PlaySimple Games Intern Interview Questions and Answers

Q1. Tell me about urself
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Q2. About my skill sql, python,
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There were two coding questions; one was related to linked lists, and the other was linked to binary trees.

Q1. Can you elaborate on the project discussion you mentioned in your resume?
Ans. 
Developed a web application for tracking inventory and sales data
• Used React for front-end development

• Implemented RESTful APIs using Node.js and Express for back-end

• Utilized MongoDB for database management

• Integrated authentication and authorization features for secure access

• Implemented data visualization using Chart.js
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Q2. Can you provide the code to reverse a linked list?
Ans. 
Reversing a linked list involves changing the direction of pointers to go from the end to the beginning.
• Start by initializing three pointers: current, previous, and next.

• Iterate through the linked list, updating the pointers to reverse the direction of the links.

• Update the head of the linked list to point to the new first node, which was the original last node.
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Q3. Some questions were asked regarding the four pillars of Object-Oriented Programming (OOP)?
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Q4. Questions related to pointers, dangling pointers.
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Q1. Program for finding the perfect squares between two numbers.
Ans. 
Program to find perfect squares between two numbers
• Iterate through numbers between the given range

• Check if the square root of the number is an integer

• If yes, then it is a perfect square
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Q2. What are smart pointers in C++?
Ans. 
Smart pointers in C++ are objects that act like pointers but provide automatic memory management.
• Smart pointers help prevent memory leaks by automatically managing memory allocation and deallocation.

• Examples include unique_ptr, shared_ptr, and weak_ptr.

• unique_ptr is used for exclusive ownership, shared_ptr for shared ownership, and weak_ptr to prevent circular references.
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Q3. What is mutual exclusion in the context of concurrent programming?
Ans. 
Mutual exclusion is a concept in concurrent programming where only one thread can access a shared resource at a time.
• Ensures that only one thread can access a critical section of code at a time

• Prevents race conditions and data corruption

• Commonly implemented using locks, semaphores, or mutexes

• Example: Using a mutex to protect a shared variable in a multi-threaded application
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Q4. What is the process for implementing multithreading?
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Implementing multithreading involves creating and managing multiple threads to execute tasks concurrently.
• Identify the tasks that can be executed concurrently

• Create and manage multiple threads to execute these tasks simultaneously

• Use synchronization techniques like locks and semaphores to prevent race conditions

• Handle communication and coordination between threads

• Consider thread safety and resource sharing issues
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Basic aptitude test, if you know basic maths you can easily crack it.

Questions based or percentage, profit loss, ratio

Q1. Explain about stacks
Ans. 
Stacks are a data structure that follows the Last In First Out (LIFO) principle.
• Elements are added and removed from the top of the stack

• Common operations include push (add element) and pop (remove element)

• Stacks can be implemented using arrays or linked lists

• Examples of stack usage include function call stack and undo/redo functionality in text editors
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Q2. To find middle number in the linked list
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To find the middle number in a linked list.
• Traverse the linked list using two pointers, one moving twice as fast as the other.

• When the fast pointer reaches the end, the slow pointer will be at the middle node.

• If the linked list has even number of nodes, there will be two middle nodes. Return either one.
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Q1. Introduction , hobbies, goals
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Q2. Strength, weakness, short term and long term goals
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Dp, trees and basic time complexity

Q1. Tell me about your self
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment
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Q2. Projects and intership
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Dsa problems dp and tress problem

Q1. Tell me about your self
Ans. 
I am a passionate software engineer with 5 years of experience in developing web applications using various technologies.
• 5 years of experience in software development

• Proficient in developing web applications

• Skilled in using various technologies

• Passionate about software engineering
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Q2. Projects and intership
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The test was in hackerrank platform, it was moderate level.

Q1. Explain MVC pipe-line.
Ans. 
MVC pipeline is a design pattern that separates an application into three interconnected components: Model, View, and Controller.
• Model represents the data and business logic

• View displays the data to the user

• Controller handles user input and updates the model and view accordingly

• The pipeline ensures separation of concerns and promotes modularity

• Example: A user enters data in a form (input), the controller receives the i...read more
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Q2. Howrouting works in Asp.Net MVC?
Ans. 
Routing in Asp.Net MVC maps incoming requests to appropriate controller actions.
• Routing is configured in RouteConfig.cs file.

• Routes are defined using MapRoute method.

• Routes can have placeholders for dynamic values.

• Routes can have constraints to restrict the values of placeholders.

• Routes can be named for easy reference.

• Default route is defined as {controller}/{action}/{id}.

• Attribute routing can also be used to define ro
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Q3. How to move from one entity framework version to another in a project?
Ans. 
To move from one Entity Framework version to another, update the NuGet package and make necessary code changes.
• Update the NuGet package to the desired version

• Make necessary code changes to accommodate any breaking changes

• Test thoroughly to ensure the application still works as expected
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Q4. How WCF is different from Asp.Net Web Api?
Ans. 
WCF is a framework for building distributed systems while Asp.Net Web Api is for building HTTP services.
• WCF supports multiple protocols like TCP, HTTP, Named Pipes, etc. while Web Api only supports HTTP.

• WCF has more configuration options and is more flexible than Web Api.

• Web Api is more lightweight and easier to use for building RESTful services.

• WCF is more suitable for building enterprise-level applications with compl...read more
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Q5. How to create a restful service without using Asp.Net Web Api template?
Ans. 
Creating a RESTful service without using Asp.Net Web Api template.
• Use a lightweight framework like Flask or Express

• Define routes and HTTP methods for each endpoint

• Serialize data to JSON format

• Handle errors and exceptions

• Test the service using tools like Postman or curl
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Q6. Difference between drop, truncate and delete.
Ans. 
Difference between drop, truncate and delete.
• DROP command removes a table from the database

• TRUNCATE command removes all rows from a table

• DELETE command removes specific rows from a table
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Q7. How many types of routings are there in Asp.Net MVC?
Ans. 
There are two types of routings in Asp.Net MVC: convention-based routing and attribute routing.
• Convention-based routing uses default routing rules to map URLs to controller actions.

• Attribute routing allows developers to define custom routes using attributes on controller actions or at the controller level.

• Both types of routing can be used together in the same application.

• Convention-based routing is the default routing ...read more
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Q8. How to go about performancetuning in SQL?
Ans. 
Performance tuning in SQL involves optimizing queries, indexes, and server settings to improve database performance.
• Identify slow queries using profiling tools

• Optimize queries by rewriting or adding indexes

• Adjust server settings such as memory allocation and disk usage

• Consider partitioning large tables

• Regularly monitor and analyze performance metrics
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Q9. Given a project requirement, how to choose between .Net framework and .Net Core?
Ans. 
Choose .Net Core for cross-platform and cloud-based applications, .Net Framework for Windows-only applications.
• Consider the target platform and deployment environment

• Choose .Net Core for cross-platform and cloud-based applications

• Choose .Net Framework for Windows-only applications

• Check for compatibility with existing libraries and frameworks

• Consider performance and scalability requirements
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Q1. Why would to like to change your organisation?
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