Cloud and the Datacenter

Question 1

Virtual Servers

Answer 1

Allows multiple virtual instances to exist on a single physical server
cheaper, consolidate physical servers
Multiple NICs increase bandwidth

Question 2

Hypervisor

Answer 2

Specialized software that emulates physical hardware

VMWare, Microsoft Hyper-V, Virtual Box

Question 3

Virtualized Storage Solutions

Answer 3

(NAS) - Network Attached Storage: disk storage over TCP/IP

(SAN) - Storage Area Network: Specialized LAN designed for data transfer

Question 4

storage area network (san) connection types

Answer 4

Fibre Channel
Fibre Channel over Ethernet (FCoE)
iSCSI (IP Small Computer System Interface)

Question 5

Virtual Switches

Answer 5

Overcomes the problem of all virtual servers being on one broadcast domain
Layer 2 control provides VLANs and trunking

Question 6

Virtual Desktop and pros?

Answer 6

User’s desktop computer is run in browser

Easier to secure and upgrade for the admins

Question 7

Private Cloud

Answer 7

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

Question 8

Public Cloud

Answer 8

Systems and users interact with devices on public networks, such
as the Internet and other clouds
ex: google drive

Question 9

Hybrid Cloud

Answer 9

Combination of private and public

Question 10

Community Cloud

Answer 10

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

Question 11

(IaaS)

Answer 11

Infrastructure as a Service
Allows outsourcing of the infrastructure of the servers or desktops to a
service provider
Hosted off-site at the service provider’s data center and the customer is
billed for usage
AWS, Azure

Question 12

(SaaS)

Answer 12

Software as a Service
User interacts with a web-based application
Details of how it works are hidden from users
google docs, office 365

Question 13

(PaaS)

Answer 13

Platform as a Service
Provides a development platform for companies that are developing
applications without the need for infrastructure
OpenShift, Apprenda

Question 14

(DaaS)

Answer 14

Desktop as a Service
Provides a desktop environment that is accessible through the Internet in
the form of a cloud desktop or virtual desktop environment
Virtual Desktop Infrastructure (VDI)

Question 15

Elasticity

Answer 15

match the resources allocated with the actual amount of
resources needed at any given point in time
meeting the sudden increases and decreases
in the workload
dynamic, Short-term addition or subtraction of resources

Question 16

Scalability

Answer 16

Handles the growing workload required to maintain good performance
and efficiency for a given software or application
Long-term planning and adoption

Question 17

Vertical Scaling

Answer 17

(Scaling Up)
Increasing the power of the existing resources in the working
environment

Question 18

Horizontal Scaling

Answer 18

(Scaling Out)
Elasticity
Adding additional resources to help handle the extra load
more redundancy and less downtime

Question 19

Multitenancy

Answer 19

Allowing customers to share computing resources in a public or private
cloud
Better storage/access, resources, cost
More security risk

Question 20

Virtual Machine (VM) Escape

Answer 20

Occurs when an attacker breaks out of one of the isolated VMs and
begins to directly interact with the underlying hypervisor

Question 21

(IAC)

Answer 21

Infrastructure as Code
Enables managing and provisioning of infrastructure through code instead of
through manual processes
Scripted automation and orchestration

Question 22

Automation/Orchestration

Answer 22

Process of coordinating the installation and
configuration of multiple systems
Lower costs, Speed up deployments, Increase security

Question 23

Snowflake Systems

Answer 23

Any system that is different from the standard configuration template used with IAC

Question 24

(VPN)

Answer 24

Virtual Private Network
cloud connection option
cheaper than private-direct
aws, azure

Question 25

Private-Direct Connection

Answer 25

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

Question 26

data center

Answer 26

facility that organizes, processes, stores and disseminates amounts of data

Question 27

Three-tiered hierarchy

Answer 27

core: fastest, backbone, redundant distribution/aggregation layer: policies, layer 3 switches access/edge: connect to end points

Question 28

sdn

Answer 28

``` software-defined networking admins can control networks via software 1. application layer 2. control layer 3. infrastructure layer 4. management plane ```

Question 29

spine and leaf

Answer 29

spine: switches that create full mesh with leaves leaf: access switches increased speed, decreased latency compared to 3-tiered

Question 30

traffic flow

Answer 30

north-south: exit-entering data center | east-west: data flow within data center

Question 31

on premise

Answer 31

traditional, usually inside building

Question 32

co-located

Answer 32

rent space in data center

Question 33

cloud based

Answer 33

migrate data to csp facilities