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Difficulty: MediumInfrastructure as a Service (IaaS)

A software testing group deploys several test nodes on Azure VMs. Under the shared responsibility model, which management task is the responsibility of Microsoft?

  1. A
    Applying security updates to the virtual machine operating systems
  2. B
    Installing and configuring database engine middleware inside the virtual machine
  3. Maintaining the physical host servers and underlying virtualization hypervisorsAnswer
  4. D
    Configuring guest operating system firewall and network port access rules

Answer

The correct answer is maintaining the physical host servers and underlying virtualization hypervisors.
In an Infrastructure as a Service (IaaS) model such as Azure VMs, Microsoft is responsible for managing the physical infrastructure, physical servers, and the hypervisor virtualization layer. The customer is responsible for maintaining the guest operating system and everything installed on top of it.

Step-by-Step Solution

1
Identify the cloud service model being used.
Azure VMs fall under the Infrastructure as a Service (IaaS) model.
Understanding the service model is necessary to determine the correct division of responsibilities.
2
Determine Microsoft's responsibilities in the IaaS model.
Microsoft is responsible for the physical host, physical network, physical datacenter, and the hypervisor virtualization layer.
This establishes the boundary of what tasks Microsoft manages.
3
Evaluate the options against the identified responsibilities.
Operating system updates, middleware configuration, and guest OS firewalls are managed by the customer. Only physical host and hypervisor maintenance is managed by Microsoft.
This confirms which option is the correct responsibility of Microsoft.

Key Concept

Shared responsibility in Infrastructure as a Service (IaaS)
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Topics

Infrastructure as a Service (IaaS)

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