Chapter 16: Virtualization and Cloud Computing

Question 1

Virtual Machine

Answer 1

Special software running on a computer to create a complete environment that imitates all of the hardware you’d see on a real computer.

Question 2

Hypervisor

Answer 2

A layer of programming that creates, supports, and manages a virtual machine.

Question 3

Benefits of VMs

Answer 3

• Power Saving
• Hardware Consolidation
• System Recovery

Question 4

Bare-Metal Hypervisor

Answer 4

A hypervisor that does not run atop an OS

Question 5

3 Bare-Metal Hypervisors

Answer 5

1) vSphere
2) Hyper-V
3) XenServer

Question 6

Storage Area Network (SAN)

Answer 6

A server that can take a pool of hard disks and present them over the network as any number of logical disks.

Question 7

Fibre Channel (FC)

Answer 7

A self-contained, high-speed storage environment with its own storage arrays, cables, protocols, and switches.

Question 8

Network Attached Storage (NAS)

Answer 8

A dedicated file server that has its own file system and typically uses hardware and software designed for serving and storing files.

Question 9

Virtual Switch

Answer 9

Special software that enables VMs to communicate with each other without going outside of the host system.

Question 10

Virtual Router

Answer 10

A router that is implemented in software within a virtual machine.

Question 11

Virtual Firewall

Answer 11

A firewall that is implemented in software within a virtual machine in cases where it would be difficult, costly, or impossible to install a traditional physical firewall.

Question 12

Control Plane

Answer 12

Makes decisions about how to move traffic

Question 13

Data Plane

Answer 13

Responsible for executing decisions made by the control plane

Question 14

Software Defined Networking

Answer 14

Cuts the control plane of individual devices out and lets an all-knowing program called a network controller dictate how both physical and virtual network components move traffic through the network.

Question 15

Infrastructure as a Service (IaaS)

Answer 15

Providing servers, switches, and routers to customers for a set rate. Basically virtualization capabilities without having to purchase hardware.

Question 16

Platform as a Service (PaaS)

Answer 16

A complete deployment and management system that gives programmers all the tools they need to administer and maintain a Web application

Question 17

Software as a Service (SaaS)

Answer 17

Provides access to necessary applications wherever you have an Internet connection, without having to carry data with you or regularly update software. Google Maps etc.

Question 18

Public Cloud

Answer 18

Software, platforms, and infrastructure that the general public can use.