Question 1mediummultiple choice
Full question →Question 247 of 300
mediummultiple choiceObjective-mapped
ACE Practice Question: A web application uses a managed instance group
This ACE practice question tests your understanding of a web application uses a managed instance group. 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 web application uses a managed instance group. Traffic spikes sharply between 9 AM and 5 PM and drops to near zero overnight. Which autoscaling metric most directly triggers scale-out before user experience degrades?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Average CPU utilization of instances in the group
CPU utilization is a valid signal but lags behind actual demand — traffic can spike before CPU rises, causing brief user-facing latency spikes.
B
Distractor review
Pub/Sub subscription queue depth
Pub/Sub queue depth is appropriate for queue-based workers, not directly for HTTP request-driven web applications.
C
Best answer
HTTP load balancing serving capacity (requests per second per instance)
This metric reflects actual HTTP request load and triggers scaling before instances become saturated, providing the most responsive scale-out for web workloads.
D
Distractor review
Disk I/O throughput
Disk I/O is rarely the bottleneck for web serving workloads — it's not an appropriate autoscaling signal for HTTP traffic.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related ACE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
What is the correct order of the Google Cloud resource hierarchy from highest to lowest level?
Question 2
A compliance archive stores legal documents accessed at most once per quarter. Which Cloud Storage class minimizes storage cost while meeting that access pattern?
Question 3
Which gcloud command creates a Compute Engine VM named 'web-01' using the e2-medium machine type in zone us-central1-a?
Question 4
A team wants to receive an email alert when the average CPU utilization of VMs in a managed instance group exceeds 80% for more than 5 minutes. What should they create in Cloud Monitoring?
Question 5
A junior developer needs read-only access to all GCP resources in a project. Which IAM role grants the minimum permissions required?
Question 6
A startup creates its first Google Cloud project. Before deploying any paid resources, what must be linked to the project?
Practice this exam
Start a free ACE practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this ACE question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: HTTP load balancing serving capacity (requests per second per instance) — HTTP load balancing serving capacity (measured as requests per second or CPU utilization per instance at the load balancer backend) is the most direct signal for web traffic autoscaling — it reflects actual request volume hitting the service. CPU utilization can lag since it rises only after instances become saturated.
What should I do if I get this ACE question wrong?
Identify which ACE 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.
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 →
Discussion
Loading comments…
Sign in to join the discussion.
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.