H11-811 · Question #197
Which of the following indicates a temporary SIP response?
The correct answer is A. 1xx. SIP 1xx codes are provisional (temporary) responses, meaning the request was received and is being processed - examples include 100 Trying and 180 Ringing, which indicate progress without finalizing the transaction. The 2xx range signals success (e.g., 200 OK), so the request…
Question
Which of the following indicates a temporary SIP response?
Options
- A1xx
- B2xx
- C3xx
- D6xx
How the community answered
(15 responses)- A80% (12)
- B13% (2)
- D7% (1)
Explanation
SIP 1xx codes are provisional (temporary) responses, meaning the request was received and is being processed - examples include 100 Trying and 180 Ringing, which indicate progress without finalizing the transaction. The 2xx range signals success (e.g., 200 OK), so the request was completed, not just in progress. The 3xx range means redirection - the client should try a different endpoint. The 6xx range indicates a global failure, meaning the request cannot be fulfilled anywhere.
Memory tip: Think of 1xx as "1-in-progress" - just like a first step, it's not the final answer. Any response below 2xx hasn't committed to success yet.
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