Section 12: Cloud and the Datacenter

Question 1

What is a Hypervisor?

Answer 1

Specialized software that enables virtualization to occur

Question 2

What is a Network Attached Storage (NAS)?

Answer 2

Disk storage is delivered as a service over TCP/IP

Question 3

What is a Storage Area Network (SAN)?

Answer 3

Specialized LAN designed for data transfer/storage

Question 4

What is a Fibre Channel (FC)?

Answer 4

Special purpose hardware providing 1-16 Gbps

Question 5

What is a Fibre Channel over Ethernet (FCoE)?

Answer 5

Removes the need for specialized hardware

Question 6

What is the IP Small Computer System Interface (iSCSI)?

Answer 6

Relies on configuration allowing jumbo frames over the network. Built using Ethernet switches (<10 Gbps)

Question 7

What is Software Defined Networking (SDN)?

Answer 7

Provides the administrator with an easy-to-use front end to configure physical and virtual devices throughout the network

Question 8

What is Voice over IP (VoIP)?

Answer 8

Digitizes voice traffic so that it can be treated like other data on the network.

Question 9

What is a Private Cloud?

Answer 9

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

Question 10

What is a Public Cloud?

Answer 10

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

Question 11

What is a Hybrid Cloud?

Answer 11

Combination of private and public

Question 12

What is a Community Cloud?

Answer 12

Collaborative effort where infrastructure is shared between several organizations from a specific community with common concerns

Question 13

What is Infrastructure as a Service (IaaS)?

Answer 13

Allows outsourcing of the infrastructure of the servers or desktops to a service provider

Question 14

What is Software as a Service (SaaS)?

Answer 14

User interacts with a web-based application

Question 15

What is Platform as a Service (PaaS)?

Answer 15

Provides a development platform for companies that are developing applications without the need for infrastructure.

Question 16

What is Desktop as a Service (DaaS)?

Answer 16

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

Question 17

What is Elasticity?

Answer 17

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

Question 18

What is Scalability?

Answer 18

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

Question 19

What is Multitenancy?

Answer 19

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

Question 20

What is Infrastructure as Code (IAC)?

Answer 20

Enables managing and provisioning of infrastructure through code instead of through manual processes

Question 21

What is Orchestration?

Answer 21

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

Question 22

What is Automation?

Answer 22

Relying on computer script and can be used over and over again without mistakes

Question 23

What is a Virtual Private Network (VPN)?

Answer 23

Establishes a secure connection between on-premises network, remote offices, client devices, and provider’s global network

Question 24

What is a Private-Direct Connection?

Answer 24

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

Question 25

What is a **Data Center**?

Answer 25

Any facility that businesses and other organizations use to organize, process, store, and disseminate large amount of data

Question 26

What is the **Core** of the **Three-Tiered Hierarchy**?

Answer 26

Consist of the biggest and fastest and most expensive routers. | Considered the backbone

Question 27

What is the **Distribution/Aggregation Layer** of the **Three-Tiered Hierarchy**?

Answer 27

Provide boundary definition by implementing access control lists and filters | Layer 3 switches would be used

Question 28

What is the **Access/Edge** of the **Three-Tiered Hierarchy**?

Answer 28

Used to ensure packets are being converted to frames and delivered to the correct end point devices when needed | Use regular switches

Question 29

What is the **Application Layer** of the **SDN**?

Answer 29

Focuses on the communication resource requests or information about the network as a whole

Question 30

What is the **Control Layer** of the **SDN**?

Answer 30

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

Question 31

What is the **Infrastructure Layer** of the **SDN**?

Answer 31

Contains the network devices that receive information about where to move the data and then performs those movements

Question 32

What is a **Management Plane**?

Answer 32

Used to monitor traffic conditions and the status of the network

Question 33

What is a **Spine and Leaf Architecture**?

Answer 33

An alternative type of network architecture that focuses on the communication within the data center itself

Question 34

What is **East-West**?

Answer 34

Refers to data flow within a data center

Question 35

What is **North-South**?

Answer 35

Traffic that enters or leaves the data center from a system physically residing outside the data center

Question 36

What is a **Co-located Data Center**?

Answer 36

A data center environment owned by another company

Question 37

What is an **On-Premise Data Center**?

Answer 37

A traditional, private data infrastructure usually located in the same building as the main offices

Question 38

What is a **Cloud-Based Data Center**?

Answer 38

Migrating company data out of own server and data centers and into a cloud service provider's servers and data centers