Cloud Computing Flashcards
What does “high availability” mean in the context of cloud services?
It means cloud services are highly reliable, with minimal downtime, often measured in uptime percentage (e.g., 99.999% equals just over 5 minutes of downtime annually).
What is the difference between vertical and horizontal scalability?
Vertical scaling adds more power to existing servers, while horizontal scaling adds more servers to distribute the load.
What is “elasticity” in cloud computing?
Elasticity refers to the ability of cloud resources to automatically scale up or down based on demand, allowing for cost-effectiveness during fluctuating workloads.
How does metered utilization work in cloud computing?
It is a pay-per-use model where customers are billed based on actual resource usage, like storage, data transfer, or connections.
What is meant by “shared resources” in the cloud?
Cloud infrastructure uses pooled resources shared across multiple customers, optimizing costs.
What is file synchronization in cloud computing?
File synchronization automatically updates files across all connected devices, ensuring consistency and accessibility.
What is a public cloud?
A public cloud is a cloud environment provided over the internet by third-party providers like AWS and Microsoft Azure, offering scalable and cost-effective solutions but with less control over security.
What are the benefits and challenges of a private cloud?
A private cloud offers greater security and control but is more expensive and harder to manage.
What is a hybrid cloud?
A hybrid cloud combines private and public clouds, offering flexibility but requiring strict governance over data access and location.
What is a community cloud?
A community cloud is shared by multiple organizations with similar needs, offering cost-sharing but potentially facing security challenges due to varying standards.
What is the difference between on-premise and hosted solutions?
On-premise solutions are hosted within an organization’s facility with more control but higher costs, while hosted solutions are outsourced to third-party providers like AWS or Azure, offering cost-effective and scalable options.
What does SaaS (Software as a Service) provide?
SaaS delivers fully managed applications hosted by the provider, such as Google Workspace and Microsoft 365, with minimal user management.
What is PaaS (Platform as a Service)?
PaaS provides managed hardware and software infrastructure, allowing users to develop and run applications without managing the underlying infrastructure.
What is IaaS (Infrastructure as a Service)?
IaaS provides basic IT resources like servers, storage, and networking, where users manage operating systems and applications.
What is VDI (Virtual Desktop Infrastructure)?
VDI is a cloud-based solution where desktop environments are hosted on centralized servers, providing device independence and centralized management.
