- A
Increase the initial delay for the load balancer health check to 5 minutes.
Why wrong: Increasing the delay would make instances take longer to serve traffic.
- B
Configure a startup script in the instance template that installs dependencies and starts the application.
Why wrong: Startup scripts run at boot and increase startup time.
- C
Set the managed instance group's autohealing to replace unhealthy instances based on the load balancer health check.
Why wrong: Autohealing replaces unhealthy instances but does not affect startup time.
- D
Use a container-optimized OS and deploy the application as a Docker container via the startup script.
Container-optimized OS with a Docker container can start quickly if the image is cached.
- E
Create a custom machine image that includes the application and all dependencies.
A custom image has the application pre-installed, reducing boot time.
Google ACE Deploying and implementing a cloud solution Practice Question
This ACE practice question tests your understanding of deploying and implementing 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 company is deploying a stateless web application on Compute Engine. The application is served by a managed instance group with autoscaling behind an HTTP(S) load balancer. To minimize instance startup time and ensure that the application is ready to serve traffic as soon as an instance is created, which two steps should the company take? (Choose two.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
Use a container-optimized OS and deploy the application as a Docker container via the startup script.
Option A (custom image) includes the application and dependencies, eliminating the need to install them at boot. Option C (container-optimized OS) allows the application to run as a Docker container, which can start quickly if the image is cached. Option B (startup script) adds time for installation. Option D (autohealing) addresses health, not startup time. Option E (increase health check delay) increases time to serve traffic.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increase the initial delay for the load balancer health check to 5 minutes.
Why it's wrong here
Increasing the delay would make instances take longer to serve traffic.
- ✗
Configure a startup script in the instance template that installs dependencies and starts the application.
Why it's wrong here
Startup scripts run at boot and increase startup time.
- ✗
Set the managed instance group's autohealing to replace unhealthy instances based on the load balancer health check.
Why it's wrong here
Autohealing replaces unhealthy instances but does not affect startup time.
- ✓
Use a container-optimized OS and deploy the application as a Docker container via the startup script.
Why this is correct
Container-optimized OS with a Docker container can start quickly if the image is cached.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
- ✓
Create a custom machine image that includes the application and all dependencies.
Why this is correct
A custom image has the application pre-installed, reducing boot time.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related ACE NAT questions on configuration and troubleshooting.
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Deploying and implementing a cloud solution — study guide chapter
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FAQ
Questions learners often ask
What does this ACE question test?
Deploying and implementing a cloud solution — This question tests Deploying and implementing a cloud solution — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use a container-optimized OS and deploy the application as a Docker container via the startup script. — Option A (custom image) includes the application and dependencies, eliminating the need to install them at boot. Option C (container-optimized OS) allows the application to run as a Docker container, which can start quickly if the image is cached. Option B (startup script) adds time for installation. Option D (autohealing) addresses health, not startup time. Option E (increase health check delay) increases time to serve traffic.
What should I do if I get this ACE question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related ACE NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
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Last reviewed: Jun 23, 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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