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Infosys IOS Developer Interview Questions, Process, and Tips
Top Infosys IOS Developer Interview Questions and Answers
- Q1. 1.Difference between class and struct?
- Q2. How can you create dynamic UI like amazon?
- Q3. How do you manage local data?
Infosys IOS Developer Interview Experiences
7 interviews found
Aashna
Interview Questionnaire
2 Questions
- Q1. Struct vs Class
- Ans.
Struct is value type while Class is reference type in Swift. Structs are passed by value while Classes are passed by reference.
Structs are ideal for small data types like coordinates, colors, etc.
Classes are ideal for larger data types like view controllers, network managers, etc.
Structs are immutable by default while Classes are mutable.
Structs cannot inherit from other types while Classes can.
Structs are stack alloca
- Q2. MultiThreading Related Questions
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Approached by Company and was interviewed in Jun 2024. There were 2 interview rounds.
(3 Questions)
- Q1. Solid principle
- Q2. Weak and unowned reference difference
- Q3. All basic to advance question asked
(1 Question)
- Q1. Basic information about yourself and salary discussion
Interview Preparation Tips
I applied via LinkedIn and was interviewed in Mar 2024. There was 1 interview round.
(2 Questions)
- Q1. App life cycle and app states?
- Q2. Difference between MVVM and MVC
- Ans.
MVVM focuses on separation of concerns by introducing a ViewModel layer, while MVC combines the responsibilities of the Model and Controller.
MVC stands for Model-View-Controller, where the Model represents the data, the View displays the data, and the Controller handles user input and updates the Model.
MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and the Model, hand...
Skills evaluated in this interview
(1 Question)
- Q1. SwiftUI related, Combine Related, Decodable, Actor, Testing Related
Infosys interview questions for designations
Selected
I applied via Company Website and was interviewed in Nov 2022. There were 2 interview rounds.
(2 Questions)
- Q1. 1.Difference between class and struct?
- Ans.
Classes are reference types while structs are value types.
Classes are passed by reference while structs are passed by value.
Classes support inheritance while structs do not.
Classes have a default initializer while structs do not.
Classes can be deinitialized while structs cannot.
Examples of classes include UIView and UIViewController while examples of structs include CGRect and CGPoint.
- Q2. Solid Principles, Inheritance and behavioral questions.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed before Oct 2023. There was 1 interview round.
(2 Questions)
- Q1. How do you manage local data?
- Ans.
Local data is managed using Core Data framework in iOS development.
Use Core Data framework to create, read, update, and delete local data.
Utilize entities, attributes, and relationships to model the data.
Implement fetch requests to retrieve data based on specific criteria.
Use NSManagedObject subclasses to represent data objects.
Utilize NSPersistentContainer to manage the Core Data stack.
- Q2. How can you create dynamic UI like amazon?
- Ans.
Dynamic UI like Amazon can be created using a combination of responsive design, data-driven content, and user personalization.
Utilize responsive design principles to ensure the UI adapts to different screen sizes and devices.
Implement data-driven content to display relevant information based on user preferences and behavior.
Use user personalization techniques such as recommendations, personalized product suggestions, a...
Skills evaluated in this interview
IOS Developer Jobs at Infosys
I applied via Company Website and was interviewed in Jul 2020. There was 1 interview round.
Interview Questionnaire
4 Questions
- Q1. All basics of swift. Enums optionals closures protocols etc
- Q2. Best feature you like of swift
- Q3. App live all steps
- Q4. Certificates information
Interview Preparation Tips
What people are saying about Infosys
Interview questions from similar companies
Selected
I applied via LinkedIn and was interviewed in Mar 2024. There was 1 interview round.
(6 Questions)
- Q1. What is Weak & Unowned , ARC?
- Ans.
Weak & Unowned references are used in ARC to prevent retain cycles in Swift programming.
Weak references do not increase the retain count of an object, and automatically become nil when the object is deallocated.
Unowned references do not keep a strong reference to the object, and can become a dangling pointer if the object is deallocated.
ARC (Automatic Reference Counting) is a memory management system used in Swift to a
- Q2. What is Autoclosure?
