4.1 Summarize cloud-computing concepts.

Question 1

Cloud environment that a company hosts itself. Provides most control over the safety of your data but requires staff and knowledge to deploy and manage solution.

Answer 1

Private cloud

Question 2

Cloud environment available to everyone on the internet. Data is in the hands of a third party, but that party is more knowledgeable and prepared to protect that data.

Answer 2

Public cloud

Question 3

Combination of public and private cloud. Company may keep some data in public but more sensitive data in private.

Answer 3

Hybrid cloud

Question 4

Cloud that is shared by multiple organizations for a common purpose. Such as to share data for a joint project.

Answer 4

Community cloud

Question 5

Vendor provides the hardware platform, and the company installs and manages its own operating systems and application system. The vendor system provides access to the datacenter and maintains that access

Answer 5

Infrastructure as a service (IaaS)

Question 6

On-demand software
–No local installation
–Why manage your own email distribution?
Or payroll?
Central management of data and applications
–Your data is out there
A complete application offering
–No development work required
–Google Mail, Microsoft 365

Answer 6

Software as a service (SaaS)

Question 7

Vendor provides the hardware platform or data center and the software running on the platform. Includes operating system and infrastructure software. Customer still involved in managing system.

Answer 7

Platform as a service (PaaS)

Question 8

Describe characteristics of shared resources.

Answer 8

Technicians can appropriate these resources in whichever relative percentage that are comfortable.

Internal cloud
–No resources are shared
–Build your own cloud
–Pay for everything up front
–No ongoing costs
External cloud
–Share resources with a public cloud
–Underlying infrastructure owned by a third-party
–Cost may be metered or up-front

Question 9

Describe metered utilization.

Answer 9

You pay for what you use
–Cost to upload
–Cost to store
–Cost to download

Question 10

Describe Rapid elasticity

Answer 10

Scale up and scale down as needed
–Seamless to everyone
–The cloud enables instant resource provisioning

Question 11

Describe high availability

Answer 11

Systems are always available
–Redundancy provides availability

Question 12

Describe File synchronization

Answer 12

Information can be duplicated across cloud locations. Application allows you to keep the files in the cloud synchronized with the files as they exist in local storage. Allows you to recover from accidental edits and deletions.

Question 13

When hosted on site there two approaches to this infrastructure. Centralized- All desktop instances are stored in a single server requiring significant processing power on the server. Remote virtual desktops- Image is copied to the local machine making a constant connection unnecessary.

Answer 13

Virtual Desktop Infrastructure (VDI) on premises.

Question 14

Also called hosted desktops. Maintained by a service provider in a cloud environment. Model eliminates capital cost and is instead subject to operation cost.

Answer 14

VDI In the cloud