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Design security solutions for infrastructure →hardMultiple ChoiceObjective-mapped

Quick Answer

The answer is the Storage Account Contributor role, identified by the GUID b24988ac-6180-42a0-ab88-20f7382dd24c. This GUID is the unique roleDefinitionId assigned to the built-in Azure RBAC role that grants full management of storage accounts, including the ability to read and regenerate storage account keys. On the Microsoft Cybersecurity Architect exam, this tests your ability to map a PIM roleDefinitionId to its corresponding Azure resource role, a common task when analyzing just-in-time access requests in Microsoft Entra PIM. A frequent trap is confusing this GUID with the Contributor role (which has a different ID) or assuming it grants broader resource access; remember, Storage Account Contributor is scoped strictly to storage accounts and their keys. For a memory tip, think of the GUID as a key to the key vault—b24988ac unlocks the storage kingdom, but only the storage kingdom.

SC-100 Design security solutions for infrastructure Practice Question

This SC-100 practice question tests your understanding of design security solutions for infrastructure. 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.
```json
{
  "properties": {
    "status": "Active",
    "activationMessage": "Approve access to Storage Account",
    "approvalType": "Temporary",
    "duration": "PT2H",
    "justification": "Emergency troubleshooting",
    "roleDefinitionId": "b24988ac-6180-42a0-ab88-20f7382dd24c",
    "startDateTime": "2024-03-01T10:00:00Z",
    "expirationDateTime": "2024-03-01T12:00:00Z",
    "memberType": "Direct",
    "principalId": "12345678-1234-1234-1234-123456789abc",
    "scope": "/subscriptions/abc123-def456-7890-abcd-ef1234567890/resourceGroups/Production/providers/Microsoft.Storage/storageAccounts/corpstorage"
  }
}
```

Refer to the exhibit. An administrator is reviewing a just-in-time (JIT) access request in Microsoft Entra Privileged Identity Management (PIM) for Azure resources. The request was approved. What does the roleDefinitionId 'b24988ac-6180-42a0-ab88-20f7382dd24c' correspond to?

Question 1hardmultiple choice
Study the full multicast explanation →

Exhibit

Refer to the exhibit.
```json
{
  "properties": {
    "status": "Active",
    "activationMessage": "Approve access to Storage Account",
    "approvalType": "Temporary",
    "duration": "PT2H",
    "justification": "Emergency troubleshooting",
    "roleDefinitionId": "b24988ac-6180-42a0-ab88-20f7382dd24c",
    "startDateTime": "2024-03-01T10:00:00Z",
    "expirationDateTime": "2024-03-01T12:00:00Z",
    "memberType": "Direct",
    "principalId": "12345678-1234-1234-1234-123456789abc",
    "scope": "/subscriptions/abc123-def456-7890-abcd-ef1234567890/resourceGroups/Production/providers/Microsoft.Storage/storageAccounts/corpstorage"
  }
}
```

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

✓

Storage Account Contributor

The roleDefinitionId 'b24988ac-6180-42a0-ab88-20f7382dd24c' is the GUID for the 'Storage Account Contributor' role in Azure RBAC. This is a built-in role that allows management of storage accounts, including access to storage account keys. The request is for temporary access to a storage account, and the role provides the necessary permissions.

Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.

Answer analysis

Option-by-option breakdown

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

  • ✗

    Storage Blob Data Contributor

    Why it's wrong here

    Incorrect: That role has a different GUID.

  • ✓

    Storage Account Contributor

    Why this is correct

    Correct: The GUID matches the built-in Storage Account Contributor role.

    Related concept

    Authentication checks who the user is.

  • ✗

    Contributor

    Why it's wrong here

    Incorrect: Contributor role has a different GUID.

  • ✗

    Reader

    Why it's wrong here

    Incorrect: Reader role has a different GUID.

Common exam traps

Common exam trap: authentication is not authorization

Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.

Detailed technical explanation

How to think about this question

This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.

KKey Concepts to Remember

  • Authentication checks who the user is.
  • Authorization controls what the user is allowed to do after login.
  • Privilege levels affect access to EXEC and configuration commands.
  • AAA, TACACS+ and RADIUS can separate login success from command access.

TExam Day Tips

  • Do not assume successful login means full administrative access.
  • Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
  • Separate login problems from permission problems before choosing the answer.

Key takeaway

Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.

Real-world example

How this comes up in practice

A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

What to study next

Got this wrong? Here's your next step.

Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-100 questions on access control and AAA configuration.

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FAQ

Questions learners often ask

What does this SC-100 question test?

Design security solutions for infrastructure — This question tests Design security solutions for infrastructure — Authentication checks who the user is..

What is the correct answer to this question?

The correct answer is: Storage Account Contributor — The roleDefinitionId 'b24988ac-6180-42a0-ab88-20f7382dd24c' is the GUID for the 'Storage Account Contributor' role in Azure RBAC. This is a built-in role that allows management of storage accounts, including access to storage account keys. The request is for temporary access to a storage account, and the role provides the necessary permissions.

What should I do if I get this SC-100 question wrong?

Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-100 questions on access control and AAA configuration.

What is the key concept behind this question?

Authentication checks who the user is.

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Last reviewed: Jun 21, 2026

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This SC-100 practice question is part of Courseiva's free Microsoft 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 SC-100 exam.