UST Sdet Engineer Interview Questions and Answers

It was actually a mix of aptitude and technical. 1st round included aptitude, English, essay writing and coding questions.

Q1. This was an online technical interview round. Questions were moderate on difficulty level. The interviewer was friendly and asked questions from the resume.
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Q1. Technical+HR round
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Q1. 2 sum problem in different approach
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Q2. Maximum sub array sum
Ans. 
Find the maximum sum of a contiguous subarray within an array of integers.
• Use Kadane's algorithm to find the maximum subarray sum efficiently.

• Initialize two variables - maxEndingHere and maxSoFar.

• Iterate through the array and update the variables accordingly.

• Example: Input [1, -2, 3, 4, -1, 2, 1, -5, 4], Output: 10 (subarray [3, 4, -1, 2, 1])
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Q1. Design LLD for factory pattern
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Factory pattern is a creational design pattern that provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.
• Create an interface or abstract class to define the factory method

• Create concrete classes that implement the interface or extend the abstract class

• Factory class should have a method that returns an object of the interface type based on in
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Q1. Tell me about yourself?
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Q2. Salary expectations?
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Q1. Based on resume questions.
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Q2. Difference between xpath and css selectors
Ans. 
XPath is a language for selecting nodes in an XML document, while CSS selectors are used to select HTML elements.
• XPath is more powerful and flexible than CSS selectors

• CSS selectors are faster and easier to write than XPath

• XPath can traverse both upwards and downwards in the document tree, while CSS selectors can only traverse downwards

• XPath can select elements based on their attributes, text content, and more, while CS...read more
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Q1. Selenium architecture?
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Q2. Automation framewrorks, Programming languages
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Q1. Tell me about yourself
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Medium level coding question on leetcode and codechef are good to prepare to clear the test.

Q1. You need to have good knowledge on all the core subjects from CSE Department and coding
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Q2. Database questions, java opps cocncepts, coding question based on arrays.
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No of chars occurrences in a string

Q1. Explain about framework
Ans. 
A framework is a set of guidelines, libraries, and tools that help in developing and executing automated tests efficiently.
• Framework provides a structure for organizing test scripts, data, and reports.

• It promotes reusability, maintainability, and scalability of test automation code.

• Types of frameworks include data-driven, keyword-driven, hybrid, and behavior-driven development (BDD).

• Examples of popular test automation ...read more
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Q2. Waits in selenium
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In Selenium, waits are used to pause the execution of the test script for a certain amount of time or until a certain condition is met.
• Implicit Wait: Waits for a certain amount of time before throwing a NoSuchElementException.

• Explicit Wait: Waits for a certain condition to occur before proceeding further.

• Fluent Wait: Waits for a condition with a specified frequency and timeout.

• Thread.sleep(): Pauses the execution for a
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Q1. Normal Hr questions
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