Domain 3: Technology - Compute

Question 1

What are the available EC2 instance types (billing)?

Answer 1

On Demand

Reserved (1-3 years)

Spot (Bid based)

Dedicated Hosts

Question 2

What are the typical use cases for EC2 On Demand Instances?

Answer 2

Fixed rate by the hour or second

No upfront payments

No long term committment

Short term, spiky or unpredictable workloads

POC testing applications

Question 3

What are the typical use cases for EC2 Reserved Instances?

Answer 3

Apps with steady state or predictable usage

Reduced costs from down payment

Need for a (Scheduled RI) for a monthly sale

Question 4

What are the types of Reserved Instances?

Answer 4

Standard

Convertible (equal or greater value)

Scheduled (recurring)

Question 5

What are the use cases for Spot Instances?

Answer 5

Apps with flexible start and end times

Apps only feasible at low costs

Urgent need for large additional compute

Question 6

What are the use cases for Dedicated Host EC2 instances?

Answer 6

Situations where regulations disallow multi-tenant virtualization

3rd Party Licensing Needed

Question 7

What are the instance family types?

Answer 7

F - FPGA
I - IOPS
G - Graphics
H - High Disk Throughput
T - General Purpose (T2 Micro)
D - Density
R - RAM
M - Main Choice for general purpose
C - Compute
P - Graphics (think Pics)
X - Extreme Memory