Which of the following statements correctly describes an application pool?

A.
It is a collection of directory files that will be served by a worker process or a set of worker
processes.

B.
It is a collection of configuration files that will be served by a worker process or a set of worker
processes.

C.
It is a collection of URLs that will be served by a worker process or a set of worker processes.

D.
It is a collection of database objects that will be served by a worker process or a set of worker
processes.

Explanation:
An application pool is a collection of URLs. These URLs are served by a worker process or a set of
worker processes. It limits process boundaries to separate applications and prevent them from
affecting another application on a Web server. In IIS7, an application pool operates in two modes:
Integrated mode, in which the application uses the integrated request-processing architecture of IIS
and ASP.NET; and Classic mode, in which IIS7 handles requests in the same way as IIS6 worker
process isolation mode. Application pools provide the following features:
Improved server and application performance: Administrators can assign resource-intensive
application to their own application pools to isolate such applications and prevent from hampering
other applications performance.
Improved application availability: In case an application in a pool fails; it will not affect other
applications in other pools.
Improved security: Through application isolation, administrators reduce the chance that one
application will access the resources of another application.
The Classic mode of application pool is used to maintain compatibility with older applications.