Cloud and the Datacenter

Question 1

Virtualization

Answer 1

Allows multiple virtual instances to exist on a single physical server

Question 2

Hypervisor

Answer 2

enables virtualization to occur and emulates the physical hardware

Question 3

Network Attached Storage (NAS)

Answer 3

Disk storage delivered as a service over TCP/IP

Question 4

Storage Area Network (SAN)

Answer 4

Specialized LAN that transfers data at block-level with a special protocol

Question 5

Fibre Channel

Answer 5

Special purpose hardware providing 1-16 Gbps of storage area network speed

Question 6

iscsi

Answer 6

lowers cost and relies on config that allows jumbo frames over your network

Question 7

Infiniband

Answer 7

Virtualized storage tech that uses a switched fabric topology

Question 8

Session Initiation Protocol (SIP)

Answer 8

Used to setup, maintain, and tear down calls

Question 9

PBX

Answer 9

Private Branch Exchange

Question 10

Virtual Private Branch Exchange

Answer 10

Outsources a telephone system by utilizing Voip to send all data to the provider and then connecting it to the telephone system

Question 11

Private Cloud

Answer 11

Systems and users only have access with other devies inside the same private cloud or system

Question 12

Public Cloud

Answer 12

Systems and users interact with devices on public networks, such as the internet and other clouds

Question 13

Hybrid Cloud

Answer 13

combination of private and public clouds

Question 14

Community Cloud

Answer 14

Collaborative effort where infrastructure is shared between several organizations; ex: you could make a cloud for banks shared by a bunch of banks

Question 15

Network As a Service (NaaS)

Answer 15

Allows for the outsourcing of a network to a service provider

Question 16

IaaS

Answer 16

Allows for the outsourcing of computers or equipment

Question 17

SaaS

Answer 17

user interface with a web-based application and the details of how it works

Question 18

Platform as a Service (PaaS)

Answer 18

Provides a platform for companies that develops applications without the need for infrastructure

Question 19

Desktop as a Service (DaaS)

Answer 19

Provides a desktop environment that is accessible through the internet in the form of a cloud desktop or virtual desktop environment

Question 20

Elasticity

Answer 20

Attempts to match the resources allocated with the actual amount of resources needed at any given point in time

Question 21

Scalability

Answer 21

Handles the growing workload required to maintain good performance and efficiency for a given software or application

Question 22

Horizontal Scaling

Answer 22

adding additional resources (like another server)

Question 23

Multitenancy

Answer 23

Allows customers to share computing resources in a public or private cloud

Question 24

Infrastructure as Code

Answer 24

Managing through scripting, etc.

Question 25

Orchestration

Answer 25

Process of arranging or coordinating the installation and configuration of multiple systems

Question 26

Private Direct Connection

Answer 26

Extends Preexisting, on-premise data center into the provider’s network to directly connect to your virtual private cloud network

Question 27

Three-tiered hierarcy

Answer 27

core - most expensive routers; at least two routers
distribution - access control lists/filters/policies
access/edge - beneath and connects to all endpoint devices

Question 28

Software Defined Network

Answer 28

Enables the network to be intelligently controlled through software

Question 29

Control Layer

Answer 29

Uses the info from the applications and decides how to route a data packet on the network

Question 30

Infrastructure Layer

Answer 30

contains the network devices that receive information about where to move the data and then perform those movements

Question 31

Management Plane

Answer 31

used to monitor traffic conditions and the status of the network

Question 32

Spine and Leaf Architecture

Answer 32

used specifically within the data center consists of spine, leaf, and servers

Question 33

North-South Traffic

Answer 33

Traffic that enters or leaves the data center from a system physically residing outside the data center (north is going outside the data center)

Question 34

East-West

Answer 34

Refers to data flow within a datacenter