You are implementing an ASP.NET Web site that uses a custom server control named Task. Task is
defined as shown in the following list.
• Class name: Task
• Namespace: DevControls
• Assembly: TestServerControl.dll

• Base class: System.Web.UI.WebControls.WebControl
You copy TestServerControl.dll to the Web sites Bin folder.
You need to allow the Task control to be declaratively used on site pages that do not contain an
explicit @ Register directive.
Which configuration should you add to the web.config file?

A.
<appSettings>
<add key=”Dev:Task”
value=”DevControls, DevControls.Task”/>
</appSettings>

B.
<compilation targetFramework=”4.0″ explicit=”false”>
<assemblies>
<add assembly=”TestServerControl” />
</assemblies>
</compilation>

C.
<pages>
<controls>
<add assembly=”TestServerControl” namespace=”DevControls”
tagPrefix=”Dev”/>
</controls>
</pages>

D.
<pages>
<tagMapping>
<add tagType=”System.Web.UI.WebControls.WebControl”
mappedTagType=”DevControls.Task”/>
</tagMapping>
</pages>

Explanation:
CHAPTER 7 Creating Custom Web Controls
Lesson 2: Creating Custom Web Server Controls
Registering Your Controls in Web.config (page 378-379)