- A
Multi-Region deployment with Read Replicas
Why wrong: Read Replicas do not provide automatic failover.
- B
Single-AZ deployment with Oracle Data Guard
Why wrong: Data Guard is not natively managed by RDS; requires manual setup.
- C
Single-AZ deployment with automatic backups
Why wrong: No failover; backups are for point-in-time recovery.
- D
Multi-AZ deployment
Multi-AZ provides automatic failover with a standby in a different AZ.
Question 894 of 1,746
SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 migrating a legacy application that uses an Oracle database to AWS. The application is critical and requires high availability with automatic failover. The company wants to use Amazon RDS for Oracle. The database size is 200 GB. The company needs a solution that provides automatic failover to a standby instance in a different Availability Zone with minimal downtime. Which RDS deployment option should the company use?
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
✓
Multi-AZ deployment
The correct answer is D: Multi-AZ deployment. Multi-AZ deployment for Amazon RDS automatically provisions and maintains a standby replica in a different Availability Zone. In the event of a failure, Amazon RDS automatically fails over to the standby, resulting in minimal downtime. Option A is incorrect because Multi-Region with Read Replicas is designed for read scaling and disaster recovery, not automatic failover with minimal downtime. Option B is incorrect because Single-AZ with Oracle Data Guard requires manual setup and management, and does not provide the same level of automated failover as Multi-AZ. Option C is incorrect because Single-AZ deployment lacks a standby instance; automatic backups do not provide failover capability.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Multi-Region deployment with Read Replicas
Why it's wrong here
Read Replicas do not provide automatic failover.
- ✗
Single-AZ deployment with Oracle Data Guard
Why it's wrong here
Data Guard is not natively managed by RDS; requires manual setup.
- ✗
Single-AZ deployment with automatic backups
Why it's wrong here
No failover; backups are for point-in-time recovery.
- ✓
Multi-AZ deployment
Why this is correct
Multi-AZ provides automatic failover with a standby in a different AZ.
Related concept
Standard ACLs match source addresses.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SAP-C02 ACL questions on filtering logic and placement.
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Accelerate Workload Migration and Modernization — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Multi-AZ deployment — The correct answer is D: Multi-AZ deployment. Multi-AZ deployment for Amazon RDS automatically provisions and maintains a standby replica in a different Availability Zone. In the event of a failure, Amazon RDS automatically fails over to the standby, resulting in minimal downtime. Option A is incorrect because Multi-Region with Read Replicas is designed for read scaling and disaster recovery, not automatic failover with minimal downtime. Option B is incorrect because Single-AZ with Oracle Data Guard requires manual setup and management, and does not provide the same level of automated failover as Multi-AZ. Option C is incorrect because Single-AZ deployment lacks a standby instance; automatic backups do not provide failover capability.
What should I do if I get this SAP-C02 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SAP-C02 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jun 20, 2026
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