Xamarin Certification Xamarin Testing and Deployment 2 — Questions and Answers
Question 1: Which App Center SDK feature automatically captures and reports unhandled exceptions in a Xamarin app?
- App Center Crashes (Correct answer)
- App Center Analytics
- App Center Diagnostics
- App Center Monitor
Correct answer: App Center Crashes
App Center Crashes SDK catches unhandled exceptions, symbolicated stack traces, and uploads crash reports to the portal.
Question 2: What is the purpose of provisioning profiles in Xamarin.iOS deployment?
- Authorize an app to run on specific devices and enable app services (Correct answer)
- Define UI layout dimensions
- Manage in-app purchases
- Configure push notification payloads
Correct answer: Authorize an app to run on specific devices and enable app services
Provisioning profiles combine an App ID, certificates, and device UDIDs to authorize code-signed apps to run on specific devices.
Question 3: In Xamarin.Android, what file type is produced for distributing an app outside the Play Store?
- .apk (Correct answer)
- .ipa
- .aab
- .xap
Correct answer: .apk
An APK (Android Package) is the installation file used to sideload apps on Android devices outside the Play Store.
Question 4: What does code signing accomplish in a Xamarin.iOS release build?
- Cryptographically authenticates the app and enables distribution through the App Store (Correct answer)
- Optimizes binary size
- Enables background fetch
- Unlocks push notification delivery
Correct answer: Cryptographically authenticates the app and enables distribution through the App Store
Code signing uses a distribution certificate to prove the app's identity, ensuring it hasn't been tampered with and allowing App Store distribution.
Question 5: Which App Center feature allows distributing beta builds to testers before public release?
- App Center Distribute (Correct answer)
- App Center Build
- TestFlight only
- App Center Push
Correct answer: App Center Distribute
App Center Distribute manages beta distribution, allowing teams to upload builds and invite testers via email links.
Question 6: In Xamarin, what is the significance of the keystore file for Android release builds?
- It contains the private key used to sign the APK for release distribution (Correct answer)
- It stores app configuration secrets
- It holds SSL certificates for HTTPS
- It manages in-app purchase keys
Correct answer: It contains the private key used to sign the APK for release distribution
The keystore file holds the developer's private signing key; the same key must be used for all future updates to the same app on the Play Store.
Xamarin Certification Xamarin Testing and Deployment 2
Which App Center SDK feature automatically captures and reports unhandled exceptions in a Xamarin app?