McAfee Technical Intern Interview Questions and Answers

3 medium dsa questions on Hackerrank

Q1. Class based graph question of easy level implementation of oops and dsa
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Q1. Many situational questions about projects.
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We got a mail from the HR directly to write the round one- coding round. This round was for almost 2 hours where we were asked questions from DSA. The difficulty of the problems were medium to hard.

Q1. Asked about My Resume
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Q2. Asked 2 Puzzle and DSA questions. Medium level but a bit tricky ones.
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Q1. Project was asked
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Q2. Oops concept and implementation
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Oops concept refers to Object-Oriented Programming principles and their implementation in code.
• Oops concepts include inheritance, polymorphism, encapsulation, and abstraction.

• Inheritance allows a class to inherit properties and behaviors from another class.

• Polymorphism allows objects to be treated as instances of their parent class.

• Encapsulation hides the internal state of an object and only exposes necessary methods.

• A...read more
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It is easy based on Linux, os , network sw/hw.

The gd is very easy in terms of communication

Q1. Basic of cloud computing n virtualization
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60 mins - reasoning and problem solving

C / JAVA /PYTHON - LEET CODE

Q1. BASIC CONCEPTS AND ACADEMIC PROJECT
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Q2. BEHAVIORAL QUESTIONS
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Q1. Tell me about yourself
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Q2. Tell me in details about your project. (Mainly the python related project)
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Q3. Which ML algorithm did you use in your project?
Ans. 
I used the Random Forest algorithm in my project.
• Random Forest is an ensemble learning method that combines multiple decision trees to make predictions.

• It is used for both classification and regression tasks.

• Random Forest reduces overfitting and provides feature importance.

• Example: I used Random Forest to predict customer churn in a telecom company.
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Q4. What is Sql? And what is a database?
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SQL is a programming language used for managing and manipulating relational databases. A database is a structured collection of data.
• SQL is used to retrieve, insert, update, and delete data from a database.

• A database is a software system that stores and organizes data in a structured manner.

• SQL allows users to define the structure of a database, create tables, and establish relationships between tables.

• Examples of data
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Q5. What do you understand by joins in sql?
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Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables in a single query.

• Common types of joins include inner join, left join, right join, and full outer join.

• Joins are performed using the JOIN keyword and specifying the columns to join on.

• Joins can be used to combine tables based on matching values or non-matching values.

• ...read more
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Q6. Apply join in the above tables (Table was provided by the interviewer)
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Q7. How many squares are their in a chess box? (Aptitude question)
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Time based test with basic questions

Basic level coding round in preferred language

Q1. About projects done in college
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Q2. Coding round
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