Cognizant Software Engineer Interview Questions, Process, and Tips

Multiple questions related to basic program

Q1. Writing length of string without length method
Ans. 
Use a loop to iterate through each character in the string and count the characters until reaching the end.
• Iterate through each character in the string using a loop

• Increment a counter for each character encountered

• Stop when reaching the end of the string
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Q1. Dotnet related question and various versions
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Q2. Sql server related questions
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Q1. With subject questions,joins, triggers,packages, procedure and functions.
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Q2. What is sequence
Ans. 
A sequence is a ordered list of elements or events following a specific pattern or order.
• A sequence can be in ascending or descending order.

• Examples include Fibonacci sequence, arithmetic progression, and DNA sequence.

• Sequences can be finite or infinite.
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Q3. What is views and materialized views
Ans. 
Views and materialized views are database objects that store queries and results for easy access and improved performance.
• Views are virtual tables created by a query, allowing users to access specific data without storing it physically.

• Materialized views are physical copies of query results that are stored on disk, improving performance by reducing the need to re-run the query.

• Materialized views need to be refreshed pe...read more
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Q4. What is the differences joins.
Ans. 
Joins are used in databases to combine rows from two or more tables based on a related column between them.
• Inner Join: Returns rows when there is at least one match in both tables.

• Left Join (or Left Outer Join): Returns all rows from the left table and the matched rows from the right table.

• Right Join (or Right Outer Join): Returns all rows from the right table and the matched rows from the left table.

• Full Join (or Full...read more
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Q5. What is difference procedure and functions.
Ans. 
Procedures do not return values while functions return values.
• Procedures are a set of instructions that perform a specific task without returning a value.

• Functions are a set of instructions that perform a specific task and return a value.

• Procedures are called using the CALL statement in SQL.

• Functions are called by using their name followed by parentheses containing any arguments.
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Easy questions and timing is sufficient

Q1. Asp.net mvc, and basics
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Q1. Basic. Net questions
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These test are conduct by HackerRank. It is programming level knowledge test.

Q1. Basic Core java and Spring Boot Questions in that Rounds, Also Knowledge check for programming. There is a program that we have to run successfully and scenario type Questions are asked by interviewer.
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Q2. What is Multithreading?
Ans. 
Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for better performance and responsiveness in software applications.
• Multithreading allows multiple threads to run concurrently within the same process.

• Each thread has its own stack and program counter, but shares the same memory space.

• Multithreading can improve performance by utilizing multiple CPU cores efficiently.

• Examples of mul...read more
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Q3. OOPS concepts with real time examples
Ans. 
OOPS concepts are fundamental to software engineering, with examples like inheritance, encapsulation, and polymorphism.
• Inheritance: A child class inherits properties and behaviors from a parent class. For example, a Car class can inherit from a Vehicle class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. For example, a BankAccount class with private variables and public methods.

• Po...read more
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Q4. Describe the newly added features in Java 8?
Ans. 
Java 8 introduced features like lambda expressions, functional interfaces, streams, and default methods.
• Lambda expressions allow you to write code in a more concise way.

• Functional interfaces can have only one abstract method and are used with lambda expressions.

• Streams provide a way to work with sequences of elements.

• Default methods allow interfaces to have method implementations.

• Example: Lambda expression - (int a, in...read more
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Q5. What is the Default Methods and why it is required?
Ans. 
Default Methods are methods in interfaces with implementation, introduced in Java 8.
• Introduced in Java 8 to provide backward compatibility for interfaces

• Allows adding new methods to interfaces without breaking existing implementations

• Default methods can be overridden in implementing classes

• Example: default void display() { System.out.println("Default method"); }
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Q6. What is autowired annotation?
Ans. 
Autowired annotation is used in Spring framework to automatically inject dependencies into a bean.
• Autowired annotation is used to automatically wire up dependencies in Spring framework.

• It eliminates the need for manual wiring of dependencies in the code.

• Autowired annotation can be used on fields, constructors, or methods.

• Example: @Autowired private UserService userService;
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Q1. Tell me your self introduction?
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Q2. Why Do you want to work our company?
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Q3. What are your strength and weakness?
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Q4. What is your expected salary you wants?
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