1. Describe the role of inetinfo.exe, aspnet_isapi.dll and aspnet_wp.exe in the page loading process ?

inetinfo.exe is the Microsoft IIS server running, handling ASP.NET requests among other things. When an ASP.NET request is received (usually a file with .aspx extension), the ISAPI filter aspnet_isapi.dll takes care of it by passing the request to the actual worker process aspnet_wp.exe.

2. Which control would you use if you needed to make sure the values in two different controls matched?

CompareValidator control

3. Define Private, Public / Shared and Satellite Assembly 

Private Assemblies : Assembly used within an application is known as private assemblies.

Public/shared Assemblies : Assembly which can be shared across applicaiton is known as shared assemblies. Strong Name has to be created to create a shared assembly. This can be done using SN.EXE. The same has to be registered using GACUtil.exe (Global Assembly Cache).

Satellite Assemblies : These assemblies contain resource files pertaining to a locale (Culture+Language). These assemblies are used in deploying an Gloabl applicaiton for different languages.

4. Explain the differences between Server-side and Client-side code?

Server side scripting means that all the script will be executed by the server and  interpreted as needed. ASP doesn't have some of the functionality like sockets, uploading,  etc. For these you have to make a custom components usually in VB or VC++. Client side  scripting means that the script will be executed immediately in the browser such as form field validation, clock, email validation, etc.

Client side scripting is usually done in  VBScript or JavaScript. Download time, browser compatibility, and visible code - since  JavaScript and VBScript code is included in the HTML page, then anyone can see the code by viewing the page source. Also a possible security hazards for the client computer.

5. How do you turn off cookies for one page in your site?

Since no Page Level directive is present, I am afraid that cant be done.

6. What data type does the RangeValidator control support?

Integer,String and Date.

7. What do you mean by authentication and authorization?

Authentication is the process of validating a user on the credentials (username and password) and authorization performs after authentication. After Authentication a user will be verified for performing the various tasks, Its access is limited it is known as authorization.

8. What are the different types of caching?

Caching is a technique widely used in computing to increase performance by keeping frequently accessed or expensive data in memory. In context of web application, caching is used to retain the pages or data across HTTP requests and reuse them without the expense of recreating them.

ASP.NET has 3 kinds of caching strategies - Output Caching, Fragment Caching, Data Caching.

Output Caching : Caches the dynamic output generated by a request. Some times it is useful to cache  the output of a website even for a minute, which will result in a better  performance. For caching the whole page the page should have OutputCache directive.<%@ OutputCache Duration="60" VaryByParam="state" %>

Fragment Caching : Caches the portion of the  page generated by the request. Some times it is not practical to cache the entire page, in such cases we can cache a portion of page<%@ OutputCache Duration="120" VaryByParam="CategoryID;SelectedID"%>

Data Caching : Caches the objects programmatically. For     data caching asp.net provides a cache object for eg: cache["States"] = dsStates;

9. What tag do you use to add a hyperlink column to the DataGrid?

< asp:HyperLinkColumn > </ asp:HyperLinkColumn>

10. What are different templates available in Repeater,DataList and Datagrid ?

Templates enable one to apply complicated formatting to each of the items displayed by a control.Repeater control supports five types of templates.HeaderTemplate controls  how the header of the repeater control is formatted.ItemTemplate controls the formatting of each  item displayed.AlternatingItemTemplate controls how alternate items are formatted and the  SeparatorTemplate displays a separator between each item displyed.FooterTemplate is used for  controlling how the footer of the repeater control is formatted.The DataList and Datagrid supports two templates in addition to the above five.SelectedItem Template controls how a selected item is  formatted and EditItemTemplate controls how an item selected for editing is formatted.

11. Should validation (did the user enter a real date) occur server-side or client-side? Why?

Client-side validation because there is no need to request a server side date when you  could obtain a date from the client machine.

12. How do you create a permanent cookie?

Permanent