Infosys Interview Questions, Process, and Tips

Q1. What is javascipty ??
Ans. 
JavaScript is a programming language commonly used for creating interactive effects within web browsers.
• JavaScript is a high-level, interpreted programming language.

• It is commonly used for client-side web development.

• JavaScript allows for dynamic content and interactive elements on websites.

• Examples of JavaScript frameworks include React, Angular, and Vue.
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Q1. What is react js?
Ans. 
React JS is a JavaScript library for building user interfaces.
• React JS is developed and maintained by Facebook.

• It allows developers to create reusable UI components.

• React uses a virtual DOM for better performance.

• It follows a component-based architecture.

• React can be used for building single-page applications.
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Q1. Difference between concrete class and abstract class
Ans. 
Concrete class is a class that can be instantiated, while abstract class cannot be instantiated and serves as a blueprint for other classes.
• Concrete class can have both concrete and abstract methods, while abstract class can only have abstract methods.

• Concrete class can be directly used to create objects, while abstract class cannot be directly used to create objects.

• Concrete class provides implementation for all its m...read more
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Q2. Explain functional interface
Ans. 
A functional interface is an interface that contains only one abstract method.
• Functional interfaces are used in Java to implement lambda expressions and functional programming.

• They provide a way to define behavior that can be passed as an argument or returned from a method.

• Functional interfaces can have default methods and static methods, but only one abstract method.

• Examples of functional interfaces in Java include Ru
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Q3. Explain inheritance
Ans. 
Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows for code reuse and promotes modularity.

• The class that is being inherited from is called the superclass or base class.

• The class that inherits from the superclass is called the subclass or derived class.

• The subclass can access the public and protected members of the superclass.

• Inhe...read more
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Q4. Features of java 8
Ans. 
Java 8 introduced several new features including lambda expressions, streams, and default methods.
• Lambda expressions enable functional programming in Java.

• Streams provide a new way to process collections of data.

• Default methods allow interfaces to have concrete methods.

• Other features include the Optional class, Date and Time API, and Nashorn JavaScript engine.
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Q5. How you can protect data in transit
Ans. 
Data in transit can be protected through encryption and secure communication protocols.
• Use encryption to encode the data during transmission

• Implement secure communication protocols such as HTTPS, SSL/TLS

• Utilize VPNs (Virtual Private Networks) to establish secure connections

• Apply firewall rules and network segmentation to prevent unauthorized access

• Regularly update and patch software and systems to address vulnerabiliti
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Speed/Time, Mass/ Weight, etc

There were total 2 question

Mix of aptitude ,vocabulary , pseudo coding questions and data interpretation questions. overall the test will be easy to moderate

Q1. Questions related to sql oops concept questions personal projects done in college easy to medium level of coding( pattern, prime numbers, factorial etc)
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Q1. Basic Sql questions were asked
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Q2. Employees who are earning more than their manager
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