R Systems International Interview Questions and Answers

Mainly data leakage related problems

Q1. Basic Swift and Objective C related questions
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Q2. SOLID principle
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Q3. Details of SOLID principle with its basic
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Q4. How to handle memory leakage
Ans. 
Best practices for handling memory leaks in iOS development
• Use Instruments to identify memory leaks

• Avoid strong reference cycles with weak or unowned references

• Use autorelease pools for temporary objects

• Implement proper memory management with ARC (Automatic Reference Counting)
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Q5. Memory management
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Mainly 4 Questions
1-2 MCQ
3: Create a class deriving from IReptile and return an object of HatchEgg which has Hatch Method. Hatch Method should return same IReptile object.
4) Sorting IDs in dictionary

Q1. The Interviewer was Very Rude and he doesn't care about the Requirements of Hiring a candidate. he was constantly asking about Other Companies Architectures and The things you did in them. instead of havin...read more
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Q2. SOLID, Interfaces , Boxing/Unboxing
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Q1. Why do we use SOLID principle, SRP and OCP violation?
Ans. 
SOLID principles help in creating maintainable, scalable, and flexible software.
• SOLID principles help in creating software that is easier to maintain and extend.

• Single Responsibility Principle (SRP) ensures that a class has only one reason to change, leading to more modular and cohesive code.

• Open/Closed Principle (OCP) states that a class should be open for extension but closed for modification, allowing for easy chang...read more
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Q2. What is singleton design pattern and how to implement it?
Ans. 
Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
• Create a private static instance of the class within the class itself.

• Provide a public static method to access the instance.

• Ensure the constructor of the class is private to prevent instantiation from outside the class.

• Example: Singleton pattern is commonly used in database connections to ensure only one connectio...read more
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Q3. OOPs based question: abstract vs interface, multiple inheritance, method overloading vs method overriding.
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Q4. Dependency injection- what is it and any use case where to use?
Ans. 
Dependency injection is a design pattern where components are provided with their dependencies rather than creating them internally.
• Dependency injection helps in achieving loose coupling between components.

• It makes components easier to test by allowing for easier mocking of dependencies.

• Use cases include injecting database connections, logging services, and external API clients into components.
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Q1. Multithreading and TPL related questions?
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Q2. How can we debug the any published dll?
Ans. 
Debugging a published dll involves using tools like Visual Studio debugger and logging mechanisms.
• Use Visual Studio debugger to attach to the process using the published dll

• Set breakpoints in the code to pause execution and inspect variables

• Use logging mechanisms to track the flow of execution and identify issues

• Check for any exceptions or errors thrown by the dll
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Q3. Data seeding in entity framework and how to map tables with entity?
Ans. 
Data seeding in Entity Framework involves pre-populating database tables with initial data. Mapping tables with entities involves defining relationships between database tables and entity classes.
• Data seeding in Entity Framework can be done using the 'Seed' method in the 'Configuration' class of the DbContext.

• To map tables with entities, use data annotations or Fluent API to define relationships between entities and da...read more
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Q4. Deployment related question in IIS.
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Q1. Salary negotiation related discussion
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Q1. What are scrum ceremonies?
Ans. 
Scrum ceremonies are regular meetings held in Agile project management to facilitate communication and collaboration among team members.
• Sprint Planning: Setting goals and planning tasks for the upcoming sprint.

• Daily Stand-up: Short daily meetings to discuss progress, roadblocks, and plans for the day.

• Sprint Review: Demo of completed work to stakeholders for feedback.

• Sprint Retrospective: Reflection on what went well, w...read more
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Q2. How do you define sprint?
Ans. 
A sprint is a time-boxed period during which a specific amount of work must be completed.
• Sprints are typically 2-4 weeks long in Agile methodology

• At the beginning of a sprint, the team plans the work to be done and commits to completing it by the end of the sprint

• Sprints end with a review and retrospective to discuss what went well and what could be improved for the next sprint
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Q3. How do you make story points?
Ans. 
Story points are estimates used in Agile methodology to measure the complexity and effort required for a task.
• Story points are typically assigned based on the perceived complexity, risk, and effort involved in a user story or task.

• They are not based on time, but rather on relative sizing compared to other tasks.

• Common scales for story points include Fibonacci sequence (1, 2, 3, 5, 8, 13, etc.) or t-shirt sizes (XS, S, ...read more
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Q4. Scenario-based questions on stakeholder manager
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Q5. How is product management different from project management?
Ans. 
Product management focuses on the development and marketing of a specific product, while project management involves overseeing a specific project from start to finish.
• Product management is focused on the entire lifecycle of a product, from ideation to launch and beyond.

• Project management is focused on the successful completion of a specific project within a set timeframe and budget.

• Product managers work closely with c...read more
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