Explanation/Reference:
Explanation:
D: You can control whether tracing is enabled or disabled for individual pages. If tracing is enabled, when the page is requested, ASP.NET appends to the page a series of tables containing execution details about the page request. Tracing is disabled by default.
To enable tracing for a page
1. Include an @ Page directive at the top of your .aspx file.
2. Add a Trace attribute and set its value to true, as shown in the following example:
<%@ Page Trace="true" %>
You can also configure tracing in the Web.config file by setting the enabled, localOnly, and pageOutput attributes of the trace Element (ASP.NET Settings Schema) B: To view trace details for a specific request Navigate to Trace.axd in the root of your application.
For example, if the URL for your application is http://localhost/SampleApplication, navigate to http:// localhost/SampleApplication/trace.axd to view the trace information for that application.
Select the View Details link for the request that you want to investigate.
References:
https://msdn.microsoft.com/en-us/library/94c55d08.aspx
https://msdn.microsoft.com/en-us/library/wwh16c6c.aspx