Technology

Question 1

What is EC2?

Answer 1

service that allows you to rent and manage virtual servers in the cloud

not considered serverless

Question 2

How can you access EC2?

Answer 2

• AWS management console
• SSH
• EC2 instance Connect (EIC)
• AWS Systems manager via the web browser or shell

Question 3

Name the 5 different pricing models for EC2

Answer 3

Dedicated Hosts 
Reserved Instances 
On-Demand 
Plan - savings 
Spot

Question 4

On-demand pricing for EC2

Answer 4

• fixed price
• pay for what you use
• for unpredictable workloads that won’t run longer than a year

Question 5

Spot pricing for EC2

Answer 5

• Only if capacity is available
• workloads can be interrupted
• 90% off on-demand prices
• cheapest option

Question 6

Reserved Instance pricing for EC2

Answer 6

• reservation of instance type in a certain region for 1 or 3 years
• pay upfront to get discount 75% off on-demand
• for applications that require capacity reservation
• sign a contract

Question 7

Dedicated Hosts for EC2 pricing

Answer 7

• pay for physical server
• only for you
• bring your own server bound licenses like Microsoft or Oracle
• 70% off on-demand
• host is the physical server, instance runs on host

Question 8

Savings Plan for EC2

Answer 8

• commit to compute usage for 1 or 3 years
• lower bill across multiple compute services
• want flexibility
• no capacity or reservation

Question 9

What is Elastic Load Balancing

Answer 9

auto distributes your incoming application traffic across multiple EC2 instances

• think of it like a greeter directing a person to the next line.
• there are different types of load balances: classic, application, network, gateway