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 is using AWS Site-to-Site VPN connections to connect multiple branch offices to a central VPC. The network team wants to ensure high availability and automatic failover if one VPN tunnel goes down. Which configuration should be implemented?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the two tunnels provided by the VPN connection with dynamic routing (BGP)
Each AWS Site-to-Site VPN connection provides two tunnels for high availability. By using dynamic routing (BGP) with both tunnels, the VPN automatically fails over to the second tunnel if the first goes down, without manual intervention. This meets the requirement for automatic failover and high availability.
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.
✗
Configure a second VPN connection to the same customer gateway and use BGP with equal-cost multipath
Why it's wrong here
Single VPN connection already has two tunnels; a second connection is not needed.
✓
Use the two tunnels provided by the VPN connection with dynamic routing (BGP)
Read the scenario before looking for a memorised answer.
✗
Use a single tunnel and rely on AWS automatic recovery
Why it's wrong here
Single tunnel is a single point of failure.
✗
Configure static routes with a higher metric for the secondary tunnel
Why it's wrong here
Static routes require manual intervention for failover.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume a single VPN connection with two tunnels is not enough, and they over-engineer by adding a second VPN connection or using static routes, missing that AWS's built-in dual-tunnel design with BGP already provides automatic failover.
Detailed technical explanation
How to think about this question
Each AWS VPN connection consists of two tunnels terminating on different AWS endpoints for physical redundancy. BGP (Border Gateway Protocol) enables automatic route propagation and failover by advertising the same prefixes over both tunnels; when one tunnel fails, BGP withdraws the route, and traffic shifts to the remaining tunnel. In a real-world scenario, if the primary tunnel's IPSec SA expires or the physical link drops, BGP hold timers (default 30 seconds) trigger a route withdrawal, ensuring failover within seconds.
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
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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Use the two tunnels provided by the VPN connection with dynamic routing (BGP) — Each AWS Site-to-Site VPN connection provides two tunnels for high availability. By using dynamic routing (BGP) with both tunnels, the VPN automatically fails over to the second tunnel if the first goes down, without manual intervention. This meets the requirement for automatic failover and high availability.
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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Question Discussion
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