CompTIA A+ Core 1 (220-1201)Virtualization and Cloud ComputingEasy
A cloud customer wants to provision additional virtual servers instantly through a web portal without contacting the provider's support staff or waiting for a technician to intervene. Which cloud computing characteristic does this describe?
- ARapid elasticity
- BOn-demand self-service
- CResource pooling
- DMeasured service
Show answer & explanationAnswer & explanation
Correct answer: B. On-demand self-service
On-demand self-service allows a consumer to provision computing resources automatically without requiring human interaction with the service provider. The customer uses a portal or API to get resources instantly.
Why the other options are wrong
- A. Rapid elasticity refers to scaling resources up or down quickly, not the provisioning method.
- C. Resource pooling refers to sharing underlying hardware among multiple tenants, not self-provisioning.
- D. Measured service refers to usage tracking and billing, not provisioning access.
On-Demand Self-Service
A cloud characteristic allowing consumers to automatically provision computing resources as needed without human interaction with the provider.
- One of the core NIST cloud characteristics
- Achieved via web portals or APIs
- No provider staff involvement required
Memory trick: Self-serve means no waiter needed — click and get your resource.