AH INFOTECH Interview Questions and Answers

5G technology, 2 mins to prepare, Calls out name and then we have to turn on camera and speak.

Impact of E-commerce on bricks and motors

Q1. Introduce Yourself
Ans. 
I am a recent graduate with a degree in Computer Science and a passion for software development.
• Graduated with a Bachelor's degree in Computer Science

• Proficient in programming languages such as Java, Python, and C++

• Completed internships at tech companies like Google and Microsoft

• Interested in machine learning and artificial intelligence
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Q2. Research Internship based questions on python which I mentioned in my Resume
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Q3. Doctype Html - Why is it mentioned? HTML - Inline and block elements
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Q4. What is OOP? Explain its five pillars.
Ans. 
OOP stands for Object-Oriented Programming. Its five pillars are encapsulation, inheritance, polymorphism, abstraction, and composition.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

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

• Polymorphism: Objects of different classes can be treated as objects of a common superclass.

• Abstrac...read more
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Q5. SQL - Select query syntax and types of join
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SQL select query syntax and types of join
• SQL SELECT query syntax: SELECT column1, column2 FROM table_name WHERE condition

• Types of joins: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN

• Example: SELECT orders.order_id, customers.customer_name FROM orders INNER JOIN customers ON orders.customer_id = customers.customer_id
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Q6. JAVA - DSA Questions 1. For range 1 to 100, if number divisible by 3 print "Zig", if number divisible by 5 print "Zag" and if divisible by both print "Zig-Zag". 2. Find second largest element in a given ar...read more
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Asked questions based on arrays

Q1. Questions related sortings
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Q2. Questions related to projects
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Q1. Managerial questions
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Q1. Nonsense question
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Q2. They don't have knowledge
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Q1. Coding DSA question
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Q2. No of frequency of character in word
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Q1. Four Pillars of OOPS in Java?
Ans. 
Encapsulation, Inheritance, Polymorphism, Abstraction are the four pillars of OOPS in Java.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allows a class to inherit properties and behavior from another class.

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

• Abstraction: Hiding the implementation details and showing only the necessary features.
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Q2. What is a constructor in Java?
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A constructor in Java is a special type of method that is used to initialize objects.
• Constructors have the same name as the class they are in.

• They do not have a return type, not even void.

• Constructors are called when an object of a class is created.

• Example: public class Car { public Car() { // constructor code } }
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