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Question 18 : Which cloud computing characteristic enables consumers to request resources using a service catalog through a web-based user interface?

A. On-demand self-service

B. Broad network access

C. Metered services

D. Catalog management

Answer: A

Explanation: On-Demand Self-Service : 

A consumer can unilaterally provision computing capabilities, such as server time and network storage, as needed automatically without requiring human interaction with each service provider. A cloud service provider publishes a service catalogue, which contains information about all cloud services available to consumers. The service catalogue includes information about service attributes, prices, and request processes. Consumers view the service catalogue via a web-based user interface and use it to request for a service. Consumers can either leverage the “ready-touse” services or change a few service parameters to customize the services.

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