Cloud Digital Leader Scaling with Google Cloud operations Practice Question
This GCDL practice question tests your understanding of scaling with google cloud operations. 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.
A site reliability engineer is implementing SRE practices in Google Cloud. Which TWO of the following are key principles of SRE? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Using error budgets to balance reliability and feature velocity
Option A is correct because error budgets are a core SRE principle that define the acceptable level of failure (e.g., 99.9% uptime allows 0.1% errors). This budget is used to balance the tension between releasing new features (velocity) and maintaining system reliability, allowing teams to halt deployments when the budget is exhausted.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Using error budgets to balance reliability and feature velocity
Why this is correct
Error budgets allow teams to innovate while maintaining reliability.
Related concept
Read the scenario before looking for a memorised answer.
✗
Measuring everything with SLIs, SLOs, and SLAs
Why it's wrong here
While measurement is important, the key principle is having service level objectives, not measuring everything.
✓
Automating manual tasks
Why this is correct
Automation reduces toil and is a key SRE principle.
Related concept
Read the scenario before looking for a memorised answer.
✗
Centralizing all operations in a single team
Why it's wrong here
SRE advocates for shared ownership, not siloed operations.
✗
Deploying changes only during maintenance windows
Why it's wrong here
SRE encourages frequent, low-risk deployments, not restricted windows.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between SRE principles (like error budgets and automation) versus supporting practices (like SLIs/SLOs), leading candidates to mistakenly select measurement tools as principles.
Detailed technical explanation
How to think about this question
Error budgets are calculated as 1 - SLO (e.g., for a 99.9% SLO, the error budget is 0.1% of total requests over a rolling window, typically 30 days). When the budget is depleted, SRE teams enforce a 'freeze' on feature releases until reliability is restored, aligning development velocity with operational risk. This mechanism is formalized in Google's SRE book and relies on precise SLI monitoring (e.g., latency at p99, error rate) to track budget consumption in real time.
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.
TExam Day Tips
→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.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this GCDL question in full detail.
Scaling with Google Cloud operations — This question tests Scaling with Google Cloud operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Using error budgets to balance reliability and feature velocity — Option A is correct because error budgets are a core SRE principle that define the acceptable level of failure (e.g., 99.9% uptime allows 0.1% errors). This budget is used to balance the tension between releasing new features (velocity) and maintaining system reliability, allowing teams to halt deployments when the budget is exhausted.
What should I do if I get this GCDL question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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