Which of the following concepts would be used by an online retailer to quickly add more web servers during peak sales times?

The correct answer is B. Rapid elasticity. Rapid elasticity is one of the five essential characteristics of cloud computing defined by NIST. It refers to the ability to quickly provision and release computing resources - such as additional web servers - on demand to match workload fluctuations. An online retailer can scal

Virtualization and cloud computing

Question

Options

ACommunity cloud
BRapid elasticity
CHigh availability
DMetered service

How the community answered

(41 responses)

B
95% (39)
C
2% (1)
D
2% (1)

Explanation

Rapid elasticity is one of the five essential characteristics of cloud computing defined by NIST. It refers to the ability to quickly provision and release computing resources - such as additional web servers - on demand to match workload fluctuations. An online retailer can scale out during a holiday sale and scale back in afterward, paying only for what is used. Community cloud (A) describes a shared cloud environment for organizations with common interests. High availability (C) refers to designing systems to minimize downtime, not to dynamic scaling. Metered service (D) refers to the pay-per-use billing model, not the act of scaling resources.

Topics

#Cloud computing#Rapid elasticity#Scalability#Web servers

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