Android Development Android Networking 2

Question 1

Which Kotlin library is commonly paired with Retrofit for asynchronous network calls using coroutines?

Accepted Answer

kotlinx.coroutines

Answer

Kotlinx.coroutines integrates with Retrofit via suspend functions, enabling clean asynchronous networking without callbacks.

Question 2

What HTTP status code indicates a successful response?

Accepted Answer

200

Answer

HTTP status code 200 (OK) indicates the request was successful and the server returned the expected response.

Question 3

Which Retrofit annotation is used to send a POST request body as JSON?

Accepted Answer

@Body

Answer

@Body annotation in Retrofit designates a parameter as the request body, which is serialized using the configured converter.

Question 4

What is the purpose of the NetworkSecurityConfig in Android?

Accepted Answer

To define trusted Certificate Authorities and network security policies

Answer

NetworkSecurityConfig allows you to customize network security settings like trusted CAs, cleartext traffic, and certificate pinning via XML.

Question 5

Which library is used for efficient image loading from URLs in Android apps?

Accepted Answer

All of the above

Answer

Glide, Picasso, and Coil are all popular Android image loading libraries that handle downloading, caching, and displaying images from URLs.

Android Development Practice Test