Comptia Security Plus Mock Test Q89

The Chief Information Officer (CIO) has mandated web based Customer Relationship Management (CRM) business functions be moved offshore to reduce cost, reduce IT overheads, and improve availability. The Chief Risk Officer (CRO) has agreed with the CIO’s direction but has mandated that key authentication systems be run within the organization’s network. Which of the following would BEST meet the CIO and CRO’s requirements?

A. Software as a Service
B. Infrastructure as a Service
C. Platform as a Service
D. Hosted virtualization service

Correct Answer: A
Section: Network Security

Explanation:
Software as a Service (SaaS) is a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network, typically the Internet.

Incorrect Answers:
B: In an IaaS model, a third-party provider hosts hardware, software, servers, storage and other infrastructure components on behalf of its users. IaaS providers also host users’
applications and handle tasks including system maintenance, backup and resiliency planning.

C: Platform as a service (PaaS) is a cloud computing model that delivers applications over the Internet. In a PaaS model, a cloud provider delivers hardware and software tools
(usually those needed for application development) to its users as a service.

D: It is used to provide software development and QA/testing teams access to dependent system components that are needed to exercise an application under test (AUT), but are
unavailable or difficult-to-access for development and testing purposes.

References:
http://searchcloudcomputing.techtarget.com/definition/Software-as-a-Service
http://searchcloudcomputing.techtarget.com/definition/Infrastructure-as-a-Service-IaaS
http://searchcloudcomputing.techtarget.com/definition/Platform-as-a-Service-PaaS
http://en.wikipedia.org/wiki/Service_virtualization