QUESTIONS AND CORRECT ANSWERS
Dedicated Server - CORRECT ANSWER One physical machine dedicated to a single business.
Runs a single web app/site.
$$$/High Maintenance/High Security
Virtual Private Server - CORRECT ANSWER One physical machine dedicated to a single
business.
Virtualized into sub-machines.
Runs multiple web apps/sites.
Shared Hosting - CORRECT ANSWER One physical machine shared by multiple businesses.
Relies on most tenants to under utilize their resources.
$ Very Cheap/Very Limited
Cloud Hosting - CORRECT ANSWER Multiple physical machines that act as one.
The system is abstracted into multiple cloud services.
Flexible/Scalable/Secure/Cost-Effective/High Configurability
IaaS Cloud Services - CORRECT ANSWER Compute ex. VM
Storage ex. Virtual HD
Networking ex. Virtual network
Databases ex Virtual databases for storing data
Cloud Service Types - CORRECT ANSWER IaaS - for admins
PaaS - for developers
SaaS - for customers
Microsoft - CORRECT ANSWER An American multinational computer technology
corporation headquartered in Redmond, WA.
, Azure - CORRECT ANSWER Microsoft's cloud service provider
Cloud Computing Benefits - CORRECT ANSWER Cost Effective- no up-front costs,
PAYG(pay-as-you-go)
Global
Secure- provider handles physical security, services secure by default
Reliable-data backup, disaster recovery, data replication
Scalable- increase/decrease resources and services
Elastic- automatic scaling of resources and services
Current- underlying hardware/software is managed/patched/replaced by cloud provider
Public Cloud - CORRECT ANSWER Everything built on the cloud provider.
Private Cloud - CORRECT ANSWER On-Premises or OpenStack
Everything built on company's datacenters.
Hybrid Cloud - CORRECT ANSWER Uses both Public(cloud service provider) and
Private(on-premises)
Cross Cloud - CORRECT ANSWER Uses multiple cloud providers.
aka multi-cloud/hybrid-cloud
CAPEX - CORRECT ANSWER Capita; Expenditure
Spending money up front on physical infrastructure which is later deducted from the tax bill over
time.
This # is an informed guess.
OPEX - CORRECT ANSWER Operational Expenditure
The cost associated with switching an on-premises datacenter to the service provider.
Customer is only concerned with non-physical costs.