4.2 Virtualization

Question 1

What is virtualization?

Answer 1

Virtualization allows a host computer to manage multiple virtual machines (VMs) using a hypervisor, optimizing resources by reducing hardware, power, and space needs.

Question 2

What are the two types of hypervisors?

Answer 2

Type 1 (bare metal) and Type 2 (operating system-based).

Question 3

What is a Type 1 hypervisor?

Answer 3

A hypervisor that runs directly on hardware, serving as the operating system.

Examples: Hyper-V, ESXi.

Question 4

What is a Type 2 hypervisor?

Answer 4

A hypervisor that runs on top of an existing operating system.

Examples: VMware Workstation, VirtualBox.

Question 5

What is server-based application virtualization?

Answer 5

Applications run on a central server and are accessed remotely via protocols like Microsoft RDP or Citrix ICA.

Question 6

What is client-based application virtualization?

Answer 6

Applications are streamed to a user’s device and run in a sandbox environment isolated from the OS.

Example: Microsoft App-V.

Question 7

What are the advantages of virtualization?

Answer 7

Reduces physical infrastructure, improves resource efficiency, and supports scalability.

Question 8

How does virtualization enhance security?

Answer 8

By enforcing encryption, access controls, and isolating data in virtualized environments.

Question 9

What is the primary use of server virtualization?

Answer 9

Centralizing IT operations to manage multiple servers as virtual machines on fewer physical devices.

Question 10

What are the benefits of application virtualization?

Answer 10

Centralized updates, better security, and reduced local data storage.

Question 11

What is an example of a server-based application virtualization tool?

Answer 11

Microsoft Terminal Services or Citrix XenApp.

Question 12

What is an example of a client-based application virtualization tool?

Answer 12

Microsoft App-V.

Question 13

How do virtual machines operate independently?

Answer 13

Each VM runs its own operating system, managed by the hypervisor.

Question 14

What protocols are commonly used in server-based application virtualization?

Answer 14

Microsoft RDP (Remote Desktop Protocol) and Citrix ICA.

Question 15

Why are Type 1 hypervisors more suitable for enterprise environments?

Answer 15

They provide direct hardware interaction for better performance and efficiency.

Question 16

What role does virtualization play in cloud computing?

Answer 16

It supports resource pooling, scalability, and multi-tenant environments essential for cloud infrastructure.

Question 17

What is the main function of a hypervisor?

Answer 17

To manage and allocate hardware resources to virtual machines.

Question 18

How does client-based application virtualization differ from server-based?

Answer 18

Client-based streams applications to devices, while server-based runs applications on a central server accessed remotely.

Question 19

What are the key security features of virtualized environments?

Answer 19

Encryption, access controls, centralized patch management, and data isolation.

Question 20

Why is virtualization essential for modern IT operations?

Answer 20

It improves efficiency, scalability, and security while reducing physical infrastructure requirements.