← SOA-C02·Amazon Web Services

Question 705 of 1,546

Networking and Content Delivery →easyMultiple ChoiceObjective-mapped

Quick Answer

The answer is to use dynamic routing (BGP) on all VPN connections and enable route propagation on the virtual private gateway (VGW). This configuration is correct because BGP automatically exchanges routes between each branch office and the VPC hub, allowing the VPC route table to learn the CIDR blocks of all on-premises networks through route propagation. As a result, traffic between branch offices is dynamically routed through the AWS cloud without requiring manual static route entries, reducing operational overhead and enabling automatic failover if a VPN tunnel goes down. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of hub-and-spoke VPN BGP routing as a scalable, low-maintenance alternative to static routing—a common trap is assuming you need to configure transit gateways or additional VPNs for inter-branch communication, but BGP propagation on a single VGW suffices for this hub model. Memory tip: think "BGP propagates spokes to the hub, and the hub routes them back out."

SOA-C02 Networking and Content Delivery Practice Question

This SOA-C02 practice question tests your understanding of networking and content delivery. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 has multiple on-premises branch offices, each with a site-to-site VPN connection to a single VPC in AWS. The SysOps administrator needs to enable communication between the branch offices using the AWS cloud as a hub. Which configuration should be implemented to achieve this with the least operational overhead?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "least"
Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.

Question 1easymultiple choice

Read the full VPN explanation →

A
Configure static routes in the VPC route table pointing to each VPN connection.
Why wrong: Static routes require manual updates for each new branch and do not automatically propagate routes between VPN connections, making this approach less scalable and more operationally heavy.
B
Use dynamic routing (BGP) on all VPN connections and enable route propagation on the virtual private gateway (VGW).
Dynamic routing with BGP and route propagation on the VGW allows the VPC to automatically exchange routes between VPN connections, enabling branch-to-branch communication without manual intervention.
C
Create a separate Transit VPC with EC2-based VPN appliances to route traffic between branch offices.
Why wrong: This approach adds unnecessary complexity and cost. The VPN CloudHub model using a single VPC with dynamic routing is simpler and achieves the same goal.
D
Place all branch offices in the same IPsec tunnel by configuring identical pre-shared keys.
Why wrong: IPsec tunnels are point-to-point connections; placing multiple branches in the same tunnel is not possible and would cause routing conflicts.

Full breakdown with real-world context →

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 dynamic routing (BGP) on all VPN connections and enable route propagation on the virtual private gateway (VGW).

Option B is correct because enabling dynamic routing (BGP) on all VPN connections and propagating routes from the virtual private gateway (VGW) into the VPC route table allows each branch office to learn the CIDR blocks of all other branch offices automatically. This eliminates the need for manual static route entries and ensures that traffic between branch offices is routed through the VPC hub with minimal operational overhead, as BGP handles failover and route updates dynamically.

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 static routes in the VPC route table pointing to each VPN connection.
Why it's wrong here
Static routes require manual updates for each new branch and do not automatically propagate routes between VPN connections, making this approach less scalable and more operationally heavy.
✓
Use dynamic routing (BGP) on all VPN connections and enable route propagation on the virtual private gateway (VGW).
Why this is correct
Dynamic routing with BGP and route propagation on the VGW allows the VPC to automatically exchange routes between VPN connections, enabling branch-to-branch communication without manual intervention.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a separate Transit VPC with EC2-based VPN appliances to route traffic between branch offices.
Why it's wrong here
This approach adds unnecessary complexity and cost. The VPN CloudHub model using a single VPC with dynamic routing is simpler and achieves the same goal.
✗
Place all branch offices in the same IPsec tunnel by configuring identical pre-shared keys.
Why it's wrong here
IPsec tunnels are point-to-point connections; placing multiple branches in the same tunnel is not possible and would cause routing conflicts.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume static routes are simpler and sufficient for hub-and-spoke communication, overlooking that BGP route propagation on the VGW provides automated, scalable route exchange with minimal ongoing management, which is the key to reducing operational overhead.

Detailed technical explanation

How to think about this question

Under the hood, when BGP is enabled on each VPN connection, the VGW acts as a BGP speaker that exchanges routes with each on-premises branch router. With route propagation enabled, the VGW automatically injects the learned BGP routes (including the CIDRs of other branches) into the VPC route table, allowing the VPC to forward inter-branch traffic without manual intervention. In a real-world scenario, if one branch's VPN tunnel goes down, BGP withdraws the associated routes, and traffic is automatically re-routed if an alternate path exists, ensuring high availability without operator action.

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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.

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.

Related SOA-C02 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Monitoring, Logging, and Remediation practice questions

Practise SOA-C02 questions linked to Monitoring, Logging, and Remediation.

Reliability and Business Continuity practice questions

Practise SOA-C02 questions linked to Reliability and Business Continuity.

Deployment, Provisioning, and Automation practice questions

Practise SOA-C02 questions linked to Deployment, Provisioning, and Automation.

Security and Compliance practice questions

Practise SOA-C02 questions linked to Security and Compliance.

Networking and Content Delivery practice questions

Practise SOA-C02 questions linked to Networking and Content Delivery.

Cost and Performance Optimization practice questions

Practise SOA-C02 questions linked to Cost and Performance Optimization.

SOA-C02 fundamentals practice questions

Practise SOA-C02 questions linked to SOA-C02 fundamentals.

SOA-C02 scenario practice questions

Practise SOA-C02 questions linked to SOA-C02 scenario.

SOA-C02 troubleshooting practice questions

Practise SOA-C02 questions linked to SOA-C02 troubleshooting.

Practice this exam

Start a free SOA-C02 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

SOA-C02 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this SOA-C02 question test?

Networking and Content Delivery — This question tests Networking and Content Delivery — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Use dynamic routing (BGP) on all VPN connections and enable route propagation on the virtual private gateway (VGW). — Option B is correct because enabling dynamic routing (BGP) on all VPN connections and propagating routes from the virtual private gateway (VGW) into the VPC route table allows each branch office to learn the CIDR blocks of all other branch offices automatically. This eliminates the need for manual static route entries and ensures that traffic between branch offices is routed through the VPC hub with minimal operational overhead, as BGP handles failover and route updates dynamically.

What should I do if I get this SOA-C02 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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 →

How Courseiva writes practice questions · Editorial policy

Keep practising

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

This SOA-C02 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 SOA-C02 exam.