The city clerk's portal waits for a DNA Center wireless-health REST response before rendering. On the sequence diagram, which notation best shows that blocking synchronous call?
Select an answer to reveal the explanation.
Short Explanation
A synchronous REST wait looks like a solid ask and a dashed answer coming back with status or body. An open arrow into a queue with no return is a different, asynchronous conversation.
Full Explanation
Sequence notation distinguishes blocking REST (filled request, dashed return) from async or event flows (open arrow, often no immediate reply). Candidates must pick the notation that matches the design. Omitting the API lifeline or treating REST as always fire-and-forget misrepresents the portal's blocking call.