Chp 5: EC2 Fundamentals

Question 1

Types of storage for EC2 Instances

Answer 1

1. Network Attached (EBS + EFS)

2. Hardware (EC2 instance store)

Question 2

Is it possible to bootstrap instance using a user data script?

Answer 2

yes it is

Question 3

EC2 user data script can automate what types of tasks

Answer 3

1. installing software
2. installing updates
3. downloading common files

Question 4

EC2 User Data Script is run as which user?

Answer 4

root

Question 5

EC2 instance type

Answer 5

1. General Purpose
2. Compute optimized
3. Memory Optimized
4. Storage Optimized

Question 6

How many instances can a security group can be attached to?

Answer 6

multiple

Question 7

Security groups are locked down to what

Answer 7

Region/vpc combo

Question 8

Should SSH have its own security group?

Answer 8

yes

Question 9

When is it a security group related issue?

Answer 9

If the app is not accessible

Question 10

Describe the default traffic for security groups

Answer 10

all inbound traffic is blocked

all outbound traffic is authorized

Question 11

EC2 instance purchasing options

Answer 11

1. on demand
2. reserved
3. spot
4. dedicated host

Question 12

Describe an EC2 dedicated host

Answer 12

a physical server with EC2 instance capacity fully dedicated

Question 13

When is an EC2 dedicated host ideal

Answer 13

• licenses

- when compliance requirements are an issue

Question 14

What is the min time required for EC2 dedicated host?

Answer 14

3 year

Question 15

What are spot fleets?

Answer 15

a set of spot instances + (optional) on demand instances

will try to meet the target capacity with price constraints

Question 16

What are the strategies used to allocate spot instances?

Answer 16

• lowest price
• diversify
• capacity optimized