What is Cloud Computing? Flashcards
What is a server composed of?
- Compute: CPU
- Memory: RAM
- Storage: Data
- Database: Store Data in a structured way
- Network: Routers, switch, DNS server
Cables, routers, and servers connected with each other make up a __________.
Network
A networking device that forwards data packets between computer networks. They know where to send your packets on the internet.
Router
Takes a packet and sends it to the correct server / client on your network.
Switch
What are the drawbacks of traditional infrastructure? Or an on-premises datacenter?
- Typically involves a data center and lots of servers
- Very expensive because you need to pay for:
- Rent
- Power supply, cooling, maintenance
- Adding or replacing hardware
- Drawbacks include:
- Scaling
- 24/7 team to monitor infrastructure
- How to deal with disasters?
What is cloud computing?
Cloud computing is the on demand delivery of compute power, database storage, applications, and other IT resources.
What are the three types of Cloud Deployment Models?
Private, Public, and Hybrid
What are the Five Characteristics of Cloud Computing?
- On-demand self service
- Broad network access
- Multi-tenancy and resource pooling
- Rapid elasticity and scalability
- Measured Service
What are the Six Advantages of Cloud Computing?
- Trade capital expense (CAPEX) for operational expense (OPEX)
- Benefit from massive economies of scale
- Stop guessing capacity
- Increased speed and agility
- Stop spending money running and maintaining data centers
- Global in minutes leveraging AWS infrastructure
What is it called to be able to rapidly develop, test and launch software applications?
Agility
The ability to scale out and scale in when needed is called ___________.
Elasticity
Changing resource types when needed is __________.
Flexibility
Cost-effectiveness in the cloud is achieved by a ____________ model.
Pay-as-you-go
Accommodating larger loads by making hardware stronger or adding additional loads is called ___________.
Scalability
High availability and fault-tolerance is achieved by
Having infrastructures built across many data centers
What are the three primary types of cloud computing?
- Infrastructure as a service (IaaS)
- Platform as a service (PaaS)
- Software as a service (SaaS)
How are the responsibilities shared in the IaaS cloud computing model?
- Customer Responsibility
- Applications, Data, Runtime, Middleware, O/S
- Provider Responsibility
- Virtualization, Servers, Storage, Networking
How are the responsibilities shared in the PaaS cloud computing model?
- Customer Responsibility
- Applications, Data
- Provider Responsibility
- Virtualization, Servers, Storage, Networking, Runtime, Middleware, O/S
How are the responsibilities shared in the SaaS cloud computing model?
The provider is responsible for everything.
What is an AWS example of IaaS?
Amazon EC2
What is an AWS example of PaaS?
Elastic Beanstalk
What are the three pricing fundamentals of AWS?
- Compute:
- Pay for compute time
- Storage
- Pay for data stored in the cloud
- Data transfer OUT of the cloud
- Data transfer IN is free
What is an AWS region?
A region is a cluster of data centers.
How do you choose an AWS region?
- Compliance with data governance and legal requirements: data never leaves a region without your explicit permission
- Proximity to customers: reduced latency
- Available services within a Region: new services and new features aren’t available in every Region
- Pricing: pricing varies region to region and is transparent in the service pricing page
