The correct configuration is an auto-scaling group spanning multiple zones with a load balancer. This setup directly supports horizontal scaling for stateless applications because it allows identical instances to be added or removed across availability zones based on CPU utilization, distributing traffic evenly while maintaining zero dependency on any single server. On the CompTIA Cloud+ CV0-004 exam, this question tests your understanding of elasticity and fault tolerance—key concepts for cloud architects. A common trap is confusing vertical scaling (resizing a single instance) with horizontal scaling, or assuming manual scaling meets automated demand. Remember the memory tip: “Horizontal is more, vertical is bigger.” For stateless apps, always pair an auto-scaling group with a load balancer to ensure both scalability and high availability across zones.
CV0-004 Operations and Support Practice Question
This CV0-004 practice question tests your understanding of operations and support. 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.
A cloud engineer needs to deploy a stateless application across multiple availability zones. The application must scale horizontally based on CPU utilization. Which of the following is the BEST configuration?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create an auto-scaling group spanning multiple zones with a load balancer
Option A is correct because auto-scaling groups across zones with a load balancer provide high availability and scaling. Option B is wrong: vertical scaling is not horizontal. Option C is wrong: manual scaling is not automated. Option D is wrong: spot instances may be terminated, causing instability.
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.
✗
Deploy a single large instance and increase its size as needed
Why it's wrong here
Vertical scaling is not horizontal, and a single instance is a single point of failure.
✓
Create an auto-scaling group spanning multiple zones with a load balancer
Why this is correct
This provides automated horizontal scaling and fault tolerance.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use a managed container service and manually add containers
Why it's wrong here
Manual scaling does not meet the requirement for automated scaling.
✗
Deploy instances in one zone using spot instances to reduce cost
Why it's wrong here
Spot instances are not reliable for stateless applications needing consistent scaling.
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
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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 CV0-004 NAT questions on configuration and troubleshooting.
Operations and Support — This question tests Operations and Support — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Create an auto-scaling group spanning multiple zones with a load balancer — Option A is correct because auto-scaling groups across zones with a load balancer provide high availability and scaling. Option B is wrong: vertical scaling is not horizontal. Option C is wrong: manual scaling is not automated. Option D is wrong: spot instances may be terminated, causing instability.
What should I do if I get this CV0-004 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 CV0-004 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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