Chemcleanzio (I) Technical Manager Interview Questions and Answers

Q1. Traverse a binary tree
Ans. 
Traversing a binary tree involves visiting each node in a specific order.
• There are three common traversal methods: in-order, pre-order, and post-order.

• In-order traversal visits the left subtree, then the root, then the right subtree.

• Pre-order traversal visits the root, then the left subtree, then the right subtree.

• Post-order traversal visits the left subtree, then the right subtree, then the root.

• Traversal can be done ...read more
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Q2. Design classes for a classroom
Ans. 
Design classes for a classroom
• Create a class for students

• Create a class for teachers

• Create a class for subjects

• Create a class for schedules

• Create a class for attendance
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Q3. Sprint process related questions
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Q1. Why you want to join Teleperformance?
Ans. 
I want to join Teleperformance because of its reputation for providing excellent customer service and opportunities for career growth.
• Teleperformance has a strong reputation for providing excellent customer service

• I am impressed by the company's commitment to employee training and development

• I believe that working at Teleperformance will provide me with opportunities for career growth and advancement
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Q2. Memorable day of your life?
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Q1. How soon you can join?
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Q1. Fake Interview, Didn't expect this from virtusa
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Q2. FakeInterviews conducted, Didn;t expect this from virtusa
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Q3. Virtusa Scammers
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60 min total
45-aptitude question
2-coding question

Q1. What is garbage collecture
Ans. 
Garbage collector is a program that automatically frees up memory by reclaiming memory occupied by objects that are no longer in use.
• Garbage collector is a part of the memory management system in programming languages like Java, C#, and Python.

• It helps prevent memory leaks by identifying and freeing up memory that is no longer needed.

• Garbage collection can be automatic or manual, depending on the programming language a
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Q2. Differnce between public key and foreign key
Ans. 
Public key is used for encryption and decryption in asymmetric cryptography, while foreign key is used to establish a relationship between tables in a database.
• Public key is used in asymmetric cryptography for secure communication.

• Foreign key is used in databases to establish relationships between tables.

• Public key is shared with others for encryption, while private key is kept secret for decryption.

• Foreign key links a...read more
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Hacker Rank test, problem solving. Java 8

Q1. Java 8 feature related questions.
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Q2. Jvm architecture and memory management
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Q3. Sql self join query and query tuning
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Q4. Spring boot microservices design pattern discussion
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Q1. Problem solving based on java and case study
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Q2. Team handling and management skills
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Q3. Docker and Orchetratetion framework
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Q4. Aws cloud and cicd and related technologies
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Q1. Java Collections
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Q2. Java8 Stream program
Ans. 
Java8 Stream program to filter even numbers and double them
• Use Stream to filter even numbers

• Use map to double the filtered numbers

• Use collect to collect the results into a list
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Q1. Completable future
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Q2. Microservice architecture
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Q1. Sql constraint , primary key, unique and foreign key
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