- A
Create two separate site-to-site VPN connections to two different virtual private gateways and enable ECMP.
Using ECMP across multiple VPN connections allows both tunnels to be used simultaneously.
- B
Configure BGP MED values to prefer the idle tunnel.
Why wrong: MED influences path selection but does not enable active-active use; one path is still preferred.
- C
Configure static routes with equal metrics on both tunnels.
Why wrong: Static routes do not load balance across tunnels; BGP is needed.
- D
Use a transit gateway with equal cost multipath routing.
Why wrong: Transit gateway supports ECMP, but the issue is with a virtual private gateway, not transit gateway.
Question 1,369 of 1,705
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 network engineer is troubleshooting high latency on a VPN connection between an on-premises network and AWS. The VPN uses two tunnels to a virtual private gateway. The engineer notices that traffic is only using one tunnel, and the other tunnel is idle. What should the engineer do to ensure both tunnels are utilized?
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
✓
Create two separate site-to-site VPN connections to two different virtual private gateways and enable ECMP.
Option A is correct because creating two separate site-to-site VPN connections, each to a different virtual private gateway, and enabling ECMP (Equal Cost Multipath Routing) allows traffic to be load-balanced across both tunnels. AWS site-to-site VPN connections by default operate in active/passive mode, using only one tunnel at a time. To achieve active/active usage, you need multiple VPN connections with ECMP. Option B (BGP MED) is incorrect because MED influences path selection but cannot force both tunnels to be used simultaneously when the underlying VPN is active/passive. Option C (static routes with equal metrics) is incorrect because static routes do not enable ECMP for a single VPN connection; AWS still treats tunnels as active/passive. Option D (transit gateway with ECMP) is incorrect because while a transit gateway can use ECMP across multiple VPN connections, the original scenario describes a single VPN connection to a virtual private gateway, not a transit gateway.
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.
- ✓
Create two separate site-to-site VPN connections to two different virtual private gateways and enable ECMP.
Why this is correct
Using ECMP across multiple VPN connections allows both tunnels to be used simultaneously.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure BGP MED values to prefer the idle tunnel.
Why it's wrong here
MED influences path selection but does not enable active-active use; one path is still preferred.
- ✗
Configure static routes with equal metrics on both tunnels.
Why it's wrong here
Static routes do not load balance across tunnels; BGP is needed.
- ✗
Use a transit gateway with equal cost multipath routing.
Why it's wrong here
Transit gateway supports ECMP, but the issue is with a virtual private gateway, not transit gateway.
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
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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.
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Management and Operations — This question tests Network Management and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create two separate site-to-site VPN connections to two different virtual private gateways and enable ECMP. — Option A is correct because creating two separate site-to-site VPN connections, each to a different virtual private gateway, and enabling ECMP (Equal Cost Multipath Routing) allows traffic to be load-balanced across both tunnels. AWS site-to-site VPN connections by default operate in active/passive mode, using only one tunnel at a time. To achieve active/active usage, you need multiple VPN connections with ECMP. Option B (BGP MED) is incorrect because MED influences path selection but cannot force both tunnels to be used simultaneously when the underlying VPN is active/passive. Option C (static routes with equal metrics) is incorrect because static routes do not enable ECMP for a single VPN connection; AWS still treats tunnels as active/passive. Option D (transit gateway with ECMP) is incorrect because while a transit gateway can use ECMP across multiple VPN connections, the original scenario describes a single VPN connection to a virtual private gateway, not a transit gateway.
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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Last reviewed: Jun 20, 2026
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