Chapter247 Infotech Interview Questions and Answers

Q1. Basic DSA. Array and String
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Q2. Salary negotiation.
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General basic math and reasoning.

Basic question for coding like pattern making (triangle) they will observe you for your skills and logical understanding with the code.

Q1. Basic behavioural and Technical questions
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Q2. What are the differences between Python 2 and Python 3, and how are comments used in Python? Additionally, can you describe your personal projects and group projects during your college studies?
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Python 2 vs Python 3 differences, comments usage, and college projects
• Python 2 is legacy, Python 3 is current version with improved syntax and features

• Python 2 uses print as a statement, Python 3 uses print() as a function

• Comments in Python start with # symbol and can be used to explain code or disable certain lines

• Personal project: Developed a web scraping tool using Python to extract data from websites

• Group project: ...read more
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Q1. Taken by Senior AI developer and CTO. It was an hour interview where they asked scenario based questions on RAG. And simple questions on ML and CNN too.
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Q2. Vector databases
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Q1. What are oops concepts in java, explain real time scenario
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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
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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
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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
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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
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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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