CompTIA A+ Certification Core 1 (220-1101) - Understanding Virtualization

The video tutorial introduces the concept of virtualization, explaining its power and utility. It distinguishes between virtualization and emulation, highlighting the need for compatible hardware. The tutorial covers the setup process, emphasizing the role of hypervisors, both type 1 and type 2, with a focus on Oracle VM VirtualBox. It discusses the benefits of virtual machines, including cost savings, security, and flexibility, and concludes with an overview of creating virtual networks.

What is the main difference between virtualization and emulation?

• Virtualization uses real hardware, while emulation mimics hardware.

• Virtualization is slower than emulation.

• Emulation requires a hypervisor, while virtualization does not.

• Emulation is only used for gaming.

What is necessary for a computer to support virtualization?

• A specific version of Windows

• A special type of RAM

• A CPU that supports virtualization

• An external hard drive

Which of the following is true about a Type 1 hypervisor?

• It is installed directly on the hardware.

• It requires a virtual network to function.

• It is only compatible with Linux.

• It runs on top of an existing operating system.

What is a key feature of a Type 2 hypervisor?

• It operates independently of any operating system.

• It is installed as an application on an existing OS.

• It requires a dedicated server to run.

• It cannot run multiple virtual machines simultaneously.

Which hypervisor is mentioned as a popular Type 2 hypervisor?

• VMware ESXi

• Microsoft Hyper-V

• Oracle VM VirtualBox

• KVM

What is one of the main benefits of using virtual machines for hosting websites?

• They require more physical space.

• They increase hardware costs.

• They are less secure than physical servers.

• They allow multiple websites to run on a single machine.

How can virtual machines enhance security and recovery?

• By making it difficult to back up data

• By allowing quick restoration from a backup file

• By isolating them from the internet

• By requiring more complex security protocols