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Tech Mahindra IOS Developer Interview Questions and Answers

Updated 11 May 2024

Tech Mahindra IOS Developer Interview Experiences

1 interview found

IOS Developer Interview Questions & Answers

user image naidu yatham

posted on 11 May 2024

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(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...

  • Answered by AI
  • Q2. Automstic referenc counting
Round 2 - Technical 

(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...

  • Answered by AI
  • Q2. Model view viewmodel

Skills evaluated in this interview

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.

  • Answered by AI
  • 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...

  • Answered by AI
  • 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...

  • Answered by AI
  • 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...

  • Answered by AI
  • 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

  • Answered by AI
  • 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()...

  • Answered by AI

Skills evaluated in this interview

I applied via Recruitment Consulltant and was interviewed before Feb 2021. There was 1 interview round.

Round 1 - Technical 

(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...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Study the basics, and the interview depends on client requirement.

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(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...

  • Answered by AI
  • Q2. Autolayouts and content

Skills evaluated in this interview

Round 1 - Technical 

(1 Question)

  • Q1. Basic of Swift and Objective C
Round 2 - One-on-one 

(1 Question)

  • Q1. Pure Technical Asking about your Project
Round 3 - HR 

(1 Question)

  • Q1. Salary Descussion with HR and normal HR Question

Interview Preparation Tips

Interview preparation tips for other job seekers - Make you technical strong and prepare DS Question as well
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Easy aptitude english and logical reasoning.

Round 2 - One-on-one 

(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

  • Answered by AI
  • 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

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. Salary expectation and current salary

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Walk-in and was interviewed before Sep 2023. There were 2 interview rounds.

Round 1 - Technical 

(14 Questions)

  • Q1. What is serialisation in API
  • Ans. 

    Serialisation in API is the process of converting data into a format that can be easily transmitted over a network.

    • Serialisation is used to convert complex data structures into a format that can be easily transmitted over a network.

    • It involves converting objects or data structures into a stream of bytes that can be sent over a network.

    • JSON and XML are commonly used formats for serialising data in APIs.

    • Serialisation is ...

  • Answered by AI
  • Q2. What is codable
  • Ans. 

    Codable is a protocol in Swift that allows for easy encoding and decoding of data types to and from external representations.

    • Codable protocol is used to convert custom data types to and from external representations such as JSON, plist, etc.

    • It requires the types to conform to Encodable and Decodable protocols.

    • Codable protocol provides default implementations for encoding and decoding.

    • Example: struct Person: Codable { v...

  • Answered by AI
  • Q3. What is MVVM architecture
  • Ans. 

    MVVM is an architectural design pattern that separates the user interface code from the business logic and data model.

    • MVVM stands for Model-View-ViewModel

    • Model represents the data and business logic

    • View displays the UI elements and interacts with the user

    • ViewModel acts as a mediator between the Model and View, handling user inputs and updating the Model

    • MVVM helps in achieving separation of concerns and making the code

  • Answered by AI
  • Q4. Solid principles
  • Q5. Coredata stack questions
  • Q6. Swift Optional related
  • Q7. About GCD, Concurrency
  • Q8. Dependency injection and inversion
  • Q9. About singleton, is it thread safe ?
  • Q10. Guard let, if let difference
  • Q11. Failable initialisers
  • Q12. Class struct difference
  • 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.

    • Classes support inheritance, while structs do not.

    • Classes can have deinitializers, while structs cannot.

    • Example: class Person { var name: String } vs struc

  • Answered by AI
  • Q13. About protocols, associated type, delegate examples
  • Q14. About identifiable protocol
Round 2 - HR 

(1 Question)

  • Q1. When you can join
  • Ans. 

    I can join within 2 weeks of receiving an offer.

    • I can start within 2 weeks of receiving an offer

    • I need to give notice at my current job before starting

    • I have some personal commitments that I need to wrap up before joining

  • Answered by AI

Skills evaluated in this interview

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

Interview preparation tips for other job seekers - They will ask you everything about swift
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(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.

  • Answered by AI
  • Q5. Type inference, type casting

Skills evaluated in this interview

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

  • Answered by AI
  • Q2. MultiThreading Related Questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Strong basic knowledge required

Skills evaluated in this interview

Tech Mahindra Interview FAQs

How many rounds are there in Tech Mahindra IOS Developer interview?
Tech Mahindra interview process usually has 2 rounds. The most common rounds in the Tech Mahindra interview process are Technical.
How to prepare for Tech Mahindra IOS Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Tech Mahindra. The most common topics and skills that interviewers at Tech Mahindra expect are Objective C, Swift, IOS, Cocoa Touch and XCode.
What are the top questions asked in Tech Mahindra IOS Developer interview?

Some of the top questions asked at the Tech Mahindra IOS Developer interview -

  1. arc in swift...read more
  2. mvvm in swift....read more
  3. Automstic referenc count...read more

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Tech Mahindra IOS Developer Interview Process

based on 1 interview

Interview experience

1
  
Bad
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Tech Mahindra IOS Developer Salary
based on 34 salaries
₹3.5 L/yr - ₹12.2 L/yr
6% more than the average IOS Developer Salary in India
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Tech Mahindra IOS Developer Reviews and Ratings

based on 3 reviews

1.1/5

Rating in categories

3.0

Skill development

1.4

Work-life balance

3.3

Salary

1.4

Job security

3.7

Company culture

3.3

Promotions

2.7

Work satisfaction

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