Cloud Computing and Virtualization Flashcards

Which cloud deployment model hosts services exclusively for a single organization and can be managed on-premises or by a third party?

Answer: Private cloud

A private cloud is dedicated to one organization, offering greater control and security than a public cloud.

In virtualization, what is a 'snapshot'?

Answer: A point-in-time copy of a virtual machine's state

A snapshot captures the exact state of a VM at a moment in time, allowing rollback if needed.

Which cloud service model gives developers the most control over the operating system and middleware?

Answer: IaaS

IaaS provides raw compute, storage, and networking, giving developers full OS-level control.

What does 'elasticity' mean in cloud computing?

Answer: Automatic scaling of resources up or down based on demand

Elasticity allows cloud resources to automatically expand or contract in response to workload changes.

Which technology allows multiple virtual machines to share a single physical network interface card?

Answer: SR-IOV (Single Root I/O Virtualization)

SR-IOV partitions a physical NIC into multiple virtual functions, each assignable to a separate VM.

In AWS, what is an Availability Zone (AZ)?

Answer: One or more discrete data centers with redundant power within a region

An AZ is an isolated location within an AWS Region with independent power, cooling, and networking.

Which virtualization type runs the hypervisor directly on the server hardware without a host OS?

Answer: Type 1 (bare-metal) hypervisor

Type 1 hypervisors like VMware ESXi run directly on hardware, providing better performance and security.