A cloud administrator is managing a VPC within an IaaS service model and needs to install quarterly updates. Which of the following cloud components should the administrator update? (Choose three.)

Network switches are part of the underlying physical infrastructure, which is managed by the cloud provider in an IaaS service model, not the administrator.

In some IaaS deployments, particularly private clouds or bare-metal as a service, the cloud administrator is responsible for managing and applying updates to the hypervisor, which provides the virtualization layer for their virtual machines. These updates are crucial for maintaining platform security, stability, and performance.

The storage array is part of the cloud provider's physical infrastructure and is managed by them, not the IaaS customer.

Storage switches, like network switches, are part of the cloud provider's physical infrastructure and are managed by the provider.

As part of the IaaS model, the cloud administrator has full control and responsibility for the operating system installed on their virtual machines. This includes applying all necessary patches and security updates to keep the OS secure and functional.

While applications running on VMs are managed and updated by the administrator in IaaS, the operating system, antivirus software, and hypervisor represent more foundational 'cloud components' within the infrastructure stack that require regular updates.

Antivirus software is installed and runs within the operating system of the virtual machines, making its management and regular updates the direct responsibility of the cloud administrator in an IaaS environment. Keeping antivirus definitions and engines up-to-date is vital for protecting against malware and other threats.