Amazon EC2

Question 1

What are the Amazon EC2 Instance Families

Answer 1

• General Purpose
• Compute Optimized
• Memory Optimized
• Accelerated Computing
• Storage Optimized

Question 2

What is a General Purpose Instance?

Answer 2

Provide balance of compute, memory, & networking resources.

Question 3

What can you use General Purpose instances for?

Answer 3

• Application servers
• Gaming servers
• Backend servers for Enterprise Applications
• Small & Medium databases

Question 4

Suppose that you have an application in which the resource needs for compute, memory, and networking are roughly equivalent.
What EC2 Instance Type would you use?

Answer 4

General Purpose

Question 5

What is a Compute Optimized Instance?

Answer 5

Instances for compute-bound applications that need high-performance instances.

Question 7

What is a Memory Optimized Instance?

Answer 7

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

Question 8

Suppose that you have a workload that requires large amounts of data to be preloaded before running an application. This scenario might be a high-performance database or a workload that involves performing real-time processing of a large amount of unstructured data.
What EC2 Instance Type would you use?

Answer 8

Memory Optimized

Question 9

What are Accelerated Computing Instances?

Answer 9

Instances that use hardware accelerators, or coprocessors to perform some functions more efficiently that is possible in software running on CPU’s.

Question 10

What are Storage Optimized Instances?

Answer 10

Instances that are used for high read/write access to large datasets on local storage.

Question 11

What are examples of workloads that would use Storage Optimized Instances?

Answer 11

• file systems
• data warehousing applications
• high-frequency online transaction processing (OLTP) systems.

Question 12

What are the Amazon EC2 Pricing Types?

Answer 12

• On-Demand
• Savings Plan
• Reserved Instances
• Spot Instances
• Dedicated Hosts

Question 13

What are On-Demand Instances?

Answer 13

• Ideal for short-term, irregular workloads that cannot be interrupted.
• No upfront costs or minimum contracts
• Run continuously until you stop them.
• Pay for only the compute time that you use.

Question 14

Suppose you want to develop and test applications or run applications that have unpredictable usage patterns.

Answer 14

On-Demand Instances

Question 15

What are Reserved Instances?

Answer 15

• Billing discount offered when organizations reserve capacity in an AWS service.
• The discount is applied to the use of on-demand instances in the AWS customer’s account.
• Good when you have a predictable instance.

Question 16

Suppose you know the EC2 instance type and size you need for your steady-state applications and in which AWS Region you plan to run them.

Answer 16

Standard Reserve Instance

Question 17

Suppose you need to run your EC2 instances in different Availability Zones or different instance types.

Answer 17

Convertible Reserve Instance

Question 18

What is the Savings Plan

Answer 18

Offers discounted rates on EC2 instances in exchange for commitment to use specific instance family in region for set time period.

Question 19

What is a Spot Instance?

Answer 19

• Use unused Amazon EC2 computing capacity but can be interrupted.

Question 20

Suppose you have an instance that has a flexible start and end times and can have interruptions.
What type of instance would you use?

Answer 20

Spot Instances

Question 21

What are Dedicated Hosts?

Answer 21

Physical servers with an Amazon EC2 instance that are fully dedicated for your use.

Question 22

Which EC2 service allows you to automatically add or remove EC2 instances in response to changing application demand?

Answer 22

AWS EC2 Auto Scaling