Question 451 of 500
Security PrinciplesmediumMultiple ChoiceObjective-mapped

ISC2 CC Security Principles Practice Question

This CC practice question tests your understanding of security principles. 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.

Exhibit

Refer to the exhibit.
```
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::corporate-bucket/*",
      "Condition": {
        "IpAddress": {
          "aws:SourceIp": "10.0.0.0/8"
        }
      }
    },
    {
      "Effect": "Deny",
      "Action": "s3:*",
      "Resource": "arn:aws:s3:::corporate-bucket/executive/*"
    }
  ]
}
```

The exhibit shows an AWS S3 bucket policy. What is the net effect for a user with IP 10.1.1.1 trying to read the object 'executive/salary.xlsx'?

Question 1mediummultiple choice
Full question →

Exhibit

Refer to the exhibit.
```
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::corporate-bucket/*",
      "Condition": {
        "IpAddress": {
          "aws:SourceIp": "10.0.0.0/8"
        }
      }
    },
    {
      "Effect": "Deny",
      "Action": "s3:*",
      "Resource": "arn:aws:s3:::corporate-bucket/executive/*"
    }
  ]
}
```

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

Denied because the Deny statement explicitly blocks access to the executive prefix

The policy has an Allow for GetObject from IP range 10.0.0.0/8 (including 10.1.1.1) but also a Deny for all actions on the 'executive/' prefix. Deny overrides Allow (explicit deny). So the read is denied. Option B is correct. Option A is wrong because the Deny applies. Option C and D are wrong.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Answer analysis

Option-by-option breakdown

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

  • Allowed because the IP matches the Allow condition

    Why it's wrong here

    Explicit Deny overrides any Allow.

  • Denied because the Deny statement explicitly blocks access to the executive prefix

    Why this is correct

    The Deny statement explicitly denies all actions on the executive prefix, overriding the Allow.

    Related concept

    Static NAT maps one inside address to one outside address.

  • Allowed only if the user is authenticated with MFA

    Why it's wrong here

    No MFA condition is in the policy.

  • Denied only if the request originates from outside 10.0.0.0/8

    Why it's wrong here

    The Deny is unconditional for the executive prefix, so it denies even from within the range.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

  • Static NAT maps one inside address to one outside address.
  • PAT allows many inside hosts to share one public address using ports.
  • Inside local and inside global describe the private and translated addresses.
  • NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

  • Identify inside and outside interfaces first.
  • Check whether the scenario needs static NAT, dynamic NAT or PAT.
  • Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Real-world example

How this comes up in practice

A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Security exam questions test whether you can match controls to threats in context — not just recall definitions.

What to study next

Got this wrong? Here's your next step.

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related CC NAT questions on configuration and troubleshooting.

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FAQ

Questions learners often ask

What does this CC question test?

Security Principles — This question tests Security Principles — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: Denied because the Deny statement explicitly blocks access to the executive prefix — The policy has an Allow for GetObject from IP range 10.0.0.0/8 (including 10.1.1.1) but also a Deny for all actions on the 'executive/' prefix. Deny overrides Allow (explicit deny). So the read is denied. Option B is correct. Option A is wrong because the Deny applies. Option C and D are wrong.

What should I do if I get this CC question wrong?

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related CC NAT questions on configuration and troubleshooting.

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

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Last reviewed: Jun 24, 2026

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