26. Which type of app runs inside the mobile web browser and is not installed from a store?
- Native app
- Flutter app
- Hybrid app
- Web app
Answer: D) Web app
Explanation: Web apps are websites optimised for mobile and run in the browser.
MCQs / Computer Science / Introduction to Mobile Applications and Platforms
Introduction to Mobile Applications and Platforms MCQs — Computer Science (page 2)
47 multiple-choice questions on Introduction to Mobile Applications and Platforms from Computer Science, each with the correct answer and, where available, a teacher's explanation. Read through them to revise the chapter, then practise the same questions one by one to test yourself.
27. JazzCash and Easypaisa are examples of which category of mobile apps?
- Games
- Social media
- Mobile financial services (m-wallets)
- Navigation
Answer: C) Mobile financial services (m-wallets)
Explanation: They are mobile wallet apps used for payments and money transfer.
28. The many different Android versions and screen sizes in use at the same time is called:
- Virtualisation
- Encapsulation
- Fragmentation
- Compilation
Answer: C) Fragmentation
Explanation: Fragmentation describes the variety of OS versions, manufacturers and screen sizes in the Android ecosystem.
29. The main disadvantage of native development for a company targeting both Android and iOS is:
- Two separate code bases increase cost and time
- No access to camera
- Cannot be published in stores
- Poor performance
Answer: A) Two separate code bases increase cost and time
Explanation: Native apps need separate code for each platform, which costs more.
30. Android's official design system is called:
- Fluent Design
- Human Interface Guidelines
- Material Design
- Bootstrap
Answer: C) Material Design
Explanation: Material Design is Google's design system; Human Interface Guidelines is Apple's.
31. A hybrid app displays its HTML/CSS/JavaScript interface inside a:
- WebView
- Linux kernel
- Content provider
- Fragment manager
Answer: A) WebView
Explanation: Hybrid apps wrap web code in a native container that shows it in a WebView (an embedded browser).
32. Installing an Android app directly from an APK file instead of from a store is called:
- Rooting
- Compiling
- Flashing
- Sideloading
Answer: D) Sideloading
Explanation: Sideloading means installing an app from a file or alternative source.
33. Why must a mobile app save its state when interrupted by a phone call?
- Because notifications need RAM
- Because the screen becomes larger
- Because the OS may pause or even kill the app while another app is in the foreground
- Because calls delete the app
Answer: C) Because the OS may pause or even kill the app while another app is in the foreground
Explanation: Interruptions move the app to the background where the OS can stop or kill it, so the state must be saved.
34. In Pakistan, the most widely used mobile operating system is:
- HarmonyOS
- Android
- iOS
- Windows 10 Mobile
Answer: B) Android
Explanation: Android has well above 90% share in Pakistan because affordable Android phones dominate the market.
35. .NET MAUI, the successor of Xamarin, uses which language?
- JavaScript
- C
- Java
- Dart
Answer: B) C
Explanation: .NET MAUI from Microsoft uses C and XAML.
36. Which tool is commonly used for UI design mock-ups?
- Figma
- Gradle
- Logcat
- Git
Answer: A) Figma
Explanation: Figma is a popular interface design and prototyping tool.
37. Fixing bugs and updating the app for new OS versions after release is called:
- Maintenance
- Prototyping
- Requirement analysis
- Deployment
Answer: A) Maintenance
Explanation: Post-release support and updates form the maintenance stage.
38. Which term describes using a portable computing device while moving and connected through wireless networks?
- Grid computing
- Cloud computing
- Mobile computing
- Batch processing
Answer: C) Mobile computing
Explanation: Mobile computing means computing on portable devices connected wirelessly while on the move.
39. Which feature makes mobile apps more useful than desktop software for ride-hailing services?
- Higher screen resolution
- Use of a mouse
- Access to GPS location and always being with the user
- Large keyboards
Answer: C) Access to GPS location and always being with the user
Explanation: Mobile apps can use the GPS location of a device that is always with the user, which is essential for ride hailing.
40. A software program designed to run on a smartphone or tablet is called a:
- Firmware
- Device driver
- Mobile application
- Web server
Answer: C) Mobile application
Explanation: A mobile application (app) is software designed to run on mobile devices such as smartphones and tablets.
41. An app that keeps working when the device has no internet is said to support:
- Offline mode
- Sideloading
- Fragmentation
- Multithreading
Answer: A) Offline mode
Explanation: Offline support means the app stores data locally and works without a connection.
42. Which type of app usually gives the BEST performance and full device access?
- Mobile website
- Hybrid
- Native
- Web
Answer: C) Native
Explanation: Native apps run directly on the platform with full API access, giving the best performance.
43. Which of the following is an official app store for Android apps?
- App Store
- Google Play
- Microsoft Store
- TestFlight
Answer: B) Google Play
Explanation: Google Play is the official store for Android apps; the App Store is Apple's.
44. Firebase is best described as:
- A backend platform providing authentication, databases, messaging and more
- A programming language
- A mobile operating system
- An IDE
Answer: A) A backend platform providing authentication, databases, messaging and more
Explanation: Firebase is Google's backend-as-a-service for mobile and web apps.
45. New apps on Google Play are uploaded in which publishing format?
- AAB (Android App Bundle)
- EXE
- JAR
- IPA
Answer: A) AAB (Android App Bundle)
Explanation: Since August 2021 new apps must be published as Android App Bundles; Play generates optimised APKs from them.
46. Microsoft ended support for Windows 10 Mobile in:
- 2020
- 2010
- 2024
- 2015
Answer: A) 2020
Explanation: Support for Windows 10 Mobile ended in January 2020.
47. Which is a key constraint that mobile developers must design around?
- Unlimited battery
- Permanent wired network
- Fixed screen size
- Limited battery life
Answer: D) Limited battery life
Explanation: Mobile devices run on batteries, so apps must avoid wasting power.
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Practise Introduction to Mobile Applications and Platforms MCQs
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