Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A multinational corporation stores highly sensitive intellectual property in SharePoint Online. To meet regulatory requirements, they need an additional layer of encryption beyond Microsoft's baseline encryption. The company wants to manage their own encryption keys using Azure Key Vault, so that if they remove the key from the service, the data becomes unreadable. Which Microsoft Purview solution should they implement?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Double Key Encryption
Double Key Encryption uses two keys: one stored in Azure Key Vault and the other held by the customer outside Microsoft (e.g., on-premises HSM). The scenario states the company wants to manage keys in Azure Key Vault, not an external location, so Customer Key is more appropriate.
B
Best answer
Customer Key
Correct. Microsoft Purview Customer Key allows customers to provide and manage their own encryption keys using Azure Key Vault, providing an additional layer of encryption on top of the baseline. Data is encrypted using these keys, and the customer can control key access.
C
Distractor review
Information Rights Management
Information Rights Management (IRM) in Microsoft 365 applies restrictions to documents (e.g., preventing copy, print, forward). It does not provide per-tenant encryption key management; it uses usage policies.
D
Distractor review
Customer Lockbox
Customer Lockbox provides a process for granting Microsoft support engineers temporary access to data when needed for troubleshooting. It is not an encryption key management solution.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related SC-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A company must retain all customer contracts for 10 years to comply with industry regulations. After 10 years, the contracts must be permanently deleted. Which Microsoft Purview solution should be used to automate this process?
Question 2
A company uses a cloud-based SaaS (Software as a Service) application for customer relationship management. According to the shared responsibility model, which security responsibility is primarily handled by the customer?
Question 3
A company runs a mix of on-premises servers and Azure virtual machines. They deploy Microsoft Defender for Endpoint on all servers. The security team wants to create custom queries to hunt for a specific attack pattern that involves a sequence of events across multiple machines, such as a PowerShell script being downloaded and then executed on several servers. They need to write their own detection rules based on advanced hunting data. Which Microsoft 365 Defender capability should they use?
Question 4
A company runs a consumer-facing e-commerce website and wants to allow customers to sign in using their existing social media accounts such as Google, Facebook, or LinkedIn. Which Microsoft Entra ID solution should they implement?
Question 5
A company has a hybrid identity environment with Active Directory synchronizing to Microsoft Entra ID. They want users to be able to reset their own on-premises passwords via the cloud SSPR portal. What is the minimum license required for this capability?
Question 6
A company uses a cloud-based Customer Relationship Management (CRM) system that is delivered as Software-as-a-Service (SaaS). According to the shared responsibility model, which security responsibility is primarily handled by the customer?
FAQ
Questions learners often ask
What does this SC-900 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Customer Key — Microsoft Purview Customer Key allows organizations to provide and control their own encryption keys for data at rest in Microsoft 365 services (including SharePoint Online, Exchange Online, and OneDrive for Business). Keys are stored in Azure Key Vault, and the customer can revoke access at any time. This is distinct from Double Key Encryption (DKE) which uses a key stored outside Microsoft's control (e.g., on-premises), and from Information Rights Management (IRM) which protects documents via usage restrictions, not encryption key management. Customer Lockbox is for approving Microsoft support access to data. Understanding these distinctions is required for the SC-900 exam.
What should I do if I get this SC-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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