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Difficulty: MediumCloud Characteristics and Features (Elasticity, On-Demand, Resource Pooling)

A digital publishing company hosts its news platform in a cloud environment. During major breaking news events, the web application automatically provisions additional virtual compute instances to handle the spike in visitor traffic and deprovisions them when traffic returns to baseline levels. In addition, the lead system administrator can instantly configure and deploy new database storage units using a web management portal without needing to contact the cloud service provider's support staff. Which of the following essential cloud characteristics are demonstrated in this scenario? (Select TWO).

  1. Rapid elasticityAnswer
  2. On-demand self-serviceAnswer
  3. C
    Resource pooling
  4. D
    Infrastructure as a Service

Answer

The correct cloud characteristics demonstrated in the scenario are rapid elasticity and on-demand self-service.
Rapid elasticity is demonstrated by the web platform automatically spinning up additional virtual compute instances during traffic spikes and scaling them down when traffic normalizes. On-demand self-service is demonstrated by the administrator's ability to provision new storage volumes via a portal without interacting with cloud vendor personnel.

Step-by-Step Solution

1
Analyze the automatic scaling up and down of web server instances during web traffic spikes.
Identified rapid elasticity as the mechanism allowing compute resources to expand and contract automatically based on application demand.
Rapid elasticity ensures systems scale seamlessly to accommodate unpredictable demand fluctuations.
2
Analyze the system administrator's ability to provision database storage directly using a web portal without vendor intervention.
Identified on-demand self-service as the characteristic providing direct customer control over infrastructure allocation.
On-demand self-service permits unilateral resource configuration without manual assistance from provider personnel.

Key Concept

Cloud Characteristics and Features (Elasticity, On-Demand, Resource Pooling)
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Cloud Characteristics and Features (Elasticity, On-Demand, Resource Pooling)

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