Cloud Digital Leader Practice Question: Google Cloud products, services, and solutions
This GCDL practice question tests your understanding of google cloud products, services, and solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
```
apiVersion: serving.knative.dev/v1
kind: Service
metadata:
name: hello
spec:
template:
spec:
containers:
- image: gcr.io/cloudrun/hello
env:
- name: FOO
value: bar
resources:
limits:
memory: "512Mi"
cpu: "1"
traffic:
- percent: 100
revisionName: hello-00001
```
Given the Cloud Run service configuration above, what happens when a new revision is created after deploying a change to the container image?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Traffic continues to go to the old revision until the traffic section is updated.
Option E is correct because Cloud Run, by default, does not automatically shift traffic to a new revision. When you deploy a change, a new revision is created, but it receives 0% of traffic until you explicitly update the traffic configuration (e.g., via the console, gcloud run deploy --no-traffic, or the traffic section). This allows you to test the new revision before directing any live requests to it.
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.
✗
Traffic is split evenly between the old and new revision.
Why it's wrong here
No split is defined; traffic is pinned to one revision.
✗
The service becomes unavailable until the new revision is ready.
Why it's wrong here
Cloud Run keeps the old revision serving until the new one is ready.
✗
Cloud Run automatically creates a new revision and routes traffic to it.
Why it's wrong here
Automatic routing is disabled by the explicit traffic section.
✗
The new revision receives all traffic automatically.
Why it's wrong here
The traffic section overrides automatic routing to the latest revision.
✓
Traffic continues to go to the old revision until the traffic section is updated.
Why this is correct
The configuration explicitly routes traffic to a specific revision, so new revisions are not served until the traffic section is modified.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that Cloud Run automatically routes all traffic to the latest revision, but the default behavior actually depends on how you deploy—using --no-traffic leaves the new revision at 0% traffic, and even without that flag, the traffic update is part of the same deployment operation, not an automatic background process.
Detailed technical explanation
How to think about this question
Under the hood, Cloud Run uses a revision-based model where each deployment creates a new immutable revision. The service's traffic configuration is a list of revision-to-traffic-percentage mappings, stored as part of the Service resource. When you deploy with gcloud run deploy, the CLI defaults to sending 100% of traffic to the new revision unless you specify --no-traffic. However, if you deploy via a CI/CD pipeline or manually create a revision without updating the traffic section, the new revision sits at 0% traffic. This is critical for canary deployments or blue/green strategies where you want to validate a revision before exposing it to users.
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.
Google Cloud products, services, and solutions — This question tests Google Cloud products, services, and solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Traffic continues to go to the old revision until the traffic section is updated. — Option E is correct because Cloud Run, by default, does not automatically shift traffic to a new revision. When you deploy a change, a new revision is created, but it receives 0% of traffic until you explicitly update the traffic configuration (e.g., via the console, gcloud run deploy --no-traffic, or the traffic section). This allows you to test the new revision before directing any live requests to it.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This GCDL 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 GCDL exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.