Unify Technologies Test Engineer Interview Questions and Answers for Experienced

The test was in hackerrank platform, it was moderate level.

Dsa problems dp and tress problem

Q1. Tell me about your self
Ans. 
I am a passionate software engineer with 5 years of experience in developing web applications using various technologies.
• 5 years of experience in software development

• Proficient in developing web applications

• Skilled in using various technologies

• Passionate about software engineering
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Q2. Projects and intership
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Dp, trees and basic time complexity

Q1. Tell me about your self
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment
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Q2. Projects and intership
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Questions based or percentage, profit loss, ratio

Q1. Explain about stacks
Ans. 
Stacks are a data structure that follows the Last In First Out (LIFO) principle.
• Elements are added and removed from the top of the stack

• Common operations include push (add element) and pop (remove element)

• Stacks can be implemented using arrays or linked lists

• Examples of stack usage include function call stack and undo/redo functionality in text editors
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Q2. To find middle number in the linked list
Ans. 
To find the middle number in a linked list.
• Traverse the linked list using two pointers, one moving twice as fast as the other.

• When the fast pointer reaches the end, the slow pointer will be at the middle node.

• If the linked list has even number of nodes, there will be two middle nodes. Return either one.
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Q1. Introduction , hobbies, goals
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Q2. Strength, weakness, short term and long term goals
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There are three sections: -
1. Quants
2. English
3. Reasoning
All sections are accessible medium but you have maintained the speed and accuracy.
after that coding snippet are in java/python.

Code snippets are there in coding sections.

Aptitude test was esay.i passed that

We have upload a vedio based on given topic

Q1. 1 coding questiin 3 logical apti question Dbms concepts
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Q2. Foriegn key Primary key
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General and basic data structure question

Q1. Coding over the video call
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Q2. Java programs for strings , palindrome etc
Ans. 
Java programs for strings, palindrome, etc.
• Use the StringBuilder class to manipulate strings efficiently.

• To check if a string is a palindrome, compare it with its reverse.

• To count the occurrences of a substring in a string, use the indexOf method in a loop.

• To split a string into an array of substrings, use the split method.
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Q3. Projects questions on which you have worked
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Q4. Explanation skill will also be considered
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Q1. Find wheteher the given number is fibonacci or not
Ans. 
To determine if a number is a Fibonacci number or not.
• Check if 5*n^2 + 4 or 5*n^2 - 4 is a perfect square

• If either of the above conditions is true, the number is a Fibonacci number

• Example: 5 is a Fibonacci number as 5*5 - 4 = 21 which is a perfect square
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Q2. How will you add caching to improve fast response
Ans. 
Implement caching by storing frequently accessed data in memory to improve response time.
• Identify frequently accessed data that can be cached

• Choose an appropriate caching strategy (e.g. in-memory caching, distributed caching)

• Implement caching mechanisms such as Redis or Memcached

• Set expiration policies for cached data to ensure freshness

• Monitor cache performance and adjust as needed
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