Infinite Computer Solutions Interview Questions, Process, and Tips

Q1. What are the differences between the MVC and MVVM architectural patterns, and in what scenarios should each be used?
Ans. 
MVC focuses on separating data, presentation, and logic, while MVVM adds a ViewModel layer to enhance data binding and separation of concerns.
• MVC: Model-View-Controller pattern separates data, presentation, and logic. Views directly interact with Models and Controllers.

• MVVM: Model-View-ViewModel pattern adds a ViewModel layer between the View and Model to enhance data binding and separation of concerns.

• MVC is more trad...read more
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Q2. What are the key principles of memory management in iOS app development?
Ans. 
Key principles of memory management in iOS app development include reference counting, autorelease pools, and avoiding retain cycles.
• Use ARC (Automatic Reference Counting) to manage memory automatically

• Avoid retain cycles by using weak references or unowned references

• Use autorelease pools to manage memory for temporary objects
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Q3. What are the differences between classes and structs, and when should each be used?
Ans. 
Classes are reference types, while structs are value types. Classes are used for complex data structures, inheritance, and reference counting. Structs are used for simple data types and performance optimization.
• Classes are reference types, stored on the heap, and support inheritance and reference counting. Use classes for complex data structures like objects, where identity matters.

• Structs are value types, stored on th...read more
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Q1. What is your knowledge of core animation?
Ans. 
Core Animation is a powerful framework in iOS for creating animations and visual effects.
• Core Animation is a high-performance framework for animating views and graphics on iOS devices.

• It allows for smooth animations, transitions, and effects without compromising performance.

• Core Animation uses layers to manage the visual content of your app, providing hardware-accelerated rendering.

• You can create animations using keyfr...read more
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Q2. How do you integrate and maintain third-party libraries?
Ans. 
Integrating and maintaining third-party libraries involves adding dependencies, managing versions, and updating as needed.
• Use dependency management tools like CocoaPods or Carthage to easily add and update libraries

• Regularly check for updates and security patches for third-party libraries

• Ensure compatibility with existing codebase by testing thoroughly after integrating new libraries
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Q1. Salary discussions
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Q1. What's the DNS port number
Ans. 
DNS port number is 53
• DNS port number is 53 for both TCP and UDP protocols

• It is used for DNS queries and responses

• Firewalls and network devices need to allow traffic on port 53 for DNS to function properly
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Easy to crack this round and mostly from online

Communication assessment

Q1. Tough qns other than self intro company related qns
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Q2. Self intro but they not satisfied with our performance
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It contains arthemetic logical and some c languages questions

Q1. Techincal questions based on resume
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Q1. Tell me about yourself
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Q1. What are your strengths and Weekness
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Q1. Explain few Java 8 features, Singleton design pattern
Ans. 
Java 8 features include lambda expressions, streams, default methods, and more. Singleton design pattern ensures only one instance of a class exists.
• Java 8 features: lambda expressions, streams, default methods, functional interfaces

• Example: lambda expression - (a, b) -> a + b

• Singleton design pattern: ensures only one instance of a class is created

• Example: Singleton class with private constructor and static method t
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Q2. How Spring security works
Ans. 
Spring Security is a powerful and customizable authentication and access control framework for Java applications.
• Spring Security provides comprehensive security services for Java EE-based enterprise software applications.

• It offers authentication, authorization, and protection against common security vulnerabilities.

• Spring Security is highly customizable and can be integrated with various authentication mechanisms like ...read more
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Q3. Code to reverse a String
Ans. 
Code to reverse a String
• Use a loop to iterate through the characters of the string

• Append each character to a new string in reverse order

• Return the reversed string
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Q4. Code to filter the record using Java 8
Ans. 
Using Java 8 stream to filter records in an array of strings
• Use stream() method to convert the array to a stream

• Use filter() method to specify the filtering condition

• Use collect() method to collect the filtered elements back into an array
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Q1. About myself, project domain knowledge
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