- A
severity >= ERROR AND timestamp > now() - 24h
Why wrong: In Cloud Logging query syntax, severity values must be quoted strings (e.g., `severity >= "ERROR"`). `now()` is not valid query syntax.
- B
severity="ERROR" AND resource.type="gce_instance"
Why wrong: This query only returns exact ERROR entries from GCE instances — it excludes CRITICAL and EMERGENCY, and restricts to one resource type unnecessarily.
- C
severity >= "ERROR"
`severity >= "ERROR"` correctly matches all entries at ERROR and above across all resource types. The time range is set separately via the console time picker.
- D
logName="projects/my-project/logs/stderr" AND severity > "WARNING"
Why wrong: This restricts results to a single log stream (stderr) and uses `>` instead of `>=`, which excludes ERROR-level entries.
Quick Answer
The correct query is severity >= "ERROR". This works because Cloud Logging uses a hierarchical severity scale where each level has a numeric value, and the >= operator compares these values to include ERROR, CRITICAL, ALERT, and EMERGENCY—all entries with severity ERROR or higher. On the Google Associate Cloud Engineer exam, this tests your understanding of Cloud Logging’s query language syntax, specifically that severity levels are strings but support comparison operators, unlike simple text fields. A common trap is using severity = "ERROR" or severity > "ERROR", which would miss CRITICAL and above, or exclude ERROR itself. Remember the severity order: DEFAULT, DEBUG, INFO, NOTICE, WARNING, ERROR, CRITICAL, ALERT, EMERGENCY. A helpful memory tip is to think of the severity scale as a ladder—using >= ensures you grab every rung from ERROR upward, not just the single step.
Google ACE Practice Question: Ensuring successful operation of a cloud solution
This ACE practice question tests your understanding of ensuring successful operation of a cloud solution. 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 security analyst needs to retrieve all Cloud Logging entries with severity ERROR or higher across all resource types in the current project. Which log query correctly filters these entries?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
severity >= "ERROR"
Option C is correct because Cloud Logging's query language supports comparison operators like `>=` for severity levels, where `ERROR` is a recognized severity level. The query `severity >= "ERROR"` retrieves all entries with severity ERROR, CRITICAL, ALERT, or EMERGENCY, as these are considered higher severity than ERROR. This matches the requirement to filter for severity ERROR or higher across all resource types without restricting the time range or resource type.
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.
- ✗
severity >= ERROR AND timestamp > now() - 24h
Why it's wrong here
In Cloud Logging query syntax, severity values must be quoted strings (e.g., `severity >= "ERROR"`). `now()` is not valid query syntax.
- ✗
severity="ERROR" AND resource.type="gce_instance"
Why it's wrong here
This query only returns exact ERROR entries from GCE instances — it excludes CRITICAL and EMERGENCY, and restricts to one resource type unnecessarily.
- ✓
severity >= "ERROR"
Why this is correct
`severity >= "ERROR"` correctly matches all entries at ERROR and above across all resource types. The time range is set separately via the console time picker.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
logName="projects/my-project/logs/stderr" AND severity > "WARNING"
Why it's wrong here
This restricts results to a single log stream (stderr) and uses `>` instead of `>=`, which excludes ERROR-level entries.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the nuance that severity values must be quoted strings and that comparison operators like `>=` work on the underlying numeric severity levels, not on string lexicographic order, leading candidates to mistakenly use unquoted values or incorrect operators like `>`.
Detailed technical explanation
How to think about this question
Cloud Logging severity levels follow a numeric ordering: DEFAULT (0), DEBUG (100), INFO (200), NOTICE (300), WARNING (400), ERROR (500), CRITICAL (600), ALERT (700), EMERGENCY (800). The `>=` operator compares these numeric values, so `severity >= "ERROR"` effectively filters for numeric severity >= 500. This is distinct from string comparison; the query engine maps severity strings to their numeric equivalents before comparison. In practice, this query is useful for monitoring critical issues across heterogeneous resources like Compute Engine, Cloud Functions, and Kubernetes clusters without needing to specify resource types.
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.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this ACE question test?
Ensuring successful operation of a cloud solution — This question tests Ensuring successful operation of a cloud solution — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: severity >= "ERROR" — Option C is correct because Cloud Logging's query language supports comparison operators like `>=` for severity levels, where `ERROR` is a recognized severity level. The query `severity >= "ERROR"` retrieves all entries with severity ERROR, CRITICAL, ALERT, or EMERGENCY, as these are considered higher severity than ERROR. This matches the requirement to filter for severity ERROR or higher across all resource types without restricting the time range or resource type.
What should I do if I get this ACE 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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Last reviewed: Jun 30, 2026
This ACE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ACE exam.
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