Cognizant Software Engineer Level 1 Interview Questions and Answers

Round 1- Foundation Test:

Total Question- 20 ques
Time allotted- 75 mins (shared)
Few important Topics:

Quantitative Aptitude

Number System, LCM & HCF
Divisibility
Numbers & Decimal Fractions
Geometry
+ More Topics

Round 2- Advanced Test:

Total Question-10 ques
Time allotted- 35 mins (shared)
Few important Topics:

Quantitative Aptitude

Ages
Allegations and Mixtures
Averages
Clocks and Calendars
Equations
Percentages
+ More Topics

Q1. 1.Tell me about yourself.
Ans. HR interviews normally start off with this question since it is the one that is usually asked the most often. The right response can boost your chances of making a positive first impression. Interviewers often ask this question so that you can provide a summary of your resume so they can get an idea of what you find most valuable.
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Q2. 2. What are your strengths and weaknesses?
Ans. Answering this question requires skill and ingenuity. With this question, you will be able to acknowledge weaknesses that you look forward to improving. Public speaking, time management, self-criticism, etc., are some common areas of weakness that will not negatively reflect on your selection. The tone should be positive. Always speak only of true forces and never state strengths that you cannot verify. Avoid saying an...read more
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Q3. 3.Who is the founder of TCS?
Ans. TATA Group was founded by Jamsetji Nusserwanji Tata in 1869 as a private organization. Jehangir Ratanji Dadabhoy Tata (JRD Tata) was the driving force behind the expansion of this group into TCS, which was established in 1968. At the present time, Mr Natarajan Chandrasekaran is the Chairman of the TCS
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Q4. 4. What are the competitors of TCS globally and in India?
Ans. Login to experience InterviewBit Practice Improve your coding skills with our resources Resources Experience learning Contests Compete in popular contests with top coders Online IDE Checkout our improved IDE Free Mock Assess yourself and prepare for interviews Scaler Explore Offerings by SCALER Events Checkout Scaler Academy Events New Get a Free personalised Career Roadmap from Scaler Show My Career Plan 90000+ Dev...read more
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20-30 aptitude questions like direction, time and speed, calculating intrest

It consists 2-3 coding questions there is no language barrier so you can code in any language

Q1. Where do you see yourself in next 5 year
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Q2. What projects you have work on till now
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Q1. What are oops concepts in java, explain real time scenario
Ans. 
OOPs concepts in Java include inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance allows a subclass to inherit properties and methods from a superclass.

• Polymorphism allows objects to take on multiple forms and behave differently based on their context.

• Encapsulation hides the implementation details of an object and only exposes necessary information.

• Abstraction allows for the creation of abstract class...read more
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Q2. Uses of interface, inheritance
Ans. 
Interfaces define contracts for behavior, while inheritance allows for code reuse and polymorphism.
• Interfaces allow for loose coupling and abstraction, enabling multiple implementations of the same behavior.

• Inheritance allows for code reuse and extension of existing classes, reducing code duplication.

• Polymorphism allows objects of different classes to be treated as if they were of the same class, simplifying code and i
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Q3. SQL query for join of tables
Ans. 
SQL query for joining tables
• Use JOIN keyword to combine two or more tables based on a related column

• Specify the columns to be selected using SELECT keyword

• Use ON keyword to specify the condition for joining the tables

• Different types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN
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Q4. Java concepts used in your project
Ans. 
Used Java concepts such as inheritance, polymorphism, and exception handling in my project.
• Implemented inheritance to create a base class and derived classes with specific functionalities.

• Utilized polymorphism to allow objects of different classes to be treated as if they were of the same class.

• Implemented exception handling to handle errors and prevent program crashes.

• Used interfaces to define a set of methods that a ...read more
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Q5. Overloading vs overriding, practical uses
Ans. 
Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
• Overloading is used to provide different ways to call a method with different parameters

• Overriding is used to provide a specific implementation of a method in a subclass

• Overloading is resolved at compile-time while overriding is r...read more
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Q1. What is java? What is variable?
Ans. 
Java is a popular programming language used for developing various applications. A variable is a named memory location used to store data.
• Java is an object-oriented language

• It is platform-independent

• Variables in Java have a specific data type

• Variables can be assigned values and their values can be changed

• Example: int age = 25; String name = "John";
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Q2. What is inheritance? types of inheritance
Ans. 
Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows code reuse and promotes code organization.

• There are different types of inheritance: single inheritance, multiple inheritance, multilevel inheritance, and hierarchical inheritance.

• Single inheritance involves a class inheriting from a single base class.

• Multiple inheritance involves...read more
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Q3. 1.Java is a high level language 2.java is a programme is called a set of instructions 3.java run time environment (jre) 4.java is a platform independent. Variable: A variable which is container that some d...read more
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Q4. Inheritance; 1.Acquring the properties of parent class to the child class with out changeing the properties of parent class is known as inheritance 2.inheritanc is a is relationship 3.extends keyword is us...read more
Ans. 
Inheritance is acquiring properties of parent class to child class without changing parent class properties. It is classified into 5 types.
• Inheritance is a way to reuse code and establish a relationship between classes

• The 'extends' keyword is used to implement inheritance in Java

• Examples of inheritance include a 'Car' class inheriting properties from a 'Vehicle' class

• Single level inheritance involves one parent class a...read more
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May I about you ? Which your qualification and which stream

Q1. Questions on OOPS mainly inheritance Questions on Core Java Tricky questions on collections Questions on Java 8
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Q2. Questions on JavaScript What is a closure
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Q1. Constructor, Interface, Abstraction, Spring boot, Microservices
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Q2. What is super keywords? What is Interface? What is constructor? What is use of @Componentscan ?
Ans. 
Answers to common Java Developer interview questions.
• super keyword is used to call a method or constructor of the parent class

• Interface is a collection of abstract methods and constants that can be implemented by a class

• Constructor is a special method used to initialize objects

• @Componentscan is used to scan for Spring components in a specified package
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Q1. They asked all technical questions again and also had discussion on project
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Q1. We had a discussion on CTC part and last organization.
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