Yubi Quality Engineer Interview Questions and Answers

Easy to Average question on quant and logical

Easy pattern and string medium question

Q1. OOPS and DBMS SQL
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Q1. Basic for Core java
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Q2. Basics of selenium
Ans. 
Selenium is a powerful tool for automating web applications for testing purposes, supporting multiple browsers and programming languages.
• Selenium supports multiple programming languages like Java, Python, C#, and Ruby.

• It can automate browsers like Chrome, Firefox, and Safari.

• Selenium WebDriver is the core component that interacts with the browser.

• Example: Using WebDriver in Python to open a webpage: 'from selenium impo...read more
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Q1. More on framework side
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Q2. Few question on Manual testing
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Q1. Intro about yourself
Ans. 
I am a Senior Engineer with 10+ years of experience in software development, specializing in backend systems and cloud technologies.
• 10+ years of experience in software development

• Specialize in backend systems and cloud technologies

• Strong problem-solving skills

• Experience with large-scale systems

• Proficient in programming languages like Java, Python, and SQL
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Q2. Discussion on Job role
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Pattern programming, javascriptt based questions

Q1. Browser specific questions
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Q1. Level 2 IT support Engineer questions
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Q2. Brief explanation about L2 level of work
Ans. 
L2 level of work involves intermediate level tasks and responsibilities in a specific field or domain.
• L2 work requires a deeper understanding and expertise compared to L1 work.

• It involves troubleshooting and resolving complex issues.

• L2 engineers often provide support and guidance to L1 engineers.

• They may be responsible for implementing and maintaining systems or processes.

• L2 work requires strong problem-solving and ana...read more
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Q1. L2 practical questions
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Q2. Brief explanation about experience
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Round duration - 90 minutes
Round difficulty - Easy

Nice environment

Q1. 
Zigzag Traversal of Binary Tree
Given a binary tree with integer values in its nodes, your task is to print the zigzag traversal of the tree.
Note:
In zigzag order, level 1 is printed from left to right...read more
Ans. 
Implement a function to print the zigzag traversal of a binary tree.
• Traverse the tree level by level, alternating the direction of traversal for each level.

• Use a queue to keep track of nodes at each level.

• Print the nodes in zigzag order as per the given pattern.
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Round duration - 90 minutes
Round difficulty - Medium

Nice Environment

Q1. 
Prime Numbers Identification
Given a positive integer N, your task is to identify all prime numbers less than or equal to N.
Explanation:
A prime number is a natural number greater than 1 that has no po...read more
Ans. 
Identify all prime numbers less than or equal to a given positive integer N.
• Iterate from 2 to N and check if each number is prime

• Use the Sieve of Eratosthenes algorithm for better efficiency

• Optimize by only checking up to the square root of N for divisors
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Q2. What was the use of DBMS in your project, and how did you handle the problems that arose?
Ans. 
DBMS was used to store and manage data in the project, handled problems by optimizing queries and database design.
• Used DBMS to store and manage project data efficiently

• Optimized queries for better performance

• Designed database schema to handle data effectively

• Resolved concurrency issues by implementing proper locking mechanisms
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