- Ans.
Autoclosure is a feature in Swift that automatically wraps an expression in a closure.
Autoclosure is used to delay evaluation of an expression until it is actually needed.
It is commonly used with functions that take closures as arguments, allowing the caller to pass in a regular value instead of a closure.
Autoclosures are created by adding @autoclosure attribute before the closure's parameter type.
- Q3. Code snippets for optional binding, find error ?
- Ans.
Optional binding in Swift helps to safely unwrap optionals and check for nil values.
Use if let or guard let to safely unwrap optionals and bind the value to a new constant or variable.
Check for nil values before using the unwrapped value to avoid runtime errors.
Example: if let name = optionalName { print(name) }
Example: guard let age = optionalAge else { return }
- Q4. What are Access Controls/modifiers? public vs open?
- Ans.
Access controls/modifiers determine the visibility and accessibility of classes, methods, and properties in object-oriented programming.
public access control allows a class, method, or property to be accessed from anywhere in the code
open access control allows a class to be subclassed outside of the module where it is defined
public is commonly used in Swift for most cases, while open is used when you want to allow subc
- Q5. Protocol vs Closures?
- Ans.
Protocols define a blueprint of methods, properties, and other requirements that a class or struct must adopt. Closures are self-contained blocks of functionality that can be passed around and used in your code.
Protocols define a set of methods, properties, and other requirements that a class or struct must implement.
Closures are self-contained blocks of functionality that can capture and store references to any consta...
- Q6. How you use GIT, How to manage conflicts?
- Ans.
I use GIT for version control and manage conflicts by resolving them through communication and collaboration.
Regularly commit changes to keep track of progress
Pull latest changes before making any updates to avoid conflicts
Communicate with team members to resolve conflicts efficiently
Use tools like Git merge or Git rebase to resolve conflicts
Document resolution process for future reference
Interview Preparation Tips
Skills evaluated in this interview
(5 Questions)
- Q1. Encription and decription in swift
- Ans.
Encryption and decryption in Swift involves using cryptographic algorithms to encode and decode data securely.
Use common encryption algorithms like AES or RSA for encryption.
Implement encryption using libraries like CommonCrypto or CryptoSwift.
Store encryption keys securely and use secure protocols for data transmission.
Example: Encrypting a string using AES encryption in Swift.
- Q2. Keychain access in swift
- Ans.
Keychain access in Swift allows secure storage of sensitive information like passwords, tokens, etc.
Use Keychain Services API to securely store and retrieve sensitive data.
Keychain items are stored securely in the device's keychain and are encrypted.
Access keychain items using unique identifiers called keys.
Use Keychain Swift library for easier implementation.
- Q3. Class vs struct
- Ans.
Classes are reference types, while structs are value types in Swift.
Classes are reference types, meaning they point to the same instance in memory when assigned to a new variable.
Structs are value types, meaning they create a new copy when assigned to a new variable.
Use classes for complex data structures or when you need inheritance, use structs for simple data types or when you want value semantics.
Example: class Per...
- Q4. If let and guard let
- Q5. Grand central dispatch in swift
- Ans.
Grand Central Dispatch (GCD) is a technology in Swift for managing concurrent operations.
GCD allows developers to perform tasks concurrently without having to manage threads manually.
It provides a high-level API for managing tasks and executing them on different queues.
Developers can use GCD to perform tasks in the background, update the UI on the main thread, and more.
Skills evaluated in this interview
Easy aptitude english and logical reasoning.
(2 Questions)
- Q1. Tell me About yourself
- Q2. Swift advantages and disadvantages
- Ans.
Swift is a powerful and modern programming language for iOS development, but it has its own set of advantages and disadvantages.
Advantages: faster performance, safer code with optionals, easier to read and write code, interoperability with Objective-C
Disadvantages: steep learning curve for beginners, limited community support compared to other languages like Java or Python
(1 Question)
- Q1. Salary expectation and current salary
Skills evaluated in this interview
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Infosys IOS Developer Interview Process
based on 4 interviews in last 1 year
1 Interview rounds
- Technical Round
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