ANS-C01 Network Security, Compliance and Governance Practice Question

Exhibit

Refer to the exhibit.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Deny",
      "Principal": "*",
      "Action": "s3:*",
      "Resource": "arn:aws:s3:::example-bucket/*",
      "Condition": {
        "Bool": {
          "aws:SecureTransport": "false"
        }
      }
    },
    {
      "Effect": "Allow",
      "Principal": "*",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::example-bucket/*",
      "Condition": {
        "IpAddress": {
          "aws:SourceIp": "203.0.113.0/24"
        }
      }
    }
  ]
}

A company attaches the above bucket policy to an S3 bucket. A user from the IP range 203.0.113.0/24 makes a request over HTTPS (TLS) to download an object from the bucket. Will the request succeed?

⚠ Common exam trap

AWS often tests the nuance that an explicit Deny only applies when its conditions are fully satisfied, and candidates mistakenly assume any Deny statement automatically blocks all requests regardless of conditions.

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

✓

Yes, because the request uses HTTPS and comes from the allowed IP range.

The bucket policy includes an Allow statement that grants s3:GetObject access to requests coming from the IP range 203.0.113.0/24 over HTTPS (using the aws:SecureTransport condition). The Deny statement only denies requests that do not use HTTPS (i.e., aws:SecureTransport equals false), so a request from the allowed IP range using TLS is not affected by the Deny and is permitted by the Allow statement.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Yes, but only if the request also includes a valid AWS signature.
Why it's wrong here
Signature is not required by the policy.
✗
No, because the Allow statement is overridden by the Deny statement.
Why it's wrong here
The Deny does not apply because its condition is not met.
✗
No, because the Deny statement denies all requests regardless of the condition.
Why it's wrong here
The Deny has a condition that is not met.
✓
Yes, because the request uses HTTPS and comes from the allowed IP range.
Why this is correct
The Deny only blocks non-HTTPS requests, and the Allow permits the IP range.

Quick reference

AWS S3 Storage Class Comparison

Storage Class	Min Duration	Retrieval	Use Case
S3 Standard	None	Immediate	Frequently accessed data
S3 Standard-IA	30 days	Immediate	Infrequent access, rapid retrieval
S3 One Zone-IA	30 days	Immediate	Non-critical infrequent data
S3 Intelligent-Tiering	None	Immediate–hours	Unknown or changing access patterns
S3 Glacier Instant	90 days	Milliseconds	Archive with instant retrieval
S3 Glacier Flexible	90 days	Minutes–hours	Archive, flexible retrieval
S3 Glacier Deep Archive	180 days	Hours	Long-term compliance archive

Go deeper

1 more way this is tested on ANS-C01

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. A company applies the above S3 bucket policy. An administrator reports that an application using the AWS SDK is unable to upload objects to the bucket from an EC2 instance in the same account. The EC2 instance has an IAM role with s3:PutObject permission. What is the most likely cause?

medium

A.The bucket policy grants access to the root user only, not the IAM role.
B.The application is not using server-side encryption.
C.The bucket policy does not grant access to the bucket itself, only to objects.
✓ D.The application is using HTTP instead of HTTPS.

Why D: The bucket policy includes a condition 'aws:SecureTransport': 'true', which requires all requests to use HTTPS. If the AWS SDK is configured to use HTTP instead of HTTPS, the request will be denied even though the IAM role has s3:PutObject permission. Option A is incorrect because the bucket policy likely grants access to all users in the account or to the IAM role specifically, not just the root user. Option B is incorrect because server-side encryption is not required by the policy; only HTTPS is enforced. Option C is incorrect because the policy resource typically covers both the bucket and its objects, so access to the bucket is granted.

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This ANS-C01 practice question is part of Courseiva's free Amazon Web Services 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 ANS-C01 exam.