What is Cloud Computing ? (Section 3)

Question 1

What are the problems associated with Traditional IT?

Answer 1

Costs, hardware upgrade costs and time, Limited Scaling, Hire support folks, monitor it 24x7, disaster recovery.

Question 2

What is cloud computing?

Answer 2

• On-demand delivery of compute power, DB Storage, applications and IT Resources.
• Pay-as-you-go pricing
• Provision exactly what you need, when you need it.
• Instant access to resources
• Simple method to access servers, storage, DB and app services

Question 3

3 Cloud Types

Answer 3

Private Cloud (Rackspace), Public Cloud (AWS, Azure) and Hybrid Cloud (Combo of Private and Public) to host an application.

Question 4

5 Characteristics of Cloud Computing

Answer 4

1. On Demand
2. Broad Network Access
3. Multi-Tenancy & Resource Pooling
4. Elasticity & Scalability
5. Measured Usage

Question 5

6 Advantages of Cloud Computing

Answer 5

1. Trade CapEx for OpEx (Don’t Own hardware)
2. Economies of Scale
3. Capacity unlimited and scalable
4. On-demand speed and agility
5. No money spend on running and maintaining data centers
6. Global access for workloads using AWS Global Infrastructure

Question 6

Problems Solved by the Cloud

Answer 6

1. Flexibility
2. Cost-effectiveness
3. Scalability
4. Elasticity
5. High Availability & Fault Tolerant by default
6. Agility and speed to market for business apps

Question 7

3 Types of Cloud Computing

Answer 7

1. IaaS - Building blocks (VMs, networks, storage, etc.) Ex: EC2
2. PaaS - Removes need to manage underlying infrastructure components.
3. SaaS - Complete product you just use.

Question 8

Cloud Computing Stacks

Answer 8

1. On premise - You manage everything
2. IaaS - You manage O/S North
3. PaaS - You manage apps and data only
4. SaaS - You only use the service (Ex: Gmail, Zoom, etc.)

Question 9

AWS has 3 pay-as-you-go pricing Fundamentals. What are they?

Answer 9

1. Compute
2. Storage
3. Data Egress

Question 10

AWS Global Infrastruture consists of these constructs.

Answer 10

1. Regions - Paris, Spain, Ohio, N. Virginia,
2. Availability Zones
3. Data Centers
4. Edge locations

Question 11

AWS Regions

Answer 11

1. Global Scope
2. Cluster of Data Centers
3. Most AWS Services are offered in multiple regions

Question 12

4. Factors in selecting to use an AWS Region

Answer 12

1. Compliance
2. Proximity to customers
3. Service availability in a region
4. Pricing varies from region to regions

Question 13

Availability Zones are :

Answer 13

1. Located within a region
2. Standalone Data Centers in that region with redundant power, networking and connectivity for disaster isolation.
3. Connected with high-bandwidth, low latency networking

Question 14

AWS Points of Presence (Edge Locations)

Answer 14

400+ PoPs for lower latency to customers

Question 15

Some AWS services do not require a region selection (T/F) ?

Answer 15

True. Route 53 and IAM are globally scoped services.

Question 16

AWS Shared Security Responsibility Model (3-14)

Answer 16

1. Customer is responsible of operation IN THE CLOUD.
2. AWS is responsible for security OF THE CLOUD.

Question 17

AWS Acceptable Use Policy (3-14)

Answer 17

1. No Illegal, harful, offensive use or content
2. No Security Violations
3. No Network Abuse
4. No email or other message abuse