Cognizant Project Associate Interview Questions, Process, and Tips

Q1. Difference between a session and a cookie?
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A session is a server-side storage of user data that is unique to each user, while a cookie is a client-side storage of user data that is stored on the user's browser.
• Session data is stored on the server, while cookie data is stored on the client's browser.

• Sessions are typically used for storing sensitive information like user authentication details, while cookies are often used for tracking user behavior or preference...read more
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Q2. Sessions are saved on the server-side. Cookies are saved on the client-side.
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Basic data structures and algorithms and one question from db script.

Q1. Dotnet related important topics Questions. Db questions, Angular questions .
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Q1. Normal HR questions and salary discussion.
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Q1. Write a program to display most frequent element in an array using Streams and Lambda expression. Difference between ArrayList and HashSet. What is the use of default method in interface? Difference betwee...read more
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Answers to technical interview questions on Java programming language.
• To display most frequent element in an array using Streams and Lambda expression, use Collectors.groupingBy() and Collectors.counting() methods.

• ArrayList is an ordered collection of elements while HashSet is an unordered collection of unique elements.

• Default methods in interface are used to provide a default implementation of a method that can be ove...read more
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Q2. What is the use of @Transactional and @Value? What is @Id? Explain lifecycle of a bean. Scopes of bean.
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Explaining @Transactional, @Value, @Id, bean lifecycle and scopes
• Transactional is used to manage transactions in Spring

• Value is used to inject values from properties files or environment variables

• Id is used to mark a field as the primary key of an entity

• Bean lifecycle includes instantiation, initialization, use and destruction

• Scopes of bean include singleton, prototype, request, session, and global session
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Q3. Difference between sleep and wait in Thread.
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Sleep and wait are methods used in Thread class in Java for pausing the execution of a thread.
• Sleep method pauses the execution of the current thread for a specified amount of time.

• Wait method pauses the execution of the current thread until another thread notifies it to resume.

• Sleep method does not release the lock on the object while wait method releases the lock on the object.

• Sleep method is used for delay whereas w...read more
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Q1. This round was mainly regarding finalizing the CTC and confirm the joining date.
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Q1. Queue management?
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Q2. Difference between error and exception
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Error is a compile-time issue while exception is a runtime issue in programming.
• Error is a compile-time issue detected by the compiler.

• Exception is a runtime issue that disrupts the normal flow of a program.

• Errors are generally caused by the environment in which the application is running.

• Exceptions are typically caused by the application itself.

• Example: Syntax error is an error, while NullPointerException is an except
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