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Danish Computer Technology Interview Questions and Answers

Updated 23 Apr 2022

Danish Computer Technology Interview Experiences

2 interviews found

IOS Developer Interview Questions & Answers

user image Anonymous

posted on 23 Apr 2022

I applied via LinkedIn and was interviewed in Mar 2022. There was 1 interview round.

Round 1 - One-on-one 

(1 Question)

  • Q1. Oops Dbms and Sql project related questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Confident in any situation.
Beleive in God

IOS Developer Interview Questions asked at other Companies

Q1. 1 - MVC PATTERN 2- CLOUSERS & it's type 3- Google SDK like Google maps 3- How u manage the constraints of any label , stick at every corner & center of view controller, when getting data from json.
View answer (1)

IOS Developer Interview Questions & Answers

user image Anonymous

posted on 23 Apr 2022

I applied via LinkedIn and was interviewed in Mar 2022. There was 1 interview round.

Round 1 - One-on-one 

(1 Question)

  • Q1. Oops Dbms and Sql project related questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Confident in any situation.
Beleive in God

IOS Developer Interview Questions asked at other Companies

Q1. 1 - MVC PATTERN 2- CLOUSERS & it's type 3- Google SDK like Google maps 3- How u manage the constraints of any label , stick at every corner & center of view controller, when getting data from json.
View answer (1)

Interview questions from similar companies

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

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

Interview preparation tips for other job seekers - Basics are very important for Interview , if you miss multiple questions it might leads to negative feedback. so , prepare full basic concepts with examples
Also communication is important for some campanies.

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

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
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed in Jun 2024. There were 2 interview rounds.

Round 1 - Technical 

(3 Questions)

  • Q1. Solid principle
  • Q2. Weak and unowned reference difference
  • Q3. All basic to advance question asked
Round 2 - HR 

(1 Question)

  • Q1. Basic information about yourself and salary discussion

Interview Preparation Tips

Interview preparation tips for other job seekers - Be prepared for basic ios question along with few programming questions
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

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

Round 1 - One-on-one 

(3 Questions)

  • Q1. What is Protocol Oriented Programming
  • Ans. 

    Protocol Oriented Programming is a programming paradigm in Swift that focuses on defining protocols to define behavior.

    • POP is a way of designing code by defining protocols that describe a set of behaviors.

    • It encourages composition over inheritance, allowing for more flexible and reusable code.

    • By using protocols, you can define a blueprint of methods and properties that a type must implement.

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

    Concurrency is the ability of a system to execute multiple tasks simultaneously.

    • Concurrency allows multiple tasks to run at the same time, improving performance and responsiveness.

    • It can be achieved through techniques like multithreading and asynchronous programming.

    • Concurrency is important in iOS development for tasks like networking, data processing, and UI updates.

  • Answered by AI
  • Q3. What are types of memory management in iOS
  • Ans. 

    Types of memory management in iOS include Automatic Reference Counting (ARC) and Manual Reference Counting (MRC).

    • Automatic Reference Counting (ARC) - manages memory automatically by keeping track of object references.

    • Manual Reference Counting (MRC) - requires developers to manually manage memory by retaining and releasing objects.

    • ARC is the default memory management system in iOS, while MRC is used in older codebases o...

  • Answered by AI
Round 2 - Coding Test 

Fetch data from API and showcase it onto a table view in swift

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed in Mar 2024. There was 1 interview round.

Round 1 - One-on-one 

(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

  • Answered by AI
  • 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.

  • Answered by AI
  • 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 }

  • Answered by AI
  • 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

  • Answered by AI
  • 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...

  • Answered by AI
  • 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

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Kindly brush up the basic things of iOS e,g Optional, ARC, Concurrency, Access Controls, closures their type, protocol delegate pattern etc.

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Easy
Process Duration
6-8 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed in Aug 2023. There were 2 interview rounds.

Round 1 - One-on-one 

(1 Question)

  • Q1. Basic questions related to Swift like closure, optionals, gcd, operations. Questions related to sdks like firebase, push notifications
Round 2 - One-on-one 

(1 Question)

  • Q1. It was about the projects, methodologies used, architecture, roles and responsibilities in team.

Danish Computer Technology Interview FAQs

How many rounds are there in Danish Computer Technology interview?
Danish Computer Technology interview process usually has 1 rounds. The most common rounds in the Danish Computer Technology interview process are One-on-one Round.

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Danish Computer Technology Reviews and Ratings

based on 1 review

5.0/5

Rating in categories

1.0

Skill development

3.0

Work-life balance

1.0

Salary

1.0

Job security

1.0

Company culture

2.0

Promotions

1.0

Work satisfaction

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