- A
Use a single AWS Direct Connect connection with multiple VLANs
Why wrong: Multiple VLANs don't provide physical redundancy.
- B
Use a single AWS Direct Connect connection with two BGP sessions
Why wrong: Single connection is a single point of failure.
- C
Use two AWS Direct Connect connections from the same location, each connected to a different customer router, and configure BGP sessions over both connections
Two connections from different routers provide router-level redundancy.
- D
Use a single AWS Direct Connect connection with Bidirectional Forwarding Detection (BFD) enabled
Why wrong: BFD provides fast failure detection but not physical redundancy.
Question 1,412 of 1,705
High Availability with Single Direct Connect Location: Two Connections from Different Routers
This ANS-C01 practice question tests your understanding of network implementation. 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.
A network engineer is designing a hybrid network using AWS Direct Connect. The company requires high availability and wants to use a single AWS Direct Connect location with two connections from different customer routers. Which solution meets the high availability requirement?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use two AWS Direct Connect connections from the same location, each connected to a different customer router, and configure BGP sessions over both connections
Option C is correct because it provides two physically separate AWS Direct Connect connections from the same location, each terminating on a different customer router. This architecture eliminates single points of failure at both the connection and router level. By configuring BGP sessions over both connections, the network can use BGP path selection and failover mechanisms (e.g., AS_PATH prepending or MED) to achieve high availability. This design meets the requirement for a single location while ensuring redundancy against a router or connection failure.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 a single AWS Direct Connect connection with multiple VLANs
Why it's wrong here
Multiple VLANs don't provide physical redundancy.
- ✗
Use a single AWS Direct Connect connection with two BGP sessions
Why it's wrong here
Single connection is a single point of failure.
- ✓
Use two AWS Direct Connect connections from the same location, each connected to a different customer router, and configure BGP sessions over both connections
Why this is correct
Two connections from different routers provide router-level redundancy.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a single AWS Direct Connect connection with Bidirectional Forwarding Detection (BFD) enabled
Why it's wrong here
BFD provides fast failure detection but not physical redundancy.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The ANS-C01 exam often tests the misconception that multiple VLANs or BGP sessions on a single physical connection provide high availability, but the trap here is that true redundancy requires separate physical paths and devices, not just logical separation or faster detection protocols like BFD.
Detailed technical explanation
How to think about this question
Under the hood, AWS Direct Connect uses BGP to exchange routes between the customer router and AWS. With two connections from the same location, each BGP session runs over a separate Virtual Interface (VIF) and physical link. BFD can be enabled on both sessions to achieve fast failover (e.g., 150 ms detection). In a real-world scenario, if one customer router fails, the second router continues forwarding traffic via its own Direct Connect connection, and BGP withdraws the routes from the failed path. This design is commonly used to meet SLAs requiring 99.99% availability while avoiding the cost of a second Direct Connect location.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use two AWS Direct Connect connections from the same location, each connected to a different customer router, and configure BGP sessions over both connections — Option C is correct because it provides two physically separate AWS Direct Connect connections from the same location, each terminating on a different customer router. This architecture eliminates single points of failure at both the connection and router level. By configuring BGP sessions over both connections, the network can use BGP path selection and failover mechanisms (e.g., AS_PATH prepending or MED) to achieve high availability. This design meets the requirement for a single location while ensuring redundancy against a router or connection failure.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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.
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