- A
Use Cloud CDN to cache responses.
Why wrong: CDN does not improve endpoint availability.
- B
Set minReplicas to at least 2 to ensure redundancy within a region.
Multiple replicas in a region protect against instance failures.
- C
Use a single large instance instead of multiple small ones.
Why wrong: A single instance is a single point of failure.
- D
Deploy the endpoint in multiple regions.
Multi-region deployment provides failover if one region becomes unavailable.
- E
Configure health checks to detect and replace unhealthy instances.
Health checks ensure traffic is only sent to healthy instances.
Question 381 of 1,000
PMLE Serving and Scaling Models Practice Question
This PMLE practice question tests your understanding of serving and scaling models. 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.
An organization is deploying a mission-critical model on Vertex AI Endpoints. They need to ensure high availability and meet a strict SLO of 99.9% uptime. Which THREE steps should they take? (Choose 3)
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
✓
Set minReplicas to at least 2 to ensure redundancy within a region.
To meet a 99.9% SLO, they should deploy across multiple regions for redundancy, set minimum replicas to ensure baseline capacity, and configure health checks to route traffic away from unhealthy instances.
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.
- ✗
Use Cloud CDN to cache responses.
Why it's wrong here
CDN does not improve endpoint availability.
- ✓
Set minReplicas to at least 2 to ensure redundancy within a region.
Why this is correct
Multiple replicas in a region protect against instance failures.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a single large instance instead of multiple small ones.
Why it's wrong here
A single instance is a single point of failure.
- ✓
Deploy the endpoint in multiple regions.
Why this is correct
Multi-region deployment provides failover if one region becomes unavailable.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Configure health checks to detect and replace unhealthy instances.
Why this is correct
Health checks ensure traffic is only sent to healthy instances.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
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.
Detailed technical explanation
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.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which PMLE 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.
- →
Serving and Scaling Models — study guide chapter
Learn the concepts, then practise the questions
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Serving and Scaling Models practice questions
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FAQ
Questions learners often ask
What does this PMLE question test?
Serving and Scaling Models — This question tests Serving and Scaling Models — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set minReplicas to at least 2 to ensure redundancy within a region. — To meet a 99.9% SLO, they should deploy across multiple regions for redundancy, set minimum replicas to ensure baseline capacity, and configure health checks to route traffic away from unhealthy instances.
What should I do if I get this PMLE question wrong?
Identify which PMLE 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.
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 →
Last reviewed: Jul 4, 2026
This PMLE 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 PMLE exam.
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