Mobile App Design Technology & Digital Applications 2

Question 1

Which mobile architecture pattern separates the app into Model, View, and ViewModel components?

Accepted Answer

MVVM

Answer

MVVM (Model-View-ViewModel) uses a ViewModel to expose data streams and handle UI logic, keeping the View passive.

Question 2

What is the primary purpose of an API gateway in a mobile app backend?

Accepted Answer

Act as a single entry point routing requests to microservices

Answer

An API gateway serves as a unified entry point that routes client requests to appropriate backend microservices and handles cross-cutting concerns.

Question 3

In mobile development, what does 'lazy loading' refer to?

Accepted Answer

Deferring resource or data loading until it is actually needed

Answer

Lazy loading defers the loading of non-critical resources until the moment they are required, improving initial load performance.

Question 4

Which protocol is most commonly used for real-time bidirectional communication in mobile apps?

Accepted Answer

WebSocket

Answer

WebSocket provides full-duplex communication over a single TCP connection, making it ideal for real-time features like chat and live updates.

Question 5

What is the role of a Content Delivery Network (CDN) in mobile app performance?

Accepted Answer

Serving static assets from geographically closer servers

Answer

A CDN distributes static assets across edge servers worldwide so users receive content from the nearest location, reducing latency.

Mobile App Design Practice Test