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GCDL Practice Question: An SRE team analyzes that their service had 47…
This GCDL practice question tests your understanding of an sre team analyzes that their service had 47…. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An SRE team analyzes that their service had 47 minutes of downtime in the past 30 days. Their SLO is 99.9% monthly availability. How should the team characterize their performance relative to the SLO?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
The SLO was missed: 99.9% availability allows approximately 43.2 minutes of downtime in a 30-day month, so 47 minutes exceeded the error budget by about 3.8 minutes
The math: 30 days × 24 hours × 60 minutes = 43,200 minutes. 0.1% × 43,200 = 43.2 minutes allowed downtime. 47 minutes actual > 43.2 minutes allowed → SLO missed by ~3.8 minutes. The error budget is exhausted and the team should prioritize reliability work.
B
Distractor review
The SLO cannot be evaluated because downtime minutes are not the correct unit for measuring availability
Availability is directly calculable from downtime minutes. Availability % = (total minutes − downtime minutes) / total minutes × 100. Downtime minutes are a valid and direct measure.
C
Distractor review
The SLO was met with margin because 47 minutes represents less than 0.5% downtime
47/43,200 = 0.109% downtime, which corresponds to 99.891% availability — below the 99.9% SLO target. Even small fractions of a percent matter in SLO math.
D
Distractor review
The SLO was met because 47 minutes is less than 1 hour of downtime per month
Meeting an SLO requires calculation against the specific target, not a round-number intuition. 99.9% allows 43.2 minutes; 47 minutes exceeds this by ~3.8 minutes. The SLO was missed.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Related practice questions
Related GCDL practice-question pages
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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FAQ
Questions learners often ask
What does this GCDL question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: The SLO was missed: 99.9% availability allows approximately 43.2 minutes of downtime in a 30-day month, so 47 minutes exceeded the error budget by about 3.8 minutes — 99.9% monthly availability allows for 0.1% downtime. A 30-day month has 43,200 minutes. 0.1% of that is 43.2 minutes of allowed downtime. The service had 47 minutes of downtime, which exceeds the 43.2-minute error budget by approximately 3.8 minutes. The SLO was missed, and the error budget is exhausted (and slightly overrun). The team should respond with reliability work rather than feature development until the next measurement period.
What should I do if I get this GCDL question wrong?
Identify which GCDL exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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