Virtualization and Cloud Quiz

A Type 1 hypervisor runs…

• Inside a guest OS

• As an app in Windows/macOS/Linux

• Directly on the hardware

• In the web browser only

Answer explanation

A Type 1 hypervisor runs directly on the hardware, allowing it to manage guest operating systems efficiently without the need for a host OS. This is in contrast to Type 2 hypervisors, which run on top of a host OS.

Which is the BEST reason to take a snapshot before a risky change in a VM?

• To improve network latency

• To restore the VM quickly if the change breaks it

• To increase CPU core count

• To convert the VM into a container

Answer explanation

Taking a snapshot before a risky change allows for quick restoration of the VM if the change causes issues. This ensures minimal downtime and data loss, making it the best reason compared to the other options.

Containers typically start faster than full VMs because they…

• Include a full guest OS for each app

• Share the host OS kernel

• Run only on bare-metal hypervisors

• Use more RAM than VMs

Answer explanation

Containers start faster than full VMs because they share the host OS kernel, allowing them to utilize system resources more efficiently without the overhead of a full guest OS for each application.

You need full control of the OS and want to build custom networks in the cloud. Which service model fits BEST?

• SaaS

• PaaS

• IaaS

• DaaS (Data as a Service)

Answer explanation

IaaS (Infrastructure as a Service) provides full control over the operating system and allows users to build custom networks in the cloud, making it the best fit for your needs compared to SaaS, PaaS, or DaaS.

Your team just needs email and calendars with minimal setup. Choose the BEST model.

• IaaS

• PaaS

• SaaS

• Bare-metal hosting

Answer explanation

SaaS (Software as a Service) provides ready-to-use applications like email and calendars with minimal setup, making it the best choice for your team's needs.

Which deployment model mixes on-prem resources with public cloud to handle seasonal spikes?

• Private cloud

• Hybrid cloud

• Community cloud

• Multicloud only

Answer explanation

The hybrid cloud model combines on-premises resources with public cloud services, making it ideal for managing seasonal spikes in demand by leveraging both environments effectively.

In a shared-responsibility model for IaaS, the customer is MOST responsible for…

• Securing the provider’s datacenter power systems

• Patching the guest OS inside their VMs

• Maintaining the cloud’s physical network hardware

• The provider’s hypervisor configuration

Answer explanation

In the shared-responsibility model for IaaS, customers are responsible for managing their virtual machines, including patching the guest OS. The provider handles the underlying infrastructure, such as datacenter power and network hardware.

A school lab has one powerful desktop and wants three isolated Windows test machines for a week, with easy rollback. The MOST practical approach is…

• Type 2 hypervisor with three VMs and snapshots

• SaaS mail subscription

• PaaS with Python runtime

• Community cloud only

Answer explanation

A Type 2 hypervisor allows running multiple isolated VMs on a single desktop, making it ideal for creating three test machines. Snapshots enable easy rollback, ensuring a practical solution for the lab's needs.

Which BEST describes the cost style difference between on-prem virtualization and public cloud?

• On-prem is OpEx; cloud is CapEx

• Both are CapEx only

• On-prem is typically CapEx; cloud is typically OpEx pay-as-you-go

• Both are OpEx only

Answer explanation

On-prem virtualization typically involves capital expenditures (CapEx) for hardware and infrastructure, while public cloud services operate on a pay-as-you-go model, representing operational expenditures (OpEx). Thus, the correct choice is that on-prem is CapEx and cloud is OpEx.

Which item is MOST associated with virtual networking inside a host or cluster?

• Cable crimper

• Virtual switch (vSwitch)

• RJ-11 connector

• KVM (Keyboard-Video-Mouse) hardware

Answer explanation

The virtual switch (vSwitch) is crucial for managing virtual networking within a host or cluster, allowing virtual machines to communicate with each other and the external network, unlike the other options which serve different purposes.