Zensar Technologies Senior IOS Developer Interview Questions and Answers

Complex Question are there like images patter and we have to predict next image

There are two task for coding. both are easy.

Q1. What is MVVM and how to bind data using MVVM
Ans. 
MVVM is a design pattern that separates the UI from the business logic by introducing a middle layer called ViewModel.
• Model-View-ViewModel design pattern

• ViewModel acts as a link between the Model and View

• Data binding is used to connect the ViewModel to the View

• Updates in the ViewModel automatically reflect in the View
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Q2. What is SSL pinning
Ans. 
SSL pinning is a security measure used to prevent man-in-the-middle attacks by associating a specific SSL certificate with a particular app.
• SSL pinning involves hardcoding the expected SSL certificate or public key within the mobile app.

• This helps verify the server's identity and prevent attackers from intercepting and decrypting communication.

• SSL pinning can be implemented using libraries like TrustKit or manually by ...read more
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Q1. 1.What is the difference between atomic and nonatomic properties. 2.How do you handle memory management in Swift. 3.Difference between classes and struct in Swift. 4. What is Factorial Pattern.
Ans. 
1. Atomic properties ensure that the value is always fully retrieved or set, while nonatomic properties do not guarantee this. 2. Memory management in Swift is handled automatically using Automatic Reference Counting (ARC). 3. Classes are reference types, while structs are value types in Swift. 4. Factorial pattern is a design pattern used to calculate the factorial of a number.
• Atomic properties ensure thread safety by...read more
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Q1. What is debouncing technique in swift. what is factorial pattern in swift what is dispatch_wait. Explain bluethooth in iOS. Explain InAppPurchases in iOS.
Ans. 
Debouncing technique in Swift is used to limit the rate at which a function is called, preventing it from being called multiple times in a short period.
• Debouncing involves setting a time threshold and only allowing the function to be called after that threshold has passed without any new calls.

• It is commonly used in scenarios like search bars or buttons to prevent rapid firing of events.

• Example: Implementing a search f...read more
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Q1. Questions on basic Android concepts
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Q2. Questions on Kotlin concepts
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Q1. Android Basics on mvvm architecture
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Q2. Navigation Component
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Q3. Jetpack components- work manager, viewmodel
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Q1. Managerial questions
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Q1. Concepts of react
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Q2. Javascript concepts
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Q1. About family details salary structure
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Prepare well for Role which you applied

The question about prblm solving

Any presentation or pdf to submit it at any topic or else to explain it

The discussion with my team mate

Q1. State vs Props, about Redux, deployment process, how to access Native modules(bridging), about camera access, why we need scrollview, what is JSX, what is firebase and push notification process, tel...read more
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