Mindlogicx Infotech IOS Application Developer Interview Questions and Answers

Basic interview on question like aptitude, javascript, typescript and react-native question

Q1. Basic javascript question in second round
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Q2. What is function currying
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Function currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of nested functions, each taking a single argument.
• Currying allows you to partially apply a function by fixing a number of arguments, which creates a new function.

• It helps in creating reusable functions and improves code readability.

• Example: const add = (a) => (b) => a + b; const add5 = add
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Q3. What is IIEF where we can use it
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IIFE stands for Immediately Invoked Function Expression, used for creating a function that is executed immediately after it is defined.
• IIFE is used to create a private scope for variables to avoid polluting the global scope.

• It is commonly used in React Native development to encapsulate code and prevent naming conflicts.

• Example: (function() { console.log('IIFE executed'); })();
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Q4. Deeply they ask me closure related question how it's working
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Q5. How call call stack and event loop is working
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Call stack is used to keep track of function calls, while event loop manages asynchronous operations in JavaScript.
• Call stack is a data structure that keeps track of function calls in a program.

• When a function is called, it is added to the top of the call stack. When the function completes, it is removed from the stack.

• Event loop is responsible for managing asynchronous operations in JavaScript, ensuring that they are ...read more
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Q1. Project related discussion only
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Q1. React native hooks
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Q2. Component architecture
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Q1. Javascript programs
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Q2. Coding
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Q1. Basic ios development questions
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Q2. Core data or any other data base
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Q1. Explain MVVM and its pros/cons
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MVVM is a design pattern that separates the UI, business logic, and data layers in an iOS application.
• Model: Represents the data and business logic of the application.

• View: Represents the UI components of the application.

• ViewModel: Acts as a mediator between the Model and View, handling the presentation logic and data binding.

• Pros: Separation of concerns, easier to maintain and test, promotes reusability.

• Cons: Increase...read more
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Q2. Multithreading in swift
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Multithreading in Swift allows for concurrent execution of tasks to improve performance and responsiveness.
• Use Grand Central Dispatch (GCD) for managing concurrent tasks

• Avoid blocking the main thread to prevent UI freezes

• Consider using Operation and OperationQueue for more complex task management
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Q1. All technical Jetpack concept no DSA questions and asked all theoretical questions
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Q2. What are coroutine, how to secure ur app data, network call in android , ssl pinning, notification's implementation through FCM, android basic questions
Ans. 
Coroutines are a way to perform asynchronous operations in Android, securing app data involves encryption, SSL pinning enhances security, FCM for notifications.
• Coroutines are used for managing asynchronous operations in Android, allowing for efficient and non-blocking code execution.

• Securing app data involves using encryption techniques such as AES to protect sensitive information from unauthorized access.

• SSL pinning i...read more
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Q1. Basics of Android
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Q1. Technical implementation
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Q1. Company fit culture test
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Q1. Android basics and life cycle
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Q2. Services and AIDL
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Q1. Design patterns and use cases
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Q1. Reason foe change current company
Ans. 
Seeking new challenges and growth opportunities in a more innovative environment.
• Desire for professional growth

• Seeking new challenges

• Looking for a more innovative environment
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Q1. What is MVVM and how to bind data using MVVM
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MVVM is a design pattern that separates the UI from the business logic by introducing a middle layer called ViewModel.
• Model-View-ViewModel design pattern

• ViewModel acts as a link between the Model and View

• Data binding is used to connect the ViewModel to the View

• Updates in the ViewModel automatically reflect in the View
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Q2. What is SSL pinning
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SSL pinning is a security measure used to prevent man-in-the-middle attacks by associating a specific SSL certificate with a particular app.
• SSL pinning involves hardcoding the expected SSL certificate or public key within the mobile app.

• This helps verify the server's identity and prevent attackers from intercepting and decrypting communication.

• SSL pinning can be implemented using libraries like TrustKit or manually by ...read more
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