Lesson 6 - Chapter 3: Cloud Computing

Question 1

The cloud encompasses not only file storage services but also what 2 things?

Answer 1

from simple interfaces to a vast array of on-demand computing resources (from Amazon, Microsoft, etc)

Question 2

What does IaaS stand for?

Answer 2

Infrastructure as a Service

Question 3

What is IaaS used for? (3)

Answer 3

IaaS providers use virtualization to:
1. minimize idle hardware
2. protect against data loss/downtime
3. respond to spikes in demand

Question 4

What’s an example of a IaaS provider?

Answer 4

Amazon Web Service (AWS)

(you can launch new virtual servers with that instead of purchasing your own expensive hardware)

Question 5

What’s one hitch of using IaaS (upkeep)?

Answer 5

You’re not responsible for the hardware but you do have to configure and maintain the operating system/software of any virtual machines you create

Question 6

What do you do if you want someone to handle the infrastructure, the OS, and everything else except your application?

Answer 6

Move up to Platform as a Service (PaaS)

Question 7

How are you billed?

Answer 7

By how much you use

(data storage, database servers, caching, media hosting, etc)

Question 8

Instead of starting a generic virtual machine in the cloud and installing database server software on it, what can you do instead?

Answer 8

use the Amazon Relational Database Service (RDS)

Question 9

Which of Amazon’s services lets you store as much as you can afford?

Answer 9

Amazon Simple Storage Service (S3)

Question 10

What does PaaS provide?

Answer 10

it gives programmers all the tools they need to deploy, administer, and maintain a web application (they just write the code)

Question 11

How do IaaS and PaaS work together?

Answer 11

PaaS providers use their own infrastructure or rent from a IaaS provider and builds a platform on top of that

Question 12

What’s the benefit of a tech/developer using PaaS?

Answer 12

it cuts down the time it takes for someone unfamiliar with the software/services they need to install/configure/integrate by enabling them to easily set up add-ons/configuration options

Question 13

What are the 3 layers of the Service cake? From top to bottom

Answer 13

1. Software as a Service (SaaS)
2. Platform as a Service (PaaS)
3. Infrastructure as a Service (IaaS)

Question 14

What does SaaS stand for?

Answer 14

Software as a Service

Question 15

What does the SaaS model provide?

Answer 15

provides access to an application wherever you have Internet connection (Netflix, Google Maps, etc)

Question 16

With SaaS you don’t have to worry about what 2 things?

Answer 16

1. Carrying data with you
2. Regularly updating software

Question 17

What’s a benefit of SaaS on the Enterprise level?

Answer 17

Makes it easier to budget and keep 1,000’s of PCs up to date

Question 18

What does a “Native app” mean?

Answer 18

a version of a web application service that you can access directly from a computer, phone, smart TV, etc without opening a browser using software (Spotify, Skype, Zoom, Bitwarden)

(need Internet access too)

Question 19

A cloud network can be described as being either what 4 things?

Answer 19

1. Public
2. Private
3. Community
4. Hybrid

Question 20

What is a public cloud?

Answer 20

describes software, platforms, and infrastructure delivered through networks that the general public can use

Question 21

What are the Public names of the xaaS varieties?

Answer 21

1. Public SaaS
2. Public PaaS
3. Public IaaS

Question 22

When would a business choose to build an internal cloud (private cloud)?

Answer 22

when it wants complete ownership of its data but wants some flexibility of the cloud and can afford both

Question 23

A security-focused company with enough resources could build an internal IaaS network where?

Answer 23

in an onsite data center

Question 24

How would a security-focused company use SaaS? 2 options

Answer 24

they would create and destroy VMs as needed, and develop SaaS to meet the planning, task, and time management needs of the company without sending data over the open Internet

(or contact a third party to maintain/host it)

Question 25

What is a community cloud?

Answer 25

a private cloud paid for and used by more than one organization

(military organizations working together)

Question 26

What is a hybrid cloud?

Answer 26

A combination of public, private, and community clouds

Question 27

What is cloud bursting?

Answer 27

an application can grow into a public cloud instead of grinding to a halt and integrates services between them

(if the private cloud isn’t maintained to be powerful enough to meet peak demand)

Question 28

Name 7 advantages of cloud computing

Answer 28

1. High availability servers - less downtime
2. Shared resources - physical hardware is virtualized
3. Rapid elasticity - easily expand servers with demand
4. On-Demand - the application adjusts depending on bandwidth demand
5. Resource Pooling - servers pooling the resources of physical servers
6. Measured and Metered Utilization
7. File Synchronization - cloud files auto-synced with local copies

Question 29

What’s the difference between measured and metered utilization?

Answer 29

measured = you’re charged based on the traffic to your app, or the time your virtual servers are running

metered = charged by the amount of processing resources used (CPU usage, etc) so you pay for what parts of the hardware you use

Question 30

What’s a benefit of using the SaaS Microsoft 365 when it comes to accessing apps?

Answer 30

you can access from any Internet-connected computing device because they’re not installed locally (and the service updates them for you!)

Question 31

What is virtual application streaming?

Answer 31

Accessing applications online without having to locally install them

Question 32

What is Microsoft 365’s cloud file storage service called?

Answer 32

SharePoint

(enables sharing files for groups easily for collaborative projects)