Foundations Of Cloud Computing

Question 1

The six advantages of cloud computing

Answer 1

1. Go global in minutes
2. Economies of scale
3. No managing hardware
4. Speed and agility
5. Capacity is matched to your demand
   6. Trade capital expense for variable expense

Question 2

The three cloud computing models

Answer 2

Infrastructure as a service, platform as a service, and software as a service.

Question 3

What is infrastructure as a service

Answer 3

Fundamental building blocks that can be rented.
Example: EC2 instances

Question 4

What is platform as a service

Answer 4

Cloud-based environment typically used by developers to build and deliver applications without worrying about the underlying infrastructure.
Example: salesforce

Question 5

What is software as a service

Answer 5

A complete product that is run and managed by the service or software provider. Example: email provider

Question 6

The three cloud computing deployment models

Answer 6

Cloud, hybrid, and on-premises

Question 7

Availability zones

Answer 7

An availability zone is one or more physically separated or isolated data centers. It contains a service that you’re renting and it’s where you provision your resources and deploy your application. There can be multiple availability zones in one region, and multiple data centers in one availability zone.
Each availability zone is isolated, but the availability zones in a region are connected through low latency links.
Multi AZ deployments provide high-availability.

Question 8

What are the seven categories of services offered by AWS computing?

Answer 8

Compute, networking, storage, analytics, database, security, development

Question 9

Virtual machines

Answer 9

Virtualization let’s you divide hardware resources on a single physical server into smaller units. The smaller units are called virtual machines. Each VM is its own little server.

Question 10

What are the benefits of cloud computing

Answer 10

High-availability, elasticity, agility, and durability. 

Question 11

Regions are source and service specific, which means that not every region will have the same resources.

Answer 11

A region is a collection of availability zones. You should set up resources in regions closest to your users.

Question 12

Edge locations

Answer 12

Mini data centers that are used to cache your content, made possible through cloudFront. There are more edge locations than availability zones and regions. They are created to reduce latency.

Question 13

AWS management console

Answer 13

The most popular way to interact with your AWS resources. Allows you to access your AWS accounts and manage applications running in your account from a web browser. 

Question 14

Root user

Answer 14

Do user that was also other users using the email used to create the AWS account. The only users I can delete all the other users in the whole account. Protect the root user with MFA. It’s best not to use it for day-to-day tasks.

Question 15

AWS command line interface (CLI)

Answer 15

A way to interact with your AWS resources by sending commands that trigger APIs from a terminal session in your laptop. Allows for programmatic access. It has all of the features that exist in the AWS management consult, but new features are available here first.