This PDE practice question tests your understanding of ensuring solution quality. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Exhibit
Refer to the exhibit.
```json
{
"bindings": [
{
"role": "roles/bigquery.dataViewer",
"members": [
"group:analysts@example.com"
]
}
]
}
```
Refer to the exhibit. A BigQuery dataset is shared with the group 'analysts@example.com' using the IAM policy shown. A user who is a member of this group reports that they cannot run queries on the dataset, though they can see the tables. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Exhibit
Refer to the exhibit.
```json
{
"bindings": [
{
"role": "roles/bigquery.dataViewer",
"members": [
"group:analysts@example.com"
]
}
]
}
```
A
The group needs the 'roles/bigquery.jobUser' role at the project level.
DataViewer provides read access but not job submission; jobUser must be granted at the project level to run queries.
B
The user is using an incorrect client library version.
Why wrong: Client library version does not affect authorization; the error would be a 403 Forbidden.
C
The user's account is not activated in the group membership.
Why wrong: If the user could see tables, the group membership is effective; the issue is missing query permission.
D
The dataset has an organization policy that denies query access.
Why wrong: Organization policies affect broad categories, not specific IAM roles; if present, the user likely wouldn't see the dataset.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The group needs the 'roles/bigquery.jobUser' role at the project level.
The IAM policy grants the 'roles/bigquery.dataViewer' role at the dataset level, which allows the user to see tables but not run queries. To run queries, the user also needs the 'roles/bigquery.jobUser' role at the project level, because BigQuery query jobs are project-scoped resources. Without this role, the user lacks permission to create query jobs, even though they can view dataset metadata.
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.
✓
The group needs the 'roles/bigquery.jobUser' role at the project level.
Why this is correct
DataViewer provides read access but not job submission; jobUser must be granted at the project level to run queries.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The user is using an incorrect client library version.
Why it's wrong here
Client library version does not affect authorization; the error would be a 403 Forbidden.
✗
The user's account is not activated in the group membership.
Why it's wrong here
If the user could see tables, the group membership is effective; the issue is missing query permission.
✗
The dataset has an organization policy that denies query access.
Why it's wrong here
Organization policies affect broad categories, not specific IAM roles; if present, the user likely wouldn't see the dataset.
Common exam traps
Common exam trap: answer the scenario, not the keyword
This question tests the distinction between dataset-level and project-level roles in BigQuery. Candidates often incorrectly assume that dataset-level view permissions are sufficient to run queries, but query jobs require the 'roles/bigquery.jobUser' role at the project level.
Detailed technical explanation
How to think about this question
In BigQuery, the 'roles/bigquery.jobUser' role is required to run query jobs, and it must be granted at the project level because query jobs are project-level resources. The 'roles/bigquery.dataViewer' role only grants read access to dataset metadata and table data, not the ability to submit jobs. This separation of permissions is a common source of confusion, especially when users have dataset-level access but lack project-level job creation rights.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Ensuring solution quality — This question tests Ensuring solution quality — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The group needs the 'roles/bigquery.jobUser' role at the project level. — The IAM policy grants the 'roles/bigquery.dataViewer' role at the dataset level, which allows the user to see tables but not run queries. To run queries, the user also needs the 'roles/bigquery.jobUser' role at the project level, because BigQuery query jobs are project-scoped resources. Without this role, the user lacks permission to create query jobs, even though they can view dataset metadata.
What should I do if I get this PDE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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