Unicommerce Esolutions QA Engineer Interview Questions and Answers for Experienced

General aptitude with some math questions

Q1. What is smoke testing
Ans. 
Smoke testing is a preliminary testing to check if the basic functionalities of a software application are working fine.
• Smoke testing is a quick and shallow testing of the critical functionalities of an application.

• It is usually performed before more in-depth testing to ensure that the application is stable enough for further testing.

• The main purpose of smoke testing is to verify that the application is ready for more ...read more
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Q2. What is regression testing
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Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.
• Regression testing is performed after code changes to verify that the existing functionality still works correctly.

• It helps in identifying any defects introduced by new code changes.

• Automated testing tools are often used for regression testing to save time and effort.

• R...read more
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Q1. Asked about basics javascript and ops concepts
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Q1. There was one Technical round and it was scheduled for 45 min but it took 1 hour.
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Q2. API testing, Tricky questions on API and Selenium, Selenium practical test
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Advance aptitude questions which took 1 hour to solve

Advance Coding questions

Q1. What is multithreading in java?
Ans. 
Multithreading in Java allows multiple threads to execute concurrently within a single program.
• Multithreading helps in improving the performance of applications by utilizing multiple CPUs or CPU cores.

• Each thread runs independently and shares the same memory space.

• Java provides built-in support for multithreading through the java.lang.Thread class or implementing the java.lang.Runnable interface.

• Example: Creating a new...read more
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Q2. Detect a cycle in linkedList
Ans. 
Detecting a cycle in a linked list by using two pointers approach.
• Use two pointers approach - slow pointer moves one step at a time, fast pointer moves two steps at a time.

• If there is a cycle, the two pointers will eventually meet at some point.

• Check if the fast pointer reaches the end of the list (null) before meeting the slow pointer to determine if there is a cycle.
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Q1. Asked question related to selenium, java, API
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Java questions based on string and 2d array

Q1. Selenium, java , manual , API related question, Program asked to find out duplicate
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Q2. Oops concept, syntax of screenshot parameterization
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Q1. Manager round ask project related question also some technical
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