ASP.NET Interview Questions and Answers (1544) - Page 77

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Which one of the following is used to obtain performance information about a Web Application ?

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___________ methods are used with application object to ensure only one process accesses a variable time ?

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By default,ASP.NET store Session IDs in ____________ ?

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Which one of the following is to be implemented for .NET remote server object ?

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____________ is a property common in every validation control ?

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What namespace does the webpage belong in the .Net Frame Work class hierarchy ?

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Which of the following base class do all the web Forms inherit from ?

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Which one of the following is the last stage of the Web Forms life cycle ?

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__________ is the first method that is fired during the page load ?

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When does garbage collector runs ?

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Which one of the following is the type of assembly that contains localized resource ?

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Which of the following object encapsulates the state of client and the browser ?

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____________ is the Microsoft IIS server running , handling ASP.NET requests among other things ?

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Which of the following is the fastest way to concat strings in ASP.NET ?

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Which one of the following is used to obtain performance information about a web application ?

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What are HttpHandlers and HttpModules in ASP.NET?

HttpHandler : ASP.NET uses HttpHandlers to handle specific requests on the basis of it's extensions. ASP.NET Page Handler handles all requests coming for (.aspx) pages. Similarly, we can create our own HttpHandler also to handle a specific request with a specific extension for images, javascript, css etc.

Note : Only one handler can be there for a one extension.

HttpModule : ASP.NET uses HttpModules to add some specific functionality along with ASP.NET default functionality for all incoming requests regardless of its extensions. It can be used to URL re-writing and some other security related implementations.

Default session mode in web.config file?

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In page life cycle in which event the final changes to viewstate and control values can be made?

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What is the difference between a Hash Table and a Dictionary?

The main differences are listed below.

Dictionary:

Returns an error if the key does not exist
No boxing and unboxing
Faster than a Hash table
Hashtable:

Returns NULL even if the key does not exist
Requires boxing and unboxing
Slower than a Dictionary

Explain the application event handlers in ASP.NET ?

Below are the event handlers in sequence of their execution -

Application_Start - Fired when the first user visits a page of the application or first resource is requested from the server.
Application_End - Fired when there are no more users of the application.
Application_BeginRequest - Fired at the beginning of each request to the server.
Application_EndRequest - Fired at the end of each request to the server.
Session_Start - Fired when any new user visits.
Session_End - Fired when the users stop requesting pages and their session times out.