ANS-C01 Network Management and Operations Practice Question
This ANS-C01 practice question tests your understanding of network management and operations. 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 uses AWS Transit Gateway to interconnect multiple VPCs and on-premises networks. They notice that traffic between two VPCs is taking a suboptimal path through the on-premises network instead of staying within AWS. What configuration change should be made to ensure optimal routing?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable route propagation from the VPC attachments into the Transit Gateway route table.
Option A is correct because Transit Gateway route tables control the path; enabling route propagation from VPC attachments will add routes for direct VPC-to-VPC communication. Option B is incorrect because VPN attachments do not affect VPC-to-VPC routing. Option C is incorrect because VPC route tables do not control Transit Gateway path selection. Option D is incorrect because cross-zone load balancing is for load balancers, not routing.
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.
✓
Enable route propagation from the VPC attachments into the Transit Gateway route table.
Why this is correct
Route propagation allows VPC routes to be exchanged, enabling direct routing.
Related concept
Static NAT maps one inside address to one outside address.
✗
Disable cross-zone load balancing on the Transit Gateway.
Add static routes to the Transit Gateway route table pointing to the VPN attachment.
Why it's wrong here
That would force traffic to on-premises, making it worse.
✗
Modify the VPC route tables to add routes to the other VPC via the Transit Gateway.
Why it's wrong here
VPC route tables are correct; the issue is in Transit Gateway routing.
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 Management and Operations — This question tests Network Management and Operations — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable route propagation from the VPC attachments into the Transit Gateway route table. — Option A is correct because Transit Gateway route tables control the path; enabling route propagation from VPC attachments will add routes for direct VPC-to-VPC communication. Option B is incorrect because VPN attachments do not affect VPC-to-VPC routing. Option C is incorrect because VPC route tables do not control Transit Gateway path selection. Option D is incorrect because cross-zone load balancing is for load balancers, not routing.
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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