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Accenture IOS Developer Interview Questions and Answers
6 Interview questions
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 }
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...
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.
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...
What people are saying about Accenture
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
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 c...
Accenture IOS Developer Interview Experiences
3 interviews found
Anonymous
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
Selected
I applied via Recruitment Consulltant and was interviewed in Aug 2023. There were 2 interview rounds.
(1 Question)
- Q1. Basic questions related to Swift like closure, optionals, gcd, operations. Questions related to sdks like firebase, push notifications
(1 Question)
- Q1. It was about the projects, methodologies used, architecture, roles and responsibilities in team.
I applied via Naukri.com and was interviewed in Sep 2020. There were 4 interview rounds.
Interview Questionnaire
5 Questions
- Q1. Swift Basics
- Q2. IOS Concepts
- Q3. Design patterns
- Q4. Architectural patterns
- Q5. Multi threading and concurrecy
Interview Preparation Tips
Also communication is important for some campanies.
Interview questions from similar companies
Interview Questionnaire
6 Questions
- Q1. What’s difference between class and structure
- Ans.
Classes and structures are both used to define custom data types, but they have some key differences.
Classes are reference types, while structures are value types.
Classes support inheritance, while structures do not.
Classes have deinitializers, while structures do not.
Classes have reference counting for memory management, while structures do not.
Classes can have optional property types, while structures cannot.
- Q2. What’s retain cycle how you can avoid
- Ans.
Retain cycle is a memory management issue where objects reference each other and cannot be released. It can be avoided by using weak or unowned references.
Retain cycle occurs when two or more objects hold strong references to each other.
To avoid retain cycle, use weak or unowned references instead of strong references.
Weak references do not increase the reference count of an object and automatically become nil when the...
- Q3. What’s opinion binding
- Ans.
Opinion binding is a legal doctrine that requires judges to follow the decisions of higher courts in similar cases.
Opinion binding is also known as stare decisis.
It helps to ensure consistency and predictability in the legal system.
For example, if a higher court has already ruled that a certain law is unconstitutional, lower courts must follow that ruling in similar cases.
Opinion binding can be controversial, as it can...
- Q4. Difference between GCD and operation Queues
- Ans.
GCD and Operation Queues are both used for concurrent programming in iOS, but differ in their approach.
GCD is a C-based API that uses a thread pool model for concurrency.
Operation Queues are built on top of GCD and provide a higher-level abstraction for concurrency.
GCD is best for simple, lightweight tasks, while Operation Queues are better for more complex tasks with dependencies.
GCD uses blocks for task execution, wh...
- Q5. Explain the Life cycle of iOS applications
- Ans.
The life cycle of iOS applications refers to the stages an app goes through from launch to termination.
The app is launched by the user or system
The app enters the foreground and becomes active
The app can be sent to the background or suspended
The app can be terminated by the user or system
The app can be resumed from the background or suspended state
The app can receive memory warnings and handle them appropriately
- Q6. Explain the life cycle of UIviewController
- Ans.
The UIViewController life cycle consists of several stages that occur when the view controller is loaded and unloaded.
viewDidLoad() - called when the view controller's view is loaded into memory
viewWillAppear() - called just before the view appears on the screen
viewDidAppear() - called just after the view appears on the screen
viewWillDisappear() - called just before the view disappears from the screen
viewDidDisappear()...
Skills evaluated in this interview
What people are saying about Accenture
I applied via Recruitment Consulltant and was interviewed before Feb 2021. There was 1 interview round.
(1 Question)
- Q1. What is optional, difference between struct and class?
- Ans.
Optional is a type in Swift that can hold a value or be nil. Struct and class are both used to define custom data types.
Optional is denoted by a question mark (?) and is used to handle nil values.
Structs are value types and are passed by value, while classes are reference types and are passed by reference.
Structs have a default memberwise initializer, while classes do not.
Classes can inherit from other classes, while s...
Interview Preparation Tips
Skills evaluated in this interview
Sagar Biswal
I applied via Naukri.com and was interviewed in Aug 2021. There was 1 interview round.
(1 Question)
- Q1. Basic iOS questions , Closures,Protocol,Optional,Auto layouts.
Interview Preparation Tips
I applied via LinkedIn and was interviewed in Aug 2023. There were 2 interview rounds.
Remove duplicate elements from list.
(2 Questions)
- Q1. What is the reason to change the job?
- Ans.
I seek new challenges and opportunities for growth that align with my career goals and personal development as an iOS Developer.
Desire for professional growth: I'm looking for a role that offers more opportunities for learning and advancement.
Seeking new challenges: I want to work on innovative projects that push my skills further, like developing apps with SwiftUI.
Cultural fit: I'm looking for a company culture that a...
- Q2. I was exploring for growth opportunities and IBM is a good organization to grow looking at its ML technologies IBMWatson.
I applied via Company Website
(2 Questions)
- Q1. I interned here in my second-year summer. I got selected on the basis of resume shortlisting.
- Q2. There was no technical round
Interview Preparation Tips
I applied via Approached by Company and was interviewed in Feb 2024. There was 1 interview round.
Find second greatest number from an array of duplicate items.
Interview Preparation Tips
naidu yatham
(2 Questions)
- Q1. Arc in swift...
- Ans.
ARC (Automatic Reference Counting) in Swift is a memory management system used to automatically manage memory allocation and deallocation.
ARC keeps track of how many references there are to an object and automatically deallocates it when there are no more references.
Use strong reference cycles can lead to memory leaks, so use weak or unowned references to break the cycle.
ARC is the default memory management system in S...
- Q2. Automstic referenc counting
- Ans.
Automatic Reference Counting (ARC) manages memory in iOS apps, ensuring efficient resource use and preventing memory leaks.
ARC automatically tracks and manages the app's memory usage.
Objects are deallocated when there are no strong references to them.
Use 'weak' references to avoid retain cycles, e.g., delegate properties.
Example: 'var delegate: MyDelegate?' is a weak reference.
ARC simplifies memory management compared ...
(2 Questions)
- Q1. Mvvm in swift....
- Ans.
MVVM (Model-View-ViewModel) is an architectural design pattern commonly used in iOS development to separate concerns and improve code maintainability.
MVVM separates the user interface (View) from the business logic (ViewModel) and data (Model).
ViewModel acts as an intermediary between the View and the Model, handling user interactions and updating the data.
Swift provides tools like Combine framework for reactive progra...
- Q2. Model view viewmodel
Skills evaluated in this interview
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