Bacancy Technology QA Engineer Interview Questions, Process, and Tips

Q1. How are you different from other testers ?
Ans. 
I have a strong background in automation testing and a keen eye for detail.
• Extensive experience in automation testing using tools like Selenium and Appium

• Ability to write complex test scripts and perform regression testing efficiently

• Strong analytical skills to identify and troubleshoot issues effectively

• Proven track record of finding critical bugs missed by other testers
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Q1. What's is authentication and authorisation
Ans. 
Authentication is the process of verifying the identity of a user, while authorization is the process of granting access to specific resources.
• Authentication confirms the identity of a user through credentials such as username and password.

• Authorization determines what resources a user can access based on their role or permissions.

• Examples of authentication include logging into a website or entering a PIN at an ATM.

• Exa...read more
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Round duration - 40 minutes
Round difficulty - Medium

Asked about time complexity of algorithm, puzzles, DBMS, cutting edge technologies etc. What are indexes?

Q1. 
Flip Bits Problem Explanation
Given an array of integers ARR of size N, consisting of 0s and 1s, you need to select a sub-array and flip its bits. Your task is to return the maximum count of 1s that can b...read more
Ans. 
Given an array of 0s and 1s, find the maximum count of 1s by flipping a sub-array at most once.
• Iterate through the array and keep track of the maximum count of 1s obtained by flipping a sub-array.

• Consider flipping a sub-array from index i to j and calculate the count of 1s in the resulting array.

• Return the maximum count of 1s obtained by flipping a sub-array at most once.
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Round duration - 20 minutes
Round difficulty - Medium

Asked 1 standard algorithm

Q1. 
Number of Islands Problem Statement
You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...read more
Ans. 
Count the number of islands in a 2D matrix of 1s and 0s.
• Iterate through the matrix and perform depth-first search (DFS) to find connected 1s.

• Mark visited cells to avoid redundant traversal.

• Increment island count whenever a new island is encountered.
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