Quick Answer
The answer is AWS Transit Gateway, which is the correct choice because it acts as a central hub for routing traffic between multiple VPCs and on-premises networks, and its route tables can be configured to force all internet-bound traffic through a central security appliance, such as a firewall or IDS/IPS, via a dedicated VPC attachment. This design enables centralized traffic inspection and policy enforcement without requiring each VPC to manage its own internet gateway or NAT device, solving the challenge of maintaining consistent security across a sprawling cloud environment. On the Cisco SCOR / CCNP Security Core 350-701 exam, this scenario tests your understanding of hybrid cloud traffic engineering and the distinction between Transit Gateway and simpler services like VPC peering or a single Internet Gateway—a common trap is assuming a VPC’s default route can be overridden without a central hub. Remember the memory tip: “Transit Gateway is the traffic cop that sends all internet-bound cars to the inspection station.”
This 350-701 practice question tests your understanding of cloud security. 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.
An organization is migrating to AWS and wants to ensure that all internet-bound traffic from VPCs is inspected by a central security appliance. Which AWS service should be used to redirect this traffic?
AWS Direct Connect
Why wrong: Direct Connect is for private on-premises connection, not internet traffic routing.
VPC Peering
Why wrong: VPC Peering only connects VPCs directly, not providing central internet inspection.
Internet Gateway
Why wrong: Internet Gateway simply provides internet access without inspection capabilities.
Transit Gateway
Transit Gateway can route traffic through a security VPC for inspection.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Transit Gateway
Transit Gateway is correct because it acts as a central hub that can route traffic between VPCs and on-premises networks, and it supports route tables that can direct all internet-bound traffic to a central security appliance (such as a firewall or IDS/IPS) via a VPC attachment or a Network Virtual Appliance. This enables traffic inspection and policy enforcement without requiring individual VPCs to manage their own internet gateways or NAT devices.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Direct Connect
Why it's wrong here
Direct Connect is for private on-premises connection, not internet traffic routing.
VPC Peering
Why it's wrong here
VPC Peering only connects VPCs directly, not providing central internet inspection.
Internet Gateway
Why it's wrong here
Internet Gateway simply provides internet access without inspection capabilities.
Transit Gateway
Why this is correct
Transit Gateway can route traffic through a security VPC for inspection.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Cisco often tests the misconception that VPC Peering can be used for transitive routing or central traffic inspection, but VPC Peering is non-transitive and cannot route traffic through a central hub without additional components like a Transit Gateway.
Detailed technical explanation
Transit Gateway uses a hub-and-spoke model with route tables that can be configured to send all internet-bound traffic (0.0.0.0/0) to a security appliance in a shared services VPC, which then forwards traffic to an Internet Gateway. This design avoids the need for each spoke VPC to have its own Internet Gateway and allows centralized logging and inspection, which is critical for compliance in multi-account AWS environments.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Cloud Security — study guide chapter
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FAQ
Cloud Security — This question tests Cloud Security — Read the scenario before looking for a memorised answer..
The correct answer is: Transit Gateway — Transit Gateway is correct because it acts as a central hub that can route traffic between VPCs and on-premises networks, and it supports route tables that can direct all internet-bound traffic to a central security appliance (such as a firewall or IDS/IPS) via a VPC attachment or a Network Virtual Appliance. This enables traffic inspection and policy enforcement without requiring individual VPCs to manage their own internet gateways or NAT devices.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This 350-701 practice question is part of Courseiva's free Cisco 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 350-701 exam.
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