You are developing an application that will allow clients to download a file from your website for a specific period of time. How should you design the application to complete this task while…

Question

Options

• AConfigure the application to send the file to the client as an email attachment.
• BGenerate and assign a Cloud Storage-signed URL for the file. Make the URL available for the
• CCreate a temporary Cloud Storage bucket with time expiration specified, and give download
• DGenerate the HTTP cookies with time expiration specified. If the time is valid, copy the file from

• A
  3% (1)
• B
  74% (28)
• C
  16% (6)
• D
  8% (3)

Explanation

Cloud Storage Signed URLs are precisely designed for this use case: they grant time-limited, unauthenticated access to a specific object. The application generates a signed URL with a defined expiration, shares it with the client, and after the expiration the URL is invalid. No Google account or bucket-level IAM is needed for the end user. Option A (email attachment) is impractical for large files, offers no control over re-sharing, and is not a web download pattern. Option C (temporary bucket with time expiration) is not a real Cloud Storage feature-buckets do not auto-expire-and even if approximated with lifecycle rules, it would affect all objects and require public bucket access. Option D (HTTP cookies) requires custom server-side validation logic and copying files, adding complexity without the built-in expiration enforcement that Signed URLs provide natively.

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