The answer is to enable VPC Flow Logs on all VPCs and centralize logs in a security account, along with implementing granular route tables and using AWS Network Firewall for east-west inspection. This is correct because Transit Gateway acts as a central hub, and without centralized logging, you lose visibility into traffic patterns across multiple VPCs, which is critical for detecting anomalies and meeting compliance requirements. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this question tests your understanding of the shared responsibility model and the principle of least privilege in a multi-VPC environment—a common trap is assuming a single route table simplifies management, but that actually violates security by allowing unrestricted communication. Remember the mnemonic "LCR" for Least privilege, Centralized logs, and Route segmentation to avoid over-permissive designs.
ANS-C01 Network Management and Operations Practice Question
This ANS-C01 practice question tests your understanding of network management and operations. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 THREE are best practices for managing network security in a multi-VPC AWS environment using AWS Transit Gateway?
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
✓
Use separate Transit Gateway route tables for different environments (e.g., production, development).
Options A, C, and E are correct. Option B is incorrect because network ACLs are stateless and not needed if security groups are used. Option D is incorrect because a single route table would allow all VPCs to communicate, violating least privilege.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Use separate Transit Gateway route tables for different environments (e.g., production, development).
Why this is correct
Separate route tables enable network isolation.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Authentication checks who the user is.
✓
Centralize internet egress traffic through a shared VPC with a NAT gateway or proxy.
The clue word "best" in the question point toward this answer.
Related concept
Authentication checks who the user is.
✗
Attach all VPCs to a single Transit Gateway route table for simplicity.
Why it's wrong here
This would allow full connectivity, violating least privilege.
✓
Enable VPC Flow Logs on all VPCs and centralize logs in a security account.
Why this is correct
Flow logs provide visibility for security analysis.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Authentication checks who the user is.
✗
Use network ACLs on every subnet to filter traffic between VPCs.
Why it's wrong here
Network ACLs are stateless and add complexity; security groups are sufficient.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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 Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related ANS-C01 questions on access control and AAA configuration.
Network Management and Operations — This question tests Network Management and Operations — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Use separate Transit Gateway route tables for different environments (e.g., production, development). — Options A, C, and E are correct. Option B is incorrect because network ACLs are stateless and not needed if security groups are used. Option D is incorrect because a single route table would allow all VPCs to communicate, violating least privilege.
What should I do if I get this ANS-C01 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related ANS-C01 questions on access control and AAA configuration.
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?
Authentication checks who the user is.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ANS-C01 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.