Virtualization and Cloud Computing Flashcards
Summarize the private cloud model.
Where an org. builds and manages its own cloud infrastructure within its internal data center. Resources are not shared outside the org. Offers greater control over data, security, and compliance, but has significant upfront and ongoing maintenance costs.
Summarize the public cloud model.
Provides cloud services over the internet through a third party (AWS, Azure, Google Cloud). Servers and storage are shared among multiple users and organizations. The cloud provider owns and manages the hardware, offering easy scalability and usage-metered costs.
Summarize the hybrid cloud model.
Combines public and private clouds. Sensitive data can be securely kept in the private cloud, while less sensitive data can leverage the scalability and metered usage of the public cloud. Lets an org. use its existing infrastructure and security while still utilizing the public cloud.
Summarize the community cloud model.
Several organizations share a private cloud. Every org. helps pay, and they benefit from a more robust infrastructure than one alone could afford.
Summarize the IaaS model.
The cloud provider manages the hardware, but the user is responsible for installing the OS and apps and managing the data. Gives control over VMs, storage, or networks without having to invest in the hardware.
Summarize the PaaS model.
The cloud provider offers an environment to support the building and delivering of web-based apps. They provide the hardware, as well as the OS, and some underlying programs necessary for apps to function.
Summarize the SaaS model.
The cloud provider delivers ready-to-use apps over the internet on a subscription basis. The user just uses the software, while the provider manages the hardware, OS, app updates, and security.
Summarize the cloud characteristic of shared resources.
The pooling of computing resources to serve multiple consumers. Storage, processing power, and network bandwidth are dynamically assigned according to user demand, maximizing resource utilization and efficiency, lowering costs for users.
Summarize the cloud characteristic of metered utilization.
Cloud users are billed based on the amount of resources consumed. Users pay for what they use, whether it’s hours computed, storage space, or data transfer volumes.
Summarize the cloud characteristic of rapid elasticity.
The ability to quickly scale resource usage as demand fluctuates. Resources are provisioned and released automatically, giving the illusion of unlimited resources. Apps get to have the resources they need when they need them, but can be reduced when not needed, reducing costs.
Summarize the cloud characteristic of high availability.
The cloud ensures that services and apps are continuously operational with minimal downtime. Crucial for critical apps that require constant accessibility and reliability.
Summarize the cloud characteristic of file synchronization.
The cloud ensures that files and data are consistently updated and accessible across multiple devices. When changes are made on one, it updates to the others.
Summarize VDI.
Hosts desktop environments on a centralized server that are accessed over a network. Allows for centralized management, improved security, and flexibility for users.
Summarize VDI on premises.
Hosting the VDI infrastructure in the org.’s own data center. Maintains control over hardware, storage, and network resources, but requires upfront costs and ongoing maintenance.
Summarize VDI in the cloud.
Also called DaaS, a cloud service provider delivers virtual desktops. Users can access their desktop anywhere they have internet, and the org. saves money and can easily scale.
