ANS-C01 Network Security, Compliance and Governance Practice Question
A company wants to allow a specific IAM user to manage network ACLs for a specific VPC only. Which IAM policy action should be used?
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
✓
ec2:ModifyNetworkAclAttribute
Managing network ACLs requires multiple IAM actions, including creating, deleting, and modifying rules and attributes. None of the listed actions alone sufficiently allows full management. ec2:ModifyNetworkAclAttribute only modifies attributes like tags, ec2:CreateNetworkAcl only creates new ACLs, ec2:DescribeNetworkAcls is read-only, and ec2:AuthorizeSecurityGroupIngress is for security groups. To allow a user to manage network ACLs, a combination of actions such as ec2:CreateNetworkAcl, ec2:DeleteNetworkAcl, ec2:ReplaceNetworkAclEntry, etc. is needed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ec2:AuthorizeSecurityGroupIngress
Why it's wrong here
ec2:AuthorizeSecurityGroupIngress is used for security groups, not network ACLs.
- ✓
ec2:ModifyNetworkAclAttribute
Why this is correct
ec2:ModifyNetworkAclAttribute allows modification of network ACL attributes, which is a management action.
- ✗
ec2:CreateNetworkAcl
Why it's wrong here
ec2:CreateNetworkAcl only creates new network ACLs but does not encompass full management.
- ✗
ec2:DescribeNetworkAcls
Why it's wrong here
ec2:DescribeNetworkAcls is read-only and does not permit management.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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