Infosys Senior Systems Engineer Interview Questions, Process, and Tips

Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types.

• Examples include method overloading and method overriding in object-oriented programming.
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Q2. What is abstraction
Ans. 
Abstraction is the process of hiding complex details and showing only the essential features of an object or system.
• Abstraction allows us to focus on the important aspects while ignoring unnecessary details

• It helps in managing complexity by breaking down a system into smaller, more manageable parts

• Abstraction is a key concept in object-oriented programming, where classes provide a level of abstraction for data and beha...read more
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Mainly verbal and reasoning questions

Q1. Tell about normalization
Ans. 
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down data into smaller, more manageable parts.

• It helps in reducing data redundancy by storing data in a structured manner.

• Normalization ensures data integrity by minimizing the chances of inconsistencies.

• There are different levels of normalization such as 1NF, 2NF, 3NF, and BCNF.

• ...read more
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Q2. What is aws concepts.
Ans. 
AWS concepts refer to the fundamental principles and components of Amazon Web Services cloud platform.
• AWS offers a wide range of cloud services such as computing power, storage options, and networking capabilities.

• Key concepts include EC2 (Elastic Compute Cloud), S3 (Simple Storage Service), and VPC (Virtual Private Cloud).

• AWS provides scalability, flexibility, and cost-effectiveness for businesses of all sizes.

• Underst...read more
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Q1. Just location is fine?
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Q2. What are your hobbies?
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Q1. What is closure
Ans. 
Closure is the ability of a function to remember and access its lexical scope even when it is executed outside that scope.
• Closure allows a function to access variables from its outer function even after the outer function has finished executing.

• It is created when a function is defined within another function and the inner function is returned or passed as an argument.

• Example: function outerFunction() { let outerVar = '...read more
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Q2. What is hoisting
Ans. 
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during the compilation phase.
• Hoisting applies to both variable and function declarations.

• Variables declared with var are hoisted to the top of their scope, but not their assignment.

• Function declarations are fully hoisted, including their definition.

• Hoisting does not apply to let and const declarati
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Online link with apti and a coding problem

Q1. Mostly related to the role java8 features, streams etcc
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