Cloud Concepts

Question 1

What is cloud computing?

Answer 1

Cloud computing is on-demand delivery of compute, database, storage, applications and other IT resources through a cloud services platform via the internet with pay-as-you-go pricing

Question 2

What are the advantages of cloud computing? (6)

Answer 2

1 - trade capital expenses for variable expenses
2 - benefit from massive economies of scale
3 - stop guessing about capacity
4 - increase speed and agility
5 - stop spending money running and maintaining data centres
6 - go global in minutes

Question 3

What are the types of cloud computing?

Answer 3

IaaS - eg AWS EC2
PaaS - eg GoDaddy or elastic beanstalk, lightsail
SaaS - eg GMail

Question 4

What are the different types of cloud deployment?

Answer 4

Public
Hybrid
Private

Question 5

What are the main AWS global infrastructure services?

Answer 5

Compute, storage, databases
Security, identity and compliance
AWS cost management

Question 6

What is an AZ?

Answer 6

One or more discrete datacentres each with redundant power, networking, and connectivity housed in separate facilities

Question 7

What is a region?

Answer 7

A geographical location with 2 or more AZs

Question 8

What are edge locations?

Answer 8

Endpoints for AWS used for caching content. Typically CloudFront and CDN

Question 9

Why should you choose correct AWS region?

Answer 9

Data sovereignty laws
Latency to end users
AWS services

Question 10

What do you get free with AWS free tier?

Answer 10

5GB Amazon S3
750 hours EC2
750 Hours RDS

Question 11

What are the different support packages?

Answer 11

Basic
Developer - $29 month, scales based on useage
Business - 100$
Enterprise - 15000$ and TAM

Question 12

What IAM?

Answer 12

Identity and access management

Allows you to manage users and their level of access to the AWS console

Question 13

What are the key features of IAM?

Answer 13

Centralised control of your AWS account
Shared access to AWS account
Granular permissions
Multi-factor authentication
Ability to provide temporary access for users, devices and services where necessary
A customisable password rotation policy
Integration with many AWS services

Question 14

What are users?

Answer 14

End users - people, employees of an organisation

Question 15

What are groups?

Answer 15

Collection of users - each inherit the permissions of the group

Question 16

What are roles?

Answer 16

Assign them to AWS resources

Question 17

What are policies?

Answer 17

Made up of documents, in JSON format, provide permissions for users, groups, and roles
Key-value pair

Question 18

How can the AWS platform be accessed?

Answer 18

Console
Programatically/CLI
SDK

Question 19

What is the root account?

Answer 19

The email address you used to set up account

Question 20

What are IAM credentials report?

Answer 20

Lists all users in account - passwords, access keys and MFA

Question 21

What are the AWS Cloud best practises to minimise deployment risks?

Answer 21

Plan for failure
Decouple your components
Think parallel - multipart uploads
Implement elasticity

Question 22

What are the pillars of the AWS well-architected framework?

Answer 22

Operational excellence
Security
Reliability
Performance efficiency
Cost optimisation

Question 23

What are the core principles of AWS?

Answer 23

Scalability
Disposable resources
Automation
Loose coupling
Services not servers
Databases
Managing increasing volumes of data
Removing single points of failure
Optimise cost
Caching
Security