This ANS-C01 practice question tests your understanding of network implementation. 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 is designing a highly available network architecture using AWS Direct Connect. They have two Direct Connect connections from different providers to two different AWS Direct Connect locations. They want to ensure that if one connection fails, traffic automatically fails over to the other. Which TWO steps should they take? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Advertise the same prefix over both Direct Connect connections.
To achieve high availability with Direct Connect, you should configure BGP with the same prefix advertised over both connections and enable Bidirectional Forwarding Detection (BFD) for fast failure detection. Option A (same AS number) is not required; Option B (same prefix) is correct; Option D (BFD) is correct; Option C (single VIF) is not recommended; Option E (static routes) is not preferred.
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.
✓
Advertise the same prefix over both Direct Connect connections.
Why this is correct
Same prefix allows BGP to select the best path and fail over automatically.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use a different BGP AS number for each Direct Connect connection.
Why it's wrong here
Using the same AS number is recommended to avoid AS path prepend issues.
✗
Use static routes instead of BGP for the Direct Connect connections.
Why it's wrong here
Static routes do not provide dynamic failover; BGP is required.
✓
Enable Bidirectional Forwarding Detection (BFD) on both BGP sessions.
Why this is correct
BFD provides fast failure detection, speeding up convergence.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure a single virtual interface for both connections.
Why it's wrong here
Each Direct Connect connection requires its own virtual interface.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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: Advertise the same prefix over both Direct Connect connections. — To achieve high availability with Direct Connect, you should configure BGP with the same prefix advertised over both connections and enable Bidirectional Forwarding Detection (BFD) for fast failure detection. Option A (same AS number) is not required; Option B (same prefix) is correct; Option D (BFD) is correct; Option C (single VIF) is not recommended; Option E (static routes) is not preferred.
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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
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