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Droisys IOS Developer Interview Questions and Answers

Updated 14 Dec 2024

Droisys IOS Developer Interview Experiences

2 interviews found

IOS Developer Interview Questions & Answers

user image Anonymous

posted on 14 Dec 2024

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Nov 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Basic questions on about string and array data structures

Round 2 - HR 

(2 Questions)

  • Q1. Ethics , company policy
  • Q2. How they regulate

IOS Developer Interview Questions & Answers

user image Anonymous

posted on 17 Mar 2024

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Mar 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

For fresher it was a normal aptitude test of Maths and English

Round 2 - Technical 

(4 Questions)

  • Q1. Second round was technical related to coding common concepts like polymorphism, inheritance, class and struct etc.
  • Q2. What is Polymorphism
  • Ans. 

    Polymorphism is the ability of a single function or method to operate on different types of data.

    • Polymorphism allows objects of different classes to be treated as objects of a common superclass.

    • It enables a single interface to represent multiple underlying data types.

    • Examples include method overloading and method overriding in object-oriented programming.

  • Answered by AI
  • Q3. What is encapsulation
  • Ans. 

    Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

    • Encapsulation helps in hiding the internal state of an object and restricting access to it.

    • It allows for better control over the data by preventing outside code from directly accessing it.

    • Encapsulation also helps in achieving data abstraction, where the internal details of an object are hidden and only the necessary in

  • Answered by AI
  • Q4. Interface in java
  • Ans. 

    Interface in Java is a reference type in Java, similar to a class, that can contain only abstract methods, default methods, static methods, and constant variables.

    • Interfaces are used to achieve abstraction and multiple inheritance in Java.

    • All methods in an interface are public and abstract by default.

    • A class can implement multiple interfaces but can only extend one class.

    • Example: interface Shape { void draw(); }

    • Example

  • Answered by AI
Round 3 - Group Discussion 

This was final round where the VP was taking GD and asking questions related to the domain you've applied, as I applied for mobile development he asked me differences key between iOS and Android, latest available versions on those OS and some general questions

Interview Preparation Tips

Interview preparation tips for other job seekers - For freshers it's an okay place, you will be given enough time to learn.

Skills evaluated in this interview

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IOS Developer Interview Questions & Answers

Mphasis user image Khushbu Kushwah

posted on 1 Jul 2024

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Some basic Questions related to iOS concepts.
  • Q2. Multithreading and multitasking.
Round 2 - Technical 

(2 Questions)

  • Q1. Advanced iOS Questions.
  • Q2. API Calling, Json Parsing

Interview Preparation Tips

Interview preparation tips for other job seekers - Learn Basic Concepts first.
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 experience
2
Poor
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed before Aug 2023. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Basic Swift and Objective c
  • Q2. Deep into iOS Swift and Objective C
Round 2 - Technical 

(2 Questions)

  • Q1. Deep in Development and Coding test
  • Q2. Management related questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed before Oct 2023. There was 1 interview round.

Round 1 - Technical 

(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.

  • Answered by AI
  • 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...

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(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.

  • Answered by AI
  • 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.

  • Answered by AI
  • 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...

  • Answered by AI
  • 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.

  • Answered by AI

Skills evaluated in this interview

Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Apr 2024. There were 3 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Basic interview swift questions (medium to hard)
  • Q2. Coding to find correct or whats wrong
Round 2 - Coding Test 

Machine test with collection view and api using url session

Round 3 - One-on-one 

(1 Question)

  • Q1. Technical questions of different scenarios
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

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

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Droisys Interview FAQs

How many rounds are there in Droisys IOS Developer interview?
Droisys interview process usually has 2-3 rounds. The most common rounds in the Droisys interview process are Aptitude Test, Technical and Group Discussion.
What are the top questions asked in Droisys IOS Developer interview?

Some of the top questions asked at the Droisys IOS Developer interview -

  1. What is encapsulat...read more
  2. What is Polymorph...read more
  3. Interface in j...read more

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Droisys IOS Developer Interview Process

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