The answer is that the root user is being used to perform administrative actions, which is the core security concern in this CloudTrail log entry. This is problematic because AWS best practices mandate that the root user should only be used for account-level tasks like closing the account or changing support plans, not for routine operations such as creating security groups. The event reveals a direct violation of the principle of least privilege, as the root account has unrestricted access and its credentials are often long-lived and not rotated, making it a high-value target. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this scenario tests your ability to identify root user activity as a red flag in CloudTrail logs, a common trap where candidates might focus on the external source IP or the specific region instead of the user identity. A useful memory tip is “Root for the root tasks only”—if you see the root user performing any resource creation or modification, flag it immediately as a security concern.
ANS-C01 Network Security, Compliance and Governance Practice Question
This ANS-C01 practice question tests your understanding of network security, compliance and governance. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The root user is being used to perform administrative actions.
The event shows the AWS root user creating a security group. Best practice is to not use root for daily tasks. The source IP is external, but that is not necessarily a concern. The security group name is not the issue. The region is us-east-1, not a concern.
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.
✓
The root user is being used to perform administrative actions.
Why this is correct
Root user should not be used for daily operations; IAM users should be used.
Related concept
Static NAT maps one inside address to one outside address.
✗
The security group was created with a permissive name.
Why it's wrong here
The name is not a security concern.
✗
The event took place in a region that is not used by the company.
Why it's wrong here
There is no indication the region is not used.
✗
The event originated from an external IP address.
Why it's wrong here
External IP could be expected if accessing via console.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
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 ANS-C01 NAT questions on configuration and troubleshooting.
Network Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The root user is being used to perform administrative actions. — The event shows the AWS root user creating a security group. Best practice is to not use root for daily tasks. The source IP is external, but that is not necessarily a concern. The security group name is not the issue. The region is us-east-1, not a concern.
What should I do if I get this ANS-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 ANS-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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