EC2 101

Question 1

What is EC2?

Answer 1

Elastic Cloud Compute - Compute based service that has a server!

Reduces time required to obtain and boots servers in minutes allowing scale up and down.

Question 2

What is On Demand?

Answer 2

Allows you to pay a fixed rate by hour/second with no committment

Question 3

What is Reserved?

Answer 3

offers significant discounts on hourly charge with contracts of 1 to 3 year terms

Question 4

What is Spot?

Answer 4

Enables you to bid whatever price you want for instance capacity providing greater savings. flexible start and end times

Question 5

What is dedicated hosts?

Answer 5

Physical Ec2 server dedicated for use. Helps reduce costs by using your own hardware

Question 6

True /False

If Spot Instance is terminated by Amazon EC2, you will be charged for partial hour of usage vs terminating instance yourself.

Answer 6

False. You will not be charged if AWS cancels, if you cancel you will be charged.

Question 7

What is EBS?

Answer 7

Elastic Base Storage - a virtual disc in the cloud that virtual servers run off

Question 8

What are the two types of EBS Volume Types?

Answer 8

SSD and Magnetic

Question 9

What is General Purpose SSD?

Answer 9

Balances price and performance

Question 10

What is Provisioned IOPS SSD?

Answer 10

Highest performance for low latency and high throughput

Question 11

What is the Lowest cost volume of Magnetic?

Answer 11

Cold HDD (SC1)

Question 12

What do you use to connect EC2 that unlocks the public?

Answer 12

Private key

Question 13

What is a security group?

Answer 13

A virtual firewall in the cloud. You need to open ports in order to use them

Question 14

What is Lambda?

Answer 14

A compute service that is serverless

Question 15

True /False

You should always design for failure with security groups. Have one EC2 instance in each availability zone

Answer 15

True

Question 16

Security roles are more ______ , while secret access keys are easier to _______.

Answer 16

secure, manage

Question 17

When you apply roles to an EC2 instance, the change takes place when?

Answer 17

Immediately

Question 18

T/F

Roles are Universal. You do not need a specific region for them.

Answer 18

True

Question 19

What is an Elastic Load Balancer?

Answer 19

A load balancing service that automatically distributes incoming application traffic and scales resources to meet traffic demands.

Question 20

What are the 3 types of Elastic Load Balancers?

Answer 20

Application Load Balancers
Network Load Balancers
Classic Load Balancers

Question 21

Which Load balancer handles Static IP addresses and performance?

Answer 21

Network Load Balancer

Question 22

Which Load Balancer is the cheapest?

Answer 22

Classic Load Balancer

Question 23

Which ELB is Layer 7 aware and focuses on application

Answer 23

Application Load Balancer