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Azentech Software Solutions IOS Developer Interview Questions, Process, and Tips
Azentech Software Solutions IOS Developer Interview Experiences
1 interview found
Anonymous
I applied via Recruitment Consultant and was interviewed in Aug 2021. There were 4 interview rounds.
Interview Questionnaire
5 Questions
- Q1. New features added in Swift5 comparing Swift 4?
- Ans.
Swift 5 introduced ABI stability, improved performance, and new language features.
ABI stability ensures compatibility between future Swift versions
Improved performance with faster build times and reduced app size
New language features include Result type, Raw strings, and Property wrappers
- Q2. Working of completion handler
- Ans.
Completion handler is a closure that gets executed after a task is completed.
Completion handlers are used to handle asynchronous tasks in iOS development.
They are commonly used in network requests, animations, and other time-consuming tasks.
Completion handlers take in parameters and return values, allowing for customization and flexibility.
Example: URLSession.shared.dataTask(with: url) { data, response, error in // han
- Q3. Explain about GCD with examples.
- Ans.
GCD (Grand Central Dispatch) is a concurrency framework that allows developers to perform tasks asynchronously.
GCD is used to manage concurrent operations in iOS apps.
It uses dispatch queues to manage tasks and execute them in parallel.
GCD provides different types of queues such as serial, concurrent, and main queues.
Example: DispatchQueue.main.async { // code to be executed on main queue }
Example: DispatchQueue.global...
- Q4. Steps in adding collection view in Swift.
- Ans.
Steps to add collection view in Swift.
Create a UICollectionView instance
Set the delegate and data source of the collection view
Implement the required methods of UICollectionViewDataSource and UICollectionViewDelegate protocols
Register the cell class or nib file for the collection view
Return the number of items and configure the cell in the data source methods
Implement any additional delegate methods as needed
- Q5. Programmatically making a views in view controller and adding auto layout constraints programmatically.
Interview Preparation Tips
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
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 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 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 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.
(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
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
Selected
I applied via Campus Placement and was interviewed before Apr 2023. There were 2 interview rounds.
90mins of aptitude test after clearing interview
1hr of coding test then final 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
Cindhya S
I applied via Naukri.com and was interviewed in Apr 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Basic interview swift questions (medium to hard)
- Q2. Coding to find correct or whats wrong
Machine test with collection view and api using url session
(1 Question)
- Q1. Technical questions of different scenarios
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