Virtualization and Cloud Computing

Question 1

sophisticated software that handles the input and output to/from a virtual machine that normally be handled by hardware

Answer 1

hypervisor

Question 2

software or hardware that converts inputs into an entirely different platform

Answer 2

emulator

Question 3

a “copy” of a virtual machine that saves the VM’s state at that moment, enabling for a quick return later

Answer 3

snapshot

Question 4

a hypervisor/OS combo that has no software between it and the hardware; also, Type-1 hypervisor

Answer 4

bare-metal hypervisor

Question 5

a hypervisor that does require software between it and the hardware, such as VMWare Workstation

Answer 5

Type-2 hypervisor

Question 6

open source, Linux-based hypervisor that is closely integrated into Linux’s kernel

Answer 6

Kernal-based Virtual Machine (KVM)

Question 7

a server that can present a number of hard disks over the network as a number of logical disks; doesn’t have its own file system

Answer 7

storage area network (SAN)

Question 8

infrastructure choice for supporting a SAN, designed for high-performance stroage

Answer 8

Fibre Channel (FC)/Fibre Channel over Ethernet (FCoE)

Question 9

infrastructure choice for supporting a SAN, uses the SCSI protocol to communicate across networks with cheap, readily available hardware

Answer 9

Internet Small Computer System Interface (iSCSI)

Question 10

larger size frame, usually about 9000 bytes long, designed to reduce the number of frames moving through a network

Answer 10

jumbo frame

Question 11

infrastructure choice for supporting a SAN, uses unique NICs and cabling; links are usually aggregated, using 4 or 8 connections

Answer 11

Infini Band (IB)

Question 12

dedicated file server with its own file system and uses hardware and software designed for serving and storing files

Answer 12

network attached storage (NAS)

Question 13

method for giving a VM an IP address by using a software connection to pass traffic from a real NIC to a virtual one

Answer 13

bridge the NIC

Question 14

the centralized configuration, installation, and handling of every switch in a network

Answer 14

distributed switching

Question 15

part of a physical router or switch that makes decisions on how to move traffic

Answer 15

control plane

Question 16

part of a phsyical router or switch that is responsible for executing the decisions of the control plane

Answer 16

data plane

Question 17

form of networking that requires a network controller to dicate the flow of traffic via hardware and virtual routers and switches rather than a control plane; data planes must be designed for this

Answer 17

Software defined Networking (SDN)

Question 18

program that controls the flow of traffics from switches and routers in an SDN; is programmable

Answer 18

network controller

Question 19

feature of a network controller in an SDN that allows one to write code to control how the entire network will behave

Answer 19

programmable

Question 20

cloud service designed to provide virtual hardware, which minimizes idle hardware, protects against data loss and downtime, and responds to spikes in demand; provided commonly by large-scale, global providers; services are offered at a set rate

Answer 20

Infrastructure as a Service (IaaS)

Question 21

a cloud service that building upon an infrastructure to provide a Web application deployment and management system; gives programmers all the tools they need deploy, administer, and maintain an application

Answer 21

Platform as a Service (PaaS)

Question 22

a cloud service that provides access to even massive applications, such as Office 365

Answer 22

Software as a Service (SaaS)

Question 23

cloud model where a business builds their own internal cloud and owns it

Answer 23

private cloud

Question 24

cloud model where a private cloud is used by multiple organizations

Answer 24

community cloud

Question 25

technique in cloud modeling where a private cloud can grow into a public cloud during peak demand to avoid grinding to a halt

Answer 25

cloud bursting