The answer is to provision two Direct Connect connections from different providers and configure BGP. This configuration provides the best resiliency because it ensures true physical path diversity; if one connection or provider fails, the other independent link can handle all traffic, eliminating any single point of failure. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this question tests your understanding that Direct Connect high availability design requires redundant physical links, not just redundant virtual interfaces or software configurations. A common trap is assuming multiple VIFs on a single connection offer failover, but they all share the same physical cable. Another trap is relying on a VPN backup over the same internet connection, which lacks true diversity. For the exam, remember the memory tip: “Two pipes, two providers, BGP for the win” — physical diversity is the foundation of high availability, and BGP enables automatic failover between those diverse paths.
ANS-C01 Network Management and Operations Practice Question
This ANS-C01 practice question tests your understanding of network management and operations. 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 uses AWS Direct Connect with multiple virtual interfaces (VIFs) to connect to multiple VPCs. The network team wants to ensure high availability and failover. Which configuration provides the best resiliency?
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
✓
Provision two Direct Connect connections from different providers and configure BGP
Option B is correct because using two separate Direct Connect connections provides path diversity; if one fails, the other can handle traffic. Option A is wrong because multiple VIFs on a single connection share the same physical link. Option C is wrong because a VPN backup over the same internet connection may not provide true diversity. Option D is wrong because BGP alone does not provide physical redundancy.
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.
✓
Provision two Direct Connect connections from different providers and configure BGP
Why this is correct
Two separate connections from different providers provide physical diversity and high availability.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use a single Direct Connect connection with a VPN backup over the internet
Why it's wrong here
VPN over internet may have variable performance and still relies on the internet connection.
✗
Configure BGP with multiple AS paths on the same Direct Connect connection
Why it's wrong here
BGP path manipulation does not provide physical redundancy.
✗
Create multiple private VIFs on a single Direct Connect connection
Why it's wrong here
Multiple VIFs on one connection share the same physical link, creating a single point of failure.
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
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 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: Provision two Direct Connect connections from different providers and configure BGP — Option B is correct because using two separate Direct Connect connections provides path diversity; if one fails, the other can handle traffic. Option A is wrong because multiple VIFs on a single connection share the same physical link. Option C is wrong because a VPN backup over the same internet connection may not provide true diversity. Option D is wrong because BGP alone does not provide physical redundancy.
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.
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?
Static NAT maps one inside address to one outside address.
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 →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is designing a multi-region network with Direct Connect. They have two Direct Connect connections in each region. They want to achieve the HIGHEST availability and lowest latency for cross-region traffic. Which THREE design elements should they include?
hard
✓ A.Configure BGP ASN prepending to influence path selection
✓ B.Use different Direct Connect providers in each region
✓ C.Use different Direct Connect locations within each region
D.Use multiple virtual interfaces per Direct Connect connection
E.Use the same BGP ASN for all Direct Connect connections
Why A: Options A, B, and D are correct because using different providers, different locations, and BGP ASN prepending for path selection enhance availability and latency. Option C is incorrect because using the same ASN can cause issues but is not required. Option E is incorrect because one VIF per connection is sufficient.
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Question Discussion
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