Qentelli Quality Engineer Interview Questions and Answers

Q1. What are Promises
Ans. 
Promises are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used in JavaScript to handle asynchronous operations.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() to handle success and .catch() to handle errors.

• Example: Fetching data from an API returns a Promise that resolves with the data or rejects with an erro
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Q2. Is Node.js Single Threaded or Multiple Threaded
Ans. 
Node.js is single threaded, but uses multiple threads for I/O operations.
• Node.js uses a single thread to handle all JavaScript code execution.

• It uses multiple threads from a thread pool to handle I/O operations asynchronously.

• This allows Node.js to handle high concurrency without blocking the main thread.

• Example: When reading a file, Node.js will use a separate thread from the pool to perform the I/O operation.
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Reverse the Array of Strings

Q1. There were multiple questions on azure cloud and projects i worked on
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Q2. Sql queries and scenario based azure questions
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Q1. Technical questions related to testing
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Q1. Self introduction and salary discussion
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Q1. Where do you see yourself in 5 years?
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Q2. Tell me about yourself.
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Q1. Test life cycle
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Q1. Testing artifact
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Q1. Salary negotiations
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Very tough asked hacker rank

Q1. Asked about automatin testgin questinos
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Q1. Salary discussino
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Q1. Explain different type of selenium waits
Ans. 
Selenium waits are used to make the test scripts wait for a certain condition to be met before proceeding.
• Implicit Wait: Waits for a certain amount of time before throwing an exception if the element is not found.

• Explicit Wait: Waits for a certain condition to be met before proceeding further in the code.

• Fluent Wait: Waits for a certain condition with a defined maximum amount of time to wait for.

• Thread.sleep(): Pauses
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Q2. Explain polymorphism and where does it apply in selenium.
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism in Selenium allows for the same test script to be used for different web elements.

• It can be achieved through method overloading or method overriding in Selenium.

• For example, using the same click() method to click on a button, link, or dropdown in Selenium tests.
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Q1. Smoke testing asked
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Q2. Very basic not formatted
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Q1. Not any special question
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