The answer is Amazon GuardDuty and Amazon CloudWatch. GuardDuty uses machine learning and integrated threat intelligence to continuously monitor for suspicious RDS access patterns, such as unusual API calls or anomalous login behavior from known malicious IPs, while CloudWatch enables you to create custom metrics and alarms based on RDS log data, like failed authentication attempts or query anomalies. On the AWS Certified Database Specialty DBS-C01 exam, this pairing tests your understanding of detective controls versus configuration or vulnerability tools—a common trap is confusing GuardDuty with AWS Config (which tracks resource configuration changes) or Amazon Inspector (which scans for software vulnerabilities). Remember the mnemonic “G-C Watch” for GuardDuty and CloudWatch: one detects threats, the other watches logs and triggers alerts.
DBS-C01 Database Security Practice Question
This DBS-C01 practice question tests your understanding of database security. 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.
Which TWO AWS services can be used to monitor and alert on suspicious database access patterns in Amazon RDS? (Choose 2.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon CloudWatch
Amazon GuardDuty and Amazon CloudWatch can both be used to monitor and alert on suspicious access. Option A is wrong because AWS Config is for configuration monitoring. Option C is wrong because AWS Trusted Advisor provides best practices. Option E is wrong because Amazon Inspector is for vulnerability assessment.
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.
✗
Amazon Inspector
Why it's wrong here
Inspector assesses vulnerabilities, not access patterns.
✓
Amazon CloudWatch
Why this is correct
CloudWatch alarms can be set on database metrics and logs.
Related concept
Static NAT maps one inside address to one outside address.
✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor provides security recommendations, not real-time monitoring.
✗
AWS Config
Why it's wrong here
AWS Config tracks configuration changes, not access patterns.
✓
Amazon GuardDuty
Why this is correct
GuardDuty can detect suspicious activity by analyzing CloudTrail logs and VPC Flow Logs.
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
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 DBS-C01 NAT questions on configuration and troubleshooting.
Database Security — This question tests Database Security — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Amazon CloudWatch — Amazon GuardDuty and Amazon CloudWatch can both be used to monitor and alert on suspicious access. Option A is wrong because AWS Config is for configuration monitoring. Option C is wrong because AWS Trusted Advisor provides best practices. Option E is wrong because Amazon Inspector is for vulnerability assessment.
What should I do if I get this DBS-C01 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 DBS-C01 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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