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Given this snippet of trace spans data, what does the latency represent?

medium📝 service behavior Q13 of 15
GCP - Cloud Monitoring and Logging
Given this snippet of trace spans data, what does the latency represent?
{"spans": [{"name": "span1", "startTime": "10:00:00.000Z", "endTime": "10:00:01.500Z"}]}
AThe span ended at 1.5 seconds
BThe span started at 1.5 seconds
CThe span took 1.5 seconds to complete
DThe span took 15 seconds to complete
Step-by-Step Solution
Solution:
  1. Step 1: Calculate the difference between startTime and endTime

    End time is 10:00:01.500Z and start time is 10:00:00.000Z, so duration is 1.5 seconds.
  2. Step 2: Understand latency meaning in trace span

    Latency is the time taken from start to end of the span, which is 1.5 seconds here.
  3. Final Answer:

    The span took 1.5 seconds to complete -> Option C
  4. Quick Check:

    Latency = endTime - startTime = 1.5s [OK]
Quick Trick: Latency = end time minus start time [OK]
Common Mistakes:
  • Confusing latency with start or end time alone
  • Misreading milliseconds as seconds
  • Calculating 15 seconds instead of 1.5

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