This 350-701 practice question tests your understanding of cloud security. 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 cloud architect is designing a hybrid network between on-premises and AWS. They need to ensure traffic to the internet from the VPC uses the on-premises security stack for inspection. The VPC has an Internet Gateway (IGW). What must be configured to force outbound traffic to the on-premises firewall?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Update the VPC route table to point 0.0.0.0/0 to the virtual private gateway or transit gateway attachment
Option C is correct because to force all outbound internet traffic from the VPC through the on-premises firewall, the VPC route table must have a default route (0.0.0.0/0) pointing to the virtual private gateway (VPG) or transit gateway (TGW) attachment. This directs traffic over the VPN or Direct Connect to the on-premises network, where the security stack inspects it before reaching the internet. The Internet Gateway (IGW) remains present but is not used for this traffic because the route table entry overrides it.
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.
✗
Use VPC Endpoints for all services
Why it's wrong here
VPC Endpoints are for private connectivity to AWS services, not internet routing.
✗
Deploy a NAT Gateway and assign it to the route table
Why it's wrong here
NATGateway provides internet access for private subnets, but doesn't force traffic on-prem.
✓
Update the VPC route table to point 0.0.0.0/0 to the virtual private gateway or transit gateway attachment
Why this is correct
This routes internet traffic through the VPN to on-premises.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure security groups to block direct internet access
Why it's wrong here
Security groups control access, not routing.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that a NATGateway or VPC Endpoints can redirect traffic to on-premises, but the correct mechanism is a route table entry pointing to the virtual private gateway or transit gateway attachment.
Detailed technical explanation
How to think about this question
Under the hood, the VPC route table uses the most specific route that matches the destination IP; a 0.0.0.0/0 route to a VPG or TGW overrides the IGW for all internet-bound traffic, sending it over the VPN tunnel or Direct Connect virtual interface. The on-premises firewall then performs NAT and security inspection before forwarding the traffic to the internet. In a real-world scenario, this design is common for compliance requirements where all egress traffic must be logged and filtered by a centralized security stack, and it requires careful BGP propagation and route advertisement to avoid asymmetric routing.
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 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
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.
Cloud Security — This question tests Cloud Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Update the VPC route table to point 0.0.0.0/0 to the virtual private gateway or transit gateway attachment — Option C is correct because to force all outbound internet traffic from the VPC through the on-premises firewall, the VPC route table must have a default route (0.0.0.0/0) pointing to the virtual private gateway (VPG) or transit gateway (TGW) attachment. This directs traffic over the VPN or Direct Connect to the on-premises network, where the security stack inspects it before reaching the internet. The Internet Gateway (IGW) remains present but is not used for this traffic because the route table entry overrides it.
What should I do if I get this 350-701 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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