Public, Private & Hybrid Clouds for A+
Short answer
Public cloud: provider-hosted and operated; customers consume resources without owning the infrastructure. Private cloud: dedicated to one organization; may be on-premises or hosted by a provider for exclusive use. Hybrid cloud: integration or combination of private/on-premises resources with public-cloud resources. The technician-level concern is recognizing which model is described and what that implies for control and where resources live.
Why it appears on the exam
- Recognize which deployment model fits a short support scenario (direct recognition). - Identify hybrid-cloud cues like "mixes on-premises with provider resources" or bursting. - Distinguish private cloud when isolation/dedication is explicit.
Key concepts
Concept 1
Required terms
public cloud: Cloud services delivered by a provider in the provider's environment, shared among many customers. private cloud: Cloud infrastructure dedicated to a single organization, either on-premises or hosted for that single tenant. hybrid cloud: A combination of private/on-premises resources and public-cloud resources working together.
Example
A small company uses a provider's hosted virtual machines and managed databases only -> public cloud.
Concept 2
How Public, Private & Hybrid Clouds works
Public cloud: provider-hosted and operated; customers consume resources without owning the infrastructure. Private cloud: dedicated to one organization; may be on-premises or hosted by a provider for exclusive use. Hybrid cloud: integration or combination of private/on-premises resources with public-cloud resources. The technician-level concern is recognizing which model is described and what that implies for control and where resources live.
Example
A government agency runs a cloud environment dedicated to its departments, isolated from external tenants -> private cloud.
Concept 3
Common confusion
- Calling any remotely hosted service "public cloud" even when it's a private cloud using provider-hosted dedicated hardware. - Confusing hybrid cloud with multicloud (hybrid implies mixing private and public with some integration).
Example
A retail chain keeps its POS systems on-premises but scales web storefront servers into a provider cloud during peak events -> hybrid cloud.
Concept 4
Core 1 (220-1201) question cues
Recognize which deployment model fits a short support scenario (direct recognition); Identify hybrid-cloud cues like "mixes on-premises with provider resources" or bursting; Distinguish private cloud when isolation/dedication is explicit.
Example
A small company uses a provider's hosted virtual machines and managed databases only -> public cloud.
Sample questions
Select an answer to reveal the explanation. For tracked practice and weak-area review, use the Cultiv8 app.
Q1.An A+ support scenario describes this situation: A small company uses a provider's hosted virtual machines and managed databases only -> public cloud. Which answer fits best?
Q2.A technician sees this situation: A government agency runs a cloud environment dedicated to its departments, isolated from external tenants -> private cloud. Which answer should they choose?
Q3.Read this A+ scenario: A retail chain keeps its POS systems on-premises but scales web storefront servers into a provider cloud during peak events -> hybrid cloud. Which term or action matches it?
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