Module 2: Compute in the Cloud

Question 1

Amazon Elastic Compute Cloud (EC2)

Answer 1

Provides secure, resizable compute capacity in the cloud.

Question 2

General Purpose EC2 Instance

Answer 2

Provides a balance of compute, memory, and networking resources.
-Can be used for application servers, gaming servers, backend servers for enterprise applications, and small & medium databases.

Question 3

Compute Optimized EC2 Instance

Answer 3

Ideal for compute-bound applications that benefit from high-performance processes.
-Used for workloads such as web, application, and gaming servers.

Question 4

Memory Optimized EC2 Instance

Answer 4

Designed to deliver fast performance for workloads that process large datasets in memory.

Question 5

Accelerated Computing EC2 Instance

Answer 5

Use hardware accelerators, or compressors, to perform some functions more efficiently than is possible in software running on CPUs.

Question 6

Storage Optimized EC2 Instance

Answer 6

Designed for workloads that require high, sequential read and write access to large datasets on local storage.
-Used for distributed file systems, data warehousing applications, and high-frequency OLTP systems.

Question 7

On-Demand Instance EC2 Pricing

Answer 7

• Ideal for short-term, irregular workloads that cannot be interrupted.
• No upfront costs or minimum contracts.
• Pay for what you use.

Question 8

Savings Plans EC2 Pricing

Answer 8

• Allow for a reduce in compute costs by committing to a consistent amount of compute usage for a 1-3 year term.
• Savings of up to 72%.

Question 9

Reserved Instances EC2 Pricing

Answer 9

Billing discount applied to the use of On-Demand Instances.

Question 10

Spot Instances EC2 Pricing

Answer 10

• Unused Amazon EC2 computing capacity and offer up to 90% off On-Demand prices.
• Ideal for workloads with flexible start and end times.

Question 11

Dedicated Hosts

Answer 11

Physical servers with Amazon EC2 instance capacity that is fully dedicated to your use.

Question 12

Scalability

Answer 12

Involves beginning with only the resources you need and designing your architecture to automatically respond to changing demand by scaling out or in.
-You pay for only the resources you use.

Question 13

Amazon EC2 Auto Scaling

Answer 13

Enables you to automatically add or remove Amazon EC2 instances in response to changing application demand.

Question 14

Demand Scaling

Answer 14

Responds to changing demand.

Question 15

Predictive Scaling

Answer 15

Automatically schedules the right number of Amazon EC2 instances based on predicted demand.

Question 16

Minimum Capacity

Answer 16

The number of Amazon EC2 instances that launch immediately after you have created the Auto Scaling group.

Question 17

Elastic Load Balancing

Answer 17

• The AWS service that automatically distributes incoming application traffic across multiple resources.
• Distributes the workload across the multiple instances to that no single instance has to carry the bulk of it.

Question 18

Monolithic Application

Answer 18

• An application with tightly coupled components.

- If a single component fails, other components fail, and possibly the entire application fails.

Question 19

Microservices Approach

Answer 19

• Application components are loosely coupled.

- If a single component fails, the other components continue to work because they are communicating with each other.

Question 20

Amazon Simple Notification Service (Amazon SNS)

Answer 20

• A publish/subscribe service.

- A publisher publishes messages to subscribers.

Question 21

Amazon Simple Queue Service (Amazon SQS)

Answer 21

• A message queuing service.
• Messages can be sent, stored, and received between software components, without losing messages or requiring other services to be available.

Question 22

Serverless

Answer 22

The code runs on services but the servers do not need to be provisioned or managed.

Question 23

AWS Lambda

Answer 23

• A service that allows you to run code without needing to provision or manage servers.
• You only pay for the compute time that you consume.

Question 24

Containers

Answer 24

Provide a standard way to package the application’s code and dependencies into a single object.

Question 25

Amazon Elastic Container Service (Amazon ECS)

Answer 25

A highly scalable, high-performance container management system that enables you to run and scale containerized applications on AWS.

Question 26

Amazon Elastic Kubernetes Service (Amazon EKS)

Answer 26

A fully managed service that you can use to run Kubernetes on AWS.

Question 27

Kubernetes

Answer 27

Open source software that enables to deploy and manage containerized applications at scale.

Question 28

AWS Fargate

Answer 28

A serverless compute engine for containers.