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Turing IOS Developer Interview Questions and Answers
Turing IOS Developer Interview Experiences
1 interview found
Anonymous
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. What's the difference between Class and Struct
- Ans.
Classes are reference types, while structs are value types in Swift.
Classes are reference types, meaning they are passed by reference, while structs are value types, passed by value.
Classes support inheritance, while structs do not.
Classes have deinitializers, while structs do not.
Classes can have reference counting for memory management, while structs do not.
Example: Class - Person, Struct - Point
- Q2. What is ARC and what's retain count
- Ans.
ARC stands for Automatic Reference Counting, a memory management system used in iOS development. Retain count is the number of references to an object.
ARC is a memory management system in iOS that automatically tracks and manages memory usage.
Retain count is the number of strong references to an object, which determines when the object should be deallocated.
When an object's retain count reaches 0, it is deallocated fro...
Skills evaluated in this interview
IOS Developer Jobs at Turing
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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
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.
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?
- Q2. I was exploring for growth opportunities and IBM is a good organization to grow looking at its ML technologies IBMWatson.
(2 Questions)
- Q1. Objective C vs swift
- Ans.
Objective-C is the older language used for iOS development, while Swift is the newer, more modern language.
Objective-C is a superset of C with Smalltalk-style messaging syntax.
Swift is more concise and easier to read than Objective-C.
Swift is safer due to its optionals and type interference features.
Objective-C has been around longer and has a larger codebase, but Swift is becoming more popular.
Many developers prefer S...
- Q2. Autolayouts and content
Skills evaluated in this interview
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
I applied via Naukri.com and was interviewed in Jan 2022. There were 3 interview rounds.
(1 Question)
- Q1. Basic iOS Questions which you can find from the internet What is Class & Structure Optional, Tupple
(1 Question)
- Q1. Tricky question based upon manager Team management Handling multiple junior developers under you.
(4 Questions)
- Q1. What are your salary expectations?
- Ans.
I expect a competitive salary based on my experience and skills.
I have a strong background in iOS development and have successfully completed several projects.
I am familiar with the latest technologies and frameworks in iOS development.
I have a proven track record of delivering high-quality code on time and within budget.
I am confident that my skills and experience make me a valuable asset to any team.
I am open to disc...
- Q2. Share details of your previous job.
- Ans.
I worked as an iOS Developer at XYZ Company.
Developed and maintained iOS applications using Swift and Objective-C.
Collaborated with cross-functional teams to gather requirements and deliver high-quality products.
Implemented new features and enhancements based on user feedback.
Optimized app performance and resolved bugs and issues.
Worked on integrating third-party libraries and APIs.
Participated in code reviews and prov...
- Q3. Why are you looking for a change?
- Ans.
I am looking for a change to explore new opportunities and challenges in my career.
Seeking growth and advancement in my professional journey
Want to work on more challenging projects
Desire to learn new technologies and expand my skillset
Looking for a better work-life balance
Seeking a company culture that aligns with my values and goals
- Q4. Tell me about yourself.
- Ans.
I am an experienced iOS developer with a passion for creating user-friendly and efficient applications.
I have been developing iOS applications for over 5 years.
I am proficient in Swift and Objective-C programming languages.
I have experience working with various frameworks and libraries such as UIKit, Core Data, and Alamofire.
I have a strong understanding of iOS design patterns and best practices.
I have successfully del...
Interview Preparation Tips
- Swift
- Objective C
- IOS
Easy aptitude english and logical reasoning.
(2 Questions)
- Q1. Tell me About yourself
- Ans.
I am an experienced IOS Developer with a passion for creating innovative and user-friendly mobile applications.
Over 5 years of experience in IOS app development
Proficient in Swift and Objective-C programming languages
Strong understanding of mobile UI/UX design principles
Familiar with RESTful APIs and third-party libraries
Developed and launched multiple successful apps on the App Store
- 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
(5 Questions)
- Q1. Multi threading
- Q2. Generic function
- Q3. Dependency injection
- Q4. Struct vs Class
- Ans.
Struct is a value type, Class is a reference type in Swift.
Structs are passed by value, Classes are passed by reference.
Structs are immutable by default, Classes are mutable.
Use Structs for simple data types, Classes for more complex objects.
- Q5. Type inference, type casting
Skills evaluated in this interview
I applied via LinkedIn and was interviewed in Jan 2022. There was 1 interview round.
(1 Question)
- Q1. Swift basic questions
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