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Zorluk: Çok zorInfrastructure as a Service (IaaS)

An organization is planning to migrate a legacy enterprise resource planning (ERP) application to Microsoft Azure. The migration requirements specify the following constraints:

* The application database engine requires specific operating system-level performance tuning and a custom kernel configuration.
* The organization must implement custom third-party security monitoring agents directly in the operating system kernel.
* The organization requires complete control over virtual network routing, including the deployment of custom virtual appliances.
* The organization wants to eliminate the cost and overhead of purchasing, maintaining, and housing physical servers, storage, and networking hardware.

According to the cloud shared responsibility model, which cloud service category must the organization select, and who is responsible for patching the guest operating system in this deployment?

  1. Infrastructure as a Service (IaaS); the organization is responsible for patching the guest operating system.Cevap
  2. B
    Infrastructure as a Service (IaaS); Microsoft is responsible for patching the guest operating system.
  3. C
    Platform as a Service (PaaS); Microsoft is responsible for patching the guest operating system.
  4. D
    Software as a Service (SaaS); the organization is responsible for patching the guest operating system.

Cevap

Infrastructure as a Service (IaaS); the organization is responsible for patching the guest operating system.
The correct answer is the option designating Infrastructure as a Service (IaaS) where the organization patches the guest operating system. This model is required because the scenario involves constraints (custom OS kernel configurations, OS-level tuning, custom virtual appliances) that require root/administrative access to the operating system and network settings, which are only available in IaaS. Under the cloud shared responsibility model for IaaS, Microsoft manages the physical security, servers, and hypervisor, while the customer is responsible for guest operating system configuration, patching, and security.

Adım Adım Çözüm

1
Evaluate the architectural constraints to determine the required level of control over the host.
The need for custom kernel configurations, OS-level tuning, and custom virtual routing appliances indicates that the organization requires full administrative access to the operating system and virtual networks.
This rules out PaaS and SaaS models, which abstract the operating system and networking controls away from the customer.
2
Evaluate the requirement to eliminate physical server and datacenter management.
This requirement rules out on-premises private cloud deployments and confirms a public cloud model must be used.
A public cloud model handles physical infrastructure overhead while allowing the organization to focus on virtual resources.
3
Identify the public cloud service model that meets the control requirements.
Infrastructure as a Service (IaaS) is selected because it provides virtualized compute resources (virtual machines) that grant full guest OS and networking control to the customer.
IaaS is the only service model that allows the deployment of custom virtual appliances and custom OS configurations.
4
Determine the shared responsibility owner for guest operating system patching under the IaaS model.
In IaaS, the customer retains responsibility for the guest operating system, including patching, updates, and security configurations, while Microsoft manages physical hosts, hypervisors, and physical security.
To correctly define the division of operational responsibilities.

Anahtar Kavram

Infrastructure as a Service (IaaS) provides maximum control over virtual machines and network configurations, placing the responsibility of guest operating system management, maintenance, and patching entirely on the customer.
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Infrastructure as a Service (IaaS)

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