Future Career Solutions Test Engineer Interview Questions and Answers for Experienced

Q1. Find the leaves of the tree.
Ans. 
Leaves of a tree are the nodes with no children in a tree data structure.
• Traverse the tree and identify nodes with no children.

• Use depth-first search or breadth-first search algorithms to find leaves.

• Examples: In a binary tree, leaves are nodes with no left or right child.

• In a general tree, leaves are nodes with no children in their child list.
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Q2. Find the LCA of tree.
Ans. 
The Lowest Common Ancestor (LCA) of a tree is the shared ancestor of two nodes farthest from the root.
• Start from the root and traverse the tree to find the paths from the root to the two nodes.

• Compare the paths to find the last common node between them, which is the LCA.

• If one of the nodes is an ancestor of the other, then the ancestor node is the LCA.
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Q1. What projects you worked upon?
Ans. 
I have worked on projects involving web development, mobile app development, and data analysis.
• Developed a web application using React and Node.js for a client in the e-commerce industry

• Created a mobile app using Flutter for a startup in the healthcare sector

• Performed data analysis on customer behavior using Python and SQL for a marketing company
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Q2. What internships you did?
Ans. 
I completed internships at ABC Company and XYZ Company during my undergraduate studies.
• Interned at ABC Company working on web development projects

• Interned at XYZ Company assisting with software testing and quality assurance

• Gained hands-on experience in coding, debugging, and problem-solving
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Interviewed with team members and discussed coding standards and linters

Given a take-home assignment and built a card game

1 hour simple questions based on DSA

Q1. About your prior experience
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Q2. Challenging task at your workplace
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Q1. Just normal discussion
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Q1. What is ACID in DBs ?
Ans. 
ACID stands for Atomicity, Consistency, Isolation, and Durability in databases.
• Atomicity ensures that all operations in a transaction are completed successfully or none at all.

• Consistency ensures that the database remains in a consistent state before and after the transaction.

• Isolation ensures that multiple transactions can be executed concurrently without affecting each other.

• Durability ensures that once a transaction...read more
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Q2. What is the difference in checked and unchecked exceptions ?
Ans. 
Checked exceptions are checked at compile time while unchecked exceptions are not checked at compile time.
• Checked exceptions are subclasses of Exception class except RuntimeException and its subclasses.

• Unchecked exceptions are subclasses of RuntimeException and Error classes.

• Checked exceptions must be caught or declared in the method signature using 'throws' keyword.

• Unchecked exceptions do not need to be caught or decl...read more
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Q3. Find the min difference between any two integers of 2 sorted list
Ans. 
To find the minimum difference between any two integers of 2 sorted lists, iterate through both lists simultaneously and keep track of the minimum difference.
• Iterate through both sorted lists simultaneously

• Keep track of the minimum difference found so far

• Update the minimum difference if a smaller difference is found
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