Infosys Assistant System Engineer Trainee Interview Questions and Answers

Q1. What are the 4 pillars of C++ ?
Ans. 
The 4 pillars of C++ are encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Creating new classes from existing classes, inheriting their attributes and methods.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding complex implementation details and showing only the
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Q2. What is Normalization in SQL?
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Normalization in SQL is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down a database into smaller, more manageable tables and defining relationships between them.

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

• Normalization ensures data integrity by preventing anomalies such as insertion, update, an...read more
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Q3. Example of abstract class ?
Ans. 
Abstract class is a class that cannot be instantiated and may contain abstract methods.
• Cannot be instantiated directly

• May contain abstract methods that must be implemented by subclasses

• Used to define a common interface for a group of related classes
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Q4. SQL Commands ?
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Q5. Pseudo code for prime number.
Ans. 
Pseudo code for prime number is a simple algorithm to determine if a given number is prime or not.
• Start by checking if the number is less than 2, if so it is not prime

• Then iterate from 2 to the square root of the number and check if it is divisible by any number in that range

• If it is not divisible by any number, then it is a prime number
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Q6. Create Login page using html, css and js
Ans. 
Create a login page using HTML, CSS, and JS
• Use HTML for structure and form elements

• Style the page using CSS for layout and design

• Implement client-side validation using JavaScript

• Handle form submission and authentication using JS
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Q1. Question related to my hobby?
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Nothing much
Just handling peer pressure

Q1. Explain how dns works
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Q2. Explain Linux boot process
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