• Return the frequency of each character
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Q1. In this ask about your salary expectation. DSA question DBMS Shellscript
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Q2. DBMS join query
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