Which of the following configuration files contains the ASP.NET settings that apply to the entire Web
server and is used to control the configuration settings for the entire computer?

A.
Common.config

B.
Web.config

C.
Machine.config

D.
PolicyCache.config

Explanation:
The Machine.config file contains the ASP.NET settings that apply to the entire Web server. The
Machine.config file controls the configuration settings for the entire computer. It includes settings
specific to a computer, such as built-in remoting channels, machine-wide assembly binding, and ASP
.NET configuration settings. The configuration system first searches for APIs and ASP .NET settings in
the machine.config file. The default configuration of the .NET Framework is declared in the
Machine.config file.
Answer B is incorrect. Web.config is the main settings and configuration file for an ASP.NET Web
application. The file is an XML document that defines configuration information regarding the Web
application. It contains information that control module loading, security configuration, session state
configuration, and application language and compilation settings. Web.config files can also contain
application specific items, such as database connection strings.
Answer A is incorrect. The Common.config file consists of three sections, namely <SystemURIs>,
<DBConnectionStrings>, and <RetrySettings>.
Answer D is incorrect. The TraceSessions.config file is used by the Enterprise Instrumentation
Framework (EIF), which is used by the CSF.