The correct answer is sticky sessions with a load balancer, because this deployment strategy ensures that all requests from a given client are consistently routed to the same backend server, preserving session state even when traffic is distributed across multiple cloud regions. Without sticky sessions, a load balancer might send a user’s subsequent request to a different server in another region, causing the session data to be lost or requiring complex centralized session stores. On the CompTIA Cloud+ CV0-004 exam, this concept tests your understanding of stateful versus stateless application design and how to maintain session state in a high-availability, multi-region architecture. A common trap is assuming that simply adding more servers or regions automatically preserves sessions; the key is that the load balancer must be configured for session persistence, often using cookies or source IP affinity. Memory tip: think of “sticky” as glue—once a client sticks to a server, the session stays intact across regions.
CV0-004 Deployment Practice Question
This CV0-004 practice question tests your understanding of deployment. 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 company is deploying a web application across multiple cloud regions for high availability. The application must maintain session state. Which deployment strategy should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Sticky sessions with a load balancer
Sticky sessions (also known as session persistence) ensure that all requests from a client during a session are directed to the same backend server. This is critical for a multi-region deployment where the application must maintain session state, as it prevents session data loss when a load balancer distributes traffic. By using a load balancer with sticky sessions, the application can maintain stateful interactions even across multiple cloud regions, assuming the load balancer is configured for cross-region routing.
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.
✗
Active-passive failover
Why it's wrong here
Active-passive failover provides redundancy but does not guarantee session continuity.
✗
Geo-routing with DNS
Why it's wrong here
Geo-routing directs based on location, not session persistence.
✓
Sticky sessions with a load balancer
Why this is correct
Sticky sessions route a client to the same server, preserving session state.
Related concept
Read the scenario before looking for a memorised answer.
✗
Round-robin load balancing
Why it's wrong here
Round-robin distributes requests evenly but does not maintain session affinity.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse high availability with stateless architectures, assuming that any load balancing strategy (like round-robin or geo-routing) will automatically preserve session state, when in fact only sticky sessions explicitly bind a client to a specific backend server.
Detailed technical explanation
How to think about this question
Sticky sessions are typically implemented using a cookie (e.g., AWS ALB uses the AWSALB cookie) or by hashing the client's source IP address. In a multi-region deployment, the load balancer must be configured with cross-region session persistence, often requiring a global load balancer (e.g., AWS Global Accelerator or Azure Traffic Manager) that forwards requests to the appropriate regional load balancer. A real-world scenario where this matters is an e-commerce checkout process: without sticky sessions, a user adding items to a cart on one server might lose the cart data if a subsequent request hits a different server.
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 practitioner preparing for the CV0-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Sticky sessions with a load balancer — Sticky sessions (also known as session persistence) ensure that all requests from a client during a session are directed to the same backend server. This is critical for a multi-region deployment where the application must maintain session state, as it prevents session data loss when a load balancer distributes traffic. By using a load balancer with sticky sessions, the application can maintain stateful interactions even across multiple cloud regions, assuming the load balancer is configured for cross-region routing.
What should I do if I get this CV0-004 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.
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Question Discussion
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