What occurs when you obtain a BlobClient reference from BlobContainerClient using a blob's name?

When a BlobClient reference is obtained from BlobContainerClient using a blob's name, a BlobClient object is created locally, and no network calls are made at this point. The BlobClient serves as a client that is configured to interact with the specified blob, allowing for actions such as reading, writing, or deleting the blob in Azure Blob Storage later on.

This approach is efficient because it allows developers to create a reference to a blob without incurring the cost or delay associated with a network call at the moment the client is created. The actual interaction with the blob, such as downloading contents or modifying data, only occurs when specific methods are invoked on the BlobClient object.

In contrast, the other options involve actions that are either not performed at this stage or only occur as a result of the subsequent method calls on the BlobClient. For example, a new blob is not created until a specific write operation is executed, and no exception is raised unless an action that requires access to the blob state is attempted after the reference is created.