Refer to the exhibit. A bucket policy allows access to an S3 bucket. What is the intended effect?
Private IPs are not seen by S3, so the condition never matches.
Why this answer
The bucket policy includes a condition that denies requests unless the source IP is within the private IP range 10.0.0.0/16. Since private IP addresses are not routable over the public internet, any request originating from outside the VPC (i.e., from the internet) will not have a source IP in that range, causing the Deny statement to block the request. This effectively denies all requests because the only allowed IP range is a private CIDR that cannot be the source of a public internet request.
Exam trap
AWS often tests the misconception that a Deny statement with a NotIpAddress condition acts as an Allow for the specified IP range, but candidates forget that the Deny effect overrides any Allow and that private IP ranges cannot be the source of public internet requests, leading them to incorrectly choose Option D.
How to eliminate wrong answers
Option A is wrong because the policy explicitly denies requests that do not originate from the 10.0.0.0/16 range, so requests from any public IP address are denied, not allowed. Option B is wrong because the policy does not allow any request; it denies requests that do not match the IP condition, and since private IPs cannot be the source of internet requests, all external requests are denied. Option D is wrong because the policy does not allow requests only from a VPC; it uses a Deny effect with a NotIpAddress condition, which means requests from 10.0.0.0/16 are allowed only if they are not blocked by other statements, but the explicit Deny overrides any Allow, and the condition effectively blocks all internet-originated requests, not just those from a specific VPC.