ASP.NET Core Configuration & Environments 2

Question 1

What is the purpose of User Secrets in ASP.NET Core development?

Accepted Answer

Storing sensitive development config outside the project directory

Answer

User Secrets store sensitive configuration (API keys, connection strings) outside the project folder during development to avoid committing them to source control.

Question 2

Which CLI command initializes User Secrets for an ASP.NET Core project?

Accepted Answer

dotnet user-secrets init

Answer

dotnet user-secrets init adds a UserSecretsId GUID to the project file and sets up the local secrets store.

Question 3

How do environment-specific appsettings files override the base file?

Accepted Answer

Environment file values override matching keys in appsettings.json; unmatched keys remain from base

Answer

appsettings.{Environment}.json merges with appsettings.json; matching keys are overridden while unspecified keys remain from the base file.

Question 4

What format does ASP.NET Core use for nested configuration keys in environment variables?

Accepted Answer

Colon notation: Section:Key or double underscore: Section__Key

Answer

Environment variables use double underscores (__) as hierarchy separators because colons are not valid in all environments, mapping to Section:Key in configuration.

Question 5

What is the IHostEnvironment interface used for?

Accepted Answer

Accessing environment name, content root, and web root paths

Answer

IHostEnvironment provides the environment name (Development/Production), ContentRootPath, and other environment metadata.

ASP.NET Core Practice Test

ASP.NET Core Practice Test

ASP.NET Core Configuration & Environments 2