Question
Your ASP.NET application TestKingApp displays sales data on a page. You want to improve performance by holding the page in memory on the server for one hour. You want to ensure that the page is flushed from memory after one hour, and that the page is re-created when the next request for the page is received. What should you do?

A. Initialize a new instance of the Cache class in the Application.Start event handler.

B. Initialize a new instance of the Timer class in the Page.Load event handler.

C. Set the Duration attribute of the OutputCache directive in the page.

D. In the Web.config file, set the timeout attribute of the sessionState element.
Answers
Answer: C

Explanation: ASP.NET allows you to cache the entire response content for dynamic pages on HTTP 1.1 capable mechanisms, including browsers, proxy servers, and the origin Web server where your application resides. This provides a powerful way for you to increase the performance of your Web applications. Called output caching, it allows subsequent requests for a particular page to be satisfied from the cache so the code that initially creates the page does not have to be run upon subsequent requests.
To set output-cache expirations for a page declaratively. Include an @ OutputCache directive in the page (.aspx file) that you want to output cache. The directive must include a Duration attribute.
Reference:
.NET Framework Developer's Guide, Caching ASP.NET Pages [C#]
.NET Framework Developer's Guide, Setting Expirations for Page Caching [C#]   Your Comment




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