Technology - Compute Services

Question 1

What is Elastic Cloud Compute? (EC2)

Answer 1

EC2- Allows you to rent and manage virtual servers (called Instances) in the cloud that can grow and shrink based on demand (Elastic)

EC2 Instances are virtual servers running on a physical server.

Virtual Servers in the cloud - Compute Power

Question 2

True or False: EC2 Instances are considered serverless.

Answer 2

False - EC2 instances run as virtual servers on a PHYSICAL server.

Question 3

When would you want to deploy an EC2 in the Real World?

Answer 3

1. To Deploy a Database -
2. Deploy a Web Server for Web Applications
   3.

Question 4

Name TWO ways to access an EC2 instance:

Answer 4

1. AWS Management Console (In A Web Browser)
2. SSH (most common, requires a key pairing first)
3. EC2 Instance Connect (EIC)
4. AWS Systems Manager

Question 5

Describe the EC2 “on-demand” pricing option

Answer 5

Pay for only what you use on-demand down to the second.

Question 6

Describe the EC2 “spot” pricing option

Answer 6

The cheapest option - Allows instances only on unused capacity across the Region. Used when the start/stop time of the application is not an issue. You pay the “spot” price at the begining of each hour.

Question 7

Describe “Reserved Instances” pricing option

Answer 7

Allows you to commit to a specific instance type in a particular region for 1 or 3 years. Must sign a contract.

Can save up to 75% off On-Demand Prices.

Question 8

What are “Dedicated Hosts”?

Answer 8

Paying for a physical server that is ONLY yours.

Question 9

When would you use a Savings Plan model in AWS

Answer 9

When you want to lower your bill across computer services

When flexibility across regions

Question 10

What is Elastic Load Balancing?

Answer 10

Automatically distributes your incoming application traffic across multiple EC2 instances.

Types include: Classic, Application, Gateway, and Network

Question 11

What is EC2 Auto-Scaling?

Answer 11

Adds or replaced EC2 instances automatically across Availability Zones based on need and changing demand (Horizontal Scaling)

It reduces the impact of system failures and improves the availability of applications.

Question 12

What is AWS Lambda?

Answer 12

AWS Lambda is a serverless compute service that lets you run code without managing servers and scales automatically.

Code functions using many popular languages

Question 13

What are some business-use cases for AWS Lambda?

Answer 13

1. Real-Time File Processing
2. Sending Email Notification
3. Backend Business Logic

Question 14

What are some features of AWS Lambda?

Answer 14

1. Supports popular programming languages (Java, Go, PowerShell, Node.js, C#, Python, & Ruby)
2. Lambda can execute your code in response to events
3. Lambda functions have a 15-minute time out.

Question 15

What is the pricing model for Lambda?

Answer 15

1. Compute time
2. Request count
3. Always free (1 million free lambda call requests each month)

Question 16

What is AWS Fargate?

Answer 16

AWS Fargate is a serverless compute engine for containers that scales automatically

Allow you to manage containers like Docker

Question 17

What is AWS Lightsail

Answer 17

AWS Lightsail allows you to quickly launch all the resources you need for small projects.

Includes a virtual machine, SSD storage, data transfer, DNS management, and a static IP address

Question 18

What is AWS Outposts?

Answer 18

AWS Outpost allow you to run cloud services in your own internal data center and is used for Hybrid architecture cloud structures.

AWS delivers and installs servers in your internal data center