EC2 - Elastic Compute Cloud

Question 1

EC2 Instance

What makes up an EC2 Instance?

Answer 1

AMI (Amazon Machine Image) OS + Instance Size (CPU + RAM) + Storage + security groups + EC2 User Data

Question 2

Firewall attached to the EC2 instance

• Security Groups
• EC2 User Data
• SSH
• Spot Instances

Answer 2

Security Groups

Question 3

Script launched at the first start of an EC2 instance

• The Customer
• EC2 User Data
• Spot Instances
• SSH

Answer 3

EC2 User Data

Question 4

Start a terminal and connect into our EC2 instances on port 22

• EC2 Instance Roles
• Connect Instances
• SSH
• Security Groups

What protocol do you use?

Answer 4

SSH

Question 5

link’s to IAM roles

• SSH
• Security Groups
• EC2 Instance Roles
• Connect Instances

Answer 5

EC2 Instance Roles

Question 6

Which EC2 Purchasing option can provide the biggest discount, but is not suitable for critical jobs or databases?

• Reserved Instances
• Convertible Instances
• Dedicated Hosts
• Spot Instances

Answer 6

Spot Instances

NOTE: Spot instances are good for short workloads, but are less reliable

Question 7

Which network security tool can you use to control traffic in and out of EC2 Instances?

• Network Access Control List (NACL)
• Identity and Management Access (IAM)
• GuardDuty
• Security Groups

Answer 7

Security Groups

NOTE: Security Groups operate at instance level and can control traffic

Question 8

Under the Shared Responsibility Model, who is responsible for operating-system patches and updates on EC2 Instances?

• The customer
• AWS
• Both AWS and the Customer

Answer 8

The Customer

NOTE: The customer is responsible for operating-system patches and updates on EC2 Instances, as well as data security on the instances, Security Groups rules, etc.

Question 9

How long can you reserve an EC2 Reserved Instance?

• 1 or 3 years
• 2 or 4 years
• 6 months or 1 year
• Anytime between 1 and 3 years

Answer 9

1 or 3 years

Question 10

A company would like to deploy a high-performance computing (HPC) application on EC2. Which EC2 instance type should it choose?

• Compute Optimized
• Storage Optimized
• Memory Optimized
• General Purpose

Answer 10

Compute Optimized

NOTE: Compute Optimized EC2 instances are great for compute-intensive workloads requiring high performance processors, such as batch processing, media transcoding, high performance web servers, high performance computing, scientific modeling & machine learning, and dedicated gaming servers.

Question 11

Which of the following is NOT an EC2 Instance Purchasing Option?

• Spot Instances
• Reserved Instances
• On-demand Instances
• Connect Instances

Answer 11

Connect Instances

Question 12

Which EC2 Purchasing Option should you use for an application you plan on running on a server continuously for 1 year?

• Reserved Instances
• Spot Instances
• On-demand Instances
• Convertible Instances

Answer 12

Reserved Instances

NOTE: Reserved Instances are good for long workloads. You can reserve instances for 1 or 3 years