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Exam MCPA - Level 1 All Questions

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Exam MCPA - Level 1 topic 1 question 38 discussion

Actual exam question from Mulesoft's MCPA - Level 1
Question #: 38
Topic #: 1
[All MCPA - Level 1 Questions]

A new upstream API is being designed to offer an SLA of 500 ms median and 800 ms maximum (99th percentile) response time. The corresponding API implementation needs to sequentially invoke 3 downstream APIs of very similar complexity.
The first of these downstream APIs offers the following SLA for its response time: median: 100 ms, 80th percentile: 500 ms, 95th percentile: 1000 ms.
If possible, how can a timeout be set in the upstream API for the invocation of the first downstream API to meet the new upstream API's desired SLA?

  • A. Set a timeout of 50 ms; this times out more invocations of that API but gives additional room for retries.
  • B. Set a timeout of 100 ms; that leaves 400 ms for the other two downstream APIs to complete.
  • C. No timeout is possible to meet the upstream API's desired SLA; a different SLA must be negotiated with the first downstream API or invoke an alternative API.
  • D. Do not set a timeout; the invocation of this API is mandatory and so we must wait until it responds.
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by AB317 at Aug. 6, 2021, 11:01 a.m.

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Freedox
8 months ago
Selected Answer: C
I think it's C. In the case of the first one finishing at 500ms, upstream will time out without even completing the 2nd and 3rd calls.
upvoted 1 times
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calazans
2 years, 5 months ago
Selected Answer: B
Set a timeout of 100 ms; that leaves 400 ms for the other two downstream APIs to complete
upvoted 1 times
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AB317
3 years, 3 months ago
Answer: B
upvoted 1 times
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