Module 2. Compute in the Cloud

Question 1

Describe the benefits of EC2

Answer 1

1. Flexible
2. Cost Effective
3. Quick

Question 2

Name the different EC2 Instance Types

Answer 2

1. General Purpose Instance
2. Compute Optimized Instance
3. Memory Optimized Instance
4. Accelerated Computing Instances
5. Storage Optimized

Question 3

Describe General Purpose Instances

Answer 3

Balance of compute, memory and networking resources. Best if memory, compute and networking requirements are roughly equal. Can be used for:

• Application Servers
• Gaming Servers
• Backend Servers for enterprise applications
• Small and medium size databases,

Question 4

Describe Compute Optimized Instances

Answer 4

• Ideal for high-performance web servers, compute intensive app servers and dedicated gaming servers.
• Can also be used for batch processing

Question 5

Describe Memory Optimized Instances

Answer 5

• Designed to deliver fast performance for workloads that process large datasets in memory.
• Best for high-performance database or a workload that involves performing real-time processing of a large amount of unstructured data.

Question 6

Describe Accelerated Computing Instances

Answer 6

• Use hardware accelerators, or co-processors, to perform some functions more efficiently than is possible in software running on CPUs.
• Examples include floating-point number calculations, graphics processing, and data pattern matching.
• Use case: graphics applications, game streaming, and application streaming.

Question 7

Describe Storage Optimized Instances

Answer 7

• Designed for workloads that require high, sequential read and write access to large datasets on local storage.
• Examples: distributed file systems, data warehousing applications, and high-frequency online transaction processing (OLTP) systems.
• Measured in IOPS/Sec
• Designed to deliver tens of thousands of low-latency, random IOPS to applications.

Question 8

Name EC2 Pricing Options

Answer 8

1. On Demand
2. EC2 Savings
3. Reserved Instances
4. Spot Instances
5. Dedicated Hosts.

Question 9

Describe On-Demand Pricing

Answer 9

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

Question 10

Describe ECT Savings Plans

Answer 10

• Enable you to reduce your compute costs by committing to a consistent amount of compute usage for a 1-year or 3-year term.
• Instances that receive a consistent compute usage over a 1-year or 3-year term
• This term commitment results in savings of up to 66% over On-Demand costs.

Question 11

Describe Reserve Instance Pricing

Answer 11

• Billing discount applied to the use of On-Demand Instances in your account.

Question 12

Describe Spot Instance Pricing

Answer 12

• Ideal for workloads with flexible start and end times, or that can withstand interruptions.
• Spot Instances use unused Amazon EC2 computing capacity and offer you cost savings at up to 90% off of On-Demand prices.
• • Unavailable capacity might delay the launch of your background processing job or it may be interrupted.

Question 13

Describe Dedicated Host Instance pricing.

Answer 13

• Physical servers with Amazon EC2 instance capacity that is fully dedicated to your use.
• Dedicated Hosts are the most expensive pricing plan for EC2