SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. 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.
Network Topology
Refer to the exhibit. A solutions architect is troubleshooting why EC2 instances launched in subnet-11111111 cannot access the internet. The subnet is in a VPC with an internet gateway attached. The route table for the subnet has a default route (0.0.0.0/0) pointing to the internet gateway. What is the MOST likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Network Topology
A
The subnet's auto-assign public IP setting is disabled
MapPublicIpOnLaunch is false, so instances lack public IPs.
B
The internet gateway is not attached to the VPC
Why wrong: The exhibit implies it is attached.
C
The subnet needs a NAT gateway for internet access
Why wrong: A NAT gateway is needed for private subnets, but this subnet can be public if it assigns public IPs.
D
The subnet's route table does not have a route to the internet gateway
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The subnet's auto-assign public IP setting is disabled
The most likely cause is that the subnet's auto-assign public IP setting is disabled. Even though the subnet has a default route (0.0.0.0/0) pointing to an internet gateway, EC2 instances launched in that subnet will not receive a public IP address automatically unless the subnet's 'Auto-assign public IPv4 address' setting is enabled. Without a public IP (or an Elastic IP), the instance cannot communicate with the internet through the internet gateway, as the internet gateway requires a public IP for return traffic routing.
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.
✓
The subnet's auto-assign public IP setting is disabled
Why this is correct
MapPublicIpOnLaunch is false, so instances lack public IPs.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The internet gateway is not attached to the VPC
Why it's wrong here
The exhibit implies it is attached.
✗
The subnet needs a NAT gateway for internet access
Why it's wrong here
A NATgateway is needed for private subnets, but this subnet can be public if it assigns public IPs.
✗
The subnet's route table does not have a route to the internet gateway
Why it's wrong here
The exhibit states the route exists.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume a route to an internet gateway is sufficient for internet access, overlooking the requirement that the instance must have a public IP address for the internet gateway to route traffic correctly.
Detailed technical explanation
How to think about this question
For an EC2 instance in a public subnet to reach the internet, it must have a public IPv4 address (either auto-assigned or an Elastic IP) and the subnet's route table must have a default route to an internet gateway. The internet gateway performs NAT for instances with public IPs, translating the private IP to the public IP for outbound traffic and vice versa for inbound responses. If auto-assign public IP is disabled, the instance will only have a private IP, and the internet gateway will drop return traffic because it cannot map the private IP to a public IP.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Visual reference
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.
Design Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The subnet's auto-assign public IP setting is disabled — The most likely cause is that the subnet's auto-assign public IP setting is disabled. Even though the subnet has a default route (0.0.0.0/0) pointing to an internet gateway, EC2 instances launched in that subnet will not receive a public IP address automatically unless the subnet's 'Auto-assign public IPv4 address' setting is enabled. Without a public IP (or an Elastic IP), the instance cannot communicate with the internet through the internet gateway, as the internet gateway requires a public IP for return traffic routing.
What should I do if I get this SAP-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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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