Which of the following typically involves the provision of dynamically scalable and often virtualized
resources as a service over the Internet?

A.
Thin client

B.
Cloud computing

C.
Application Virtualization

D.
Terminal services

Explanation:

Cloud computing typically involves the provision of dynamically scalable and often virtualized
resources as a service over the Internet. It provides common business applications online that are
accessed from a web browser, while the software and data are stored on the servers.
Answer option A is incorrect. A thin client is a low-cost computer, often legacy desktops, with limited
resources. Thin clients run the latest operating systems (Windows 2000 Server and Windows Server
2003) and applications through special software such as the Terminal Services application. There is
no requirement to install and configure applications on each computer, as the software are installed
and configured in a centralized location on the server. Hence, the maintenance tasks are centralized.
Answer option D is incorrect. Terminal Services is a multisession environment that provides remote
computers access to Windows-based programs running on a server. When a user runs a program on
a Terminal Server, the application execution takes place on the server, and only the keyboard,
mouse and display information are transmitted over the network. Each user sees only his individual
session, which is managed transparently by the server operating system, and is independent of any
other client session.
Answer option C is incorrect. Application virtualization is an umbrella term that describes software
technologies that improve portability, manageability and compatibility of applications by
encapsulating them from the underlying operating system on which they are executed.
Reference: ” http://en.wikipedia.org/wiki/Cloud_computing”