SCS-C02 Identity and Access Management Practice Question
This SCS-C02 practice question tests your understanding of identity and access management. 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.
A company wants to grant a set of developers the ability to launch EC2 instances but only in a specific subnet. Which THREE steps should be taken?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add a condition to the policy that restricts the subnet ID using ec2:Subnet.
Options A, B, and D are correct. Create a role with permissions to launch instances (A), attach a policy that restricts the subnet via a condition (B), and assign the role to the developers (D). Option C is wrong because a VPC endpoint does not grant IAM permissions. Option E is wrong because security groups control network traffic, not IAM permissions.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Create a VPC endpoint for EC2.
Why it's wrong here
VPC endpoints are for private connectivity, not IAM permissions.
✓
Add a condition to the policy that restricts the subnet ID using ec2:Subnet.
Why this is correct
Conditions can enforce that instances are launched only in the specified subnet.
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
CIDR notation defines the prefix length.
Block size helps identify subnet boundaries.
Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
The required host count determines the smallest suitable subnet.
TExam Day Tips
→Write the block size before choosing the subnet.
→Check whether the question asks for hosts, subnets or a specific address range.
→Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related SCS-C02 subnetting questions on CIDR, address ranges, and subnet selection.
Identity and Access Management — This question tests Identity and Access Management — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Add a condition to the policy that restricts the subnet ID using ec2:Subnet. — Options A, B, and D are correct. Create a role with permissions to launch instances (A), attach a policy that restricts the subnet via a condition (B), and assign the role to the developers (D). Option C is wrong because a VPC endpoint does not grant IAM permissions. Option E is wrong because security groups control network traffic, not IAM permissions.
What should I do if I get this SCS-C02 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related SCS-C02 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Question Discussion
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