Vistaar Technologies Softwaretest Engineer Interview Questions and Answers for Experienced

Q1. What is iscsi in san
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Q2. What is raid and explain r5
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Hackerank general coding assessment

Q1. Dynamic programs reverse strong, palindromes, separating characters
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Q1. Role specific questions
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Q1. Basics questions on experience related
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Q1. Short code was given to test the coding skills. Example - Leap year
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Q1. What is Dependency Injection?
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Dependency Injection is a design pattern in which components are given their dependencies rather than creating them internally.
• Allows for easier testing by providing mock dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Examples: Constructor injection, Setter injection, Interface injection
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Q2. How to handle exception in java
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In Java, exceptions can be handled using try-catch blocks to catch and handle specific exceptions.
• Use try-catch blocks to catch exceptions and handle them gracefully

• Use multiple catch blocks to handle different types of exceptions

• Use finally block to execute code regardless of whether an exception is thrown or not

• Throw custom exceptions using throw keyword
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Q1. In Java8, different between flatmap and map
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map transforms each element in a stream, while flatMap transforms each element into multiple elements
• map applies a function to each element in a stream and returns a new stream of the results

• flatMap applies a function that returns a stream for each element in the original stream, then flattens the streams into a single stream

• Example: map - stream.map(x -> x * x), flatMap - stream.flatMap(str -> Arrays.stream(str.split(
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Q2. How to handle the ConcureentModificationException
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ConcurrentModificationException occurs when a collection is modified while iterating over it.
• Use Iterator to iterate over the collection instead of foreach loop.

• If modification is necessary, use Iterator's remove() method instead of collection's remove() method.

• Consider using synchronized collections or ConcurrentHashMap to avoid ConcurrentModificationException.
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DataStructure C OS RTOS HARDWARE

Q1. String compare | string copy repeTED ELEMENT IN ARRAY LINKED LIST
Ans. 
The question is about string comparison, string copying, repeated elements in an array, and linked lists.
• String comparison involves comparing two strings to check if they are equal or not.

• String copying refers to creating a copy of a string.

• Finding repeated elements in an array involves identifying elements that occur more than once.

• Linked lists are data structures that consist of nodes linked together.
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Q1. More deep on domain knowledge os processor ARM arch
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Q1. Basic of language, a live coding exercise
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Q1. It was a Managerial round
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Q1. It was Normal HR round
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Q1. Basics of your technical skills
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Q1. More Projects related questions
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