Cognizant Junior Software Engineer Interview Questions, Process, and Tips

The difficulty was easy to moderate. There were different sections like Qantativ Aptitude, Logical Reasoning, Essay writing

There were 7 debugging questions. The difficulty was easy to moderate. But total given time was only 20 minutes, so keep an eye on the watch while solving.

Q1. Basic Technical questions Like: 1. small coding questions in Python 2. Oops concept in both Python & Java and their differences. 3. array logic (C language)
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Q2. HR questions Like: 1. Why do I want to join CTS? 2. My future plans? 3. Why am I switching to IT from ECE background?
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Q3. And also asked several questions about my project. i.e: What was the project about, how we approached the solution, what Challenges were faced in the project, and How can we upgrade this project to a more ...read more
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Q1. Tell about stream API in java-8
Ans. 
Stream API in Java-8 is a powerful tool for processing collections of data.
• Stream API provides a functional approach to processing data.

• It allows for parallel processing of data.

• Stream API includes methods like filter, map, reduce, and collect.

• Example: List numbers = Arrays.asList(1, 2, 3, 4, 5); numbers.stream().filter(n -> n % 2 == 0).forEach(System.out::println);

• Example: List names = Arrays.asList("John", "Mary", "B...read more
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Q2. What version controls you are aware
Ans. 
I am aware of Git, SVN, Mercurial, and CVS.
• Git is the most popular and widely used version control system.

• SVN is a centralized version control system.

• Mercurial is similar to Git but with a simpler design.

• CVS is an older version control system that is not commonly used anymore.
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Q1. First introduced yourself
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Q2. What Ur favourite subject in college
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Great

The Aptitude level was medium

Q1. In Second Round both Technical and Hr both happened at the same time and interviewers were asked Medium level Question.
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Q2. Oops concept Data structure ( linked list, circular linked list, heap, stack, insert two no or delete no, merge sort, Quick sort.) Normalization, All keys, Sql Query. 2 code. Palindrome no, swapping two ...read more
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Q1. Hr asked Normal Question
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There were 2 rounds of interview 1st round there were few very Basic Aptitude Questions, and in second round basic OOPs questions that's all.

Q1. Explain Polymorphism and write a program to show it.
Ans. 
Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were of the same class.
• Polymorphism is achieved through method overriding and method overloading.

• Method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.

• Method overloading is when a class has two or more methods with the ...read more
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Q2. Write a query for fetching the second highest salary from the table.
Ans. 
Query for fetching the second highest salary from a table.
• Use ORDER BY and LIMIT to fetch the second highest salary.

• Exclude the highest salary using subquery or WHERE clause.
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