Question 1mediummulti select
Full question →mediummulti selectObjective-mapped
An organization is migrating its on-premises applications to Azure Infrastructure-as-a-Service (IaaS). According to the shared responsibility model, which of the following security responsibilities remain with Microsoft? (Select two.)
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
Best answer
Physical security of the datacenters
Correct. Microsoft is responsible for the physical security of its datacenters, including perimeter fencing, guards, biometric access, and environmental controls like cooling and power.
B
Best answer
Network controls at the hypervisor layer
Correct. The hypervisor and the underlying network fabric (e.g., virtual switches) are managed by Microsoft. They ensure isolation between tenants and protect against attacks on the virtualization platform.
C
Distractor review
Patching the guest operating system on the VM
Incorrect. The customer is responsible for maintaining the guest OS, including applying security patches and updates. Microsoft only patches the host OS and hypervisor.
D
Distractor review
Configuring network security group (NSG) firewall rules
Incorrect. NSG rules are customer-managed. The customer must define inbound and outbound traffic rules to protect their VMs. Microsoft does not configure customer-specific firewall policies.
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: Physical security of the datacenters — In the shared responsibility model for IaaS, Microsoft is responsible for the security of the physical infrastructure, including datacenters, networking hardware, and the hypervisor. The customer is responsible for securing the guest operating system, applications, and data. Physical datacenter security (e.g., access controls, environmental controls) and network controls at the hypervisor layer (e.g., protecting the underlying network fabric) are always Microsoft's responsibility. Patching the guest OS and configuring firewall rules on the VM are customer responsibilities.
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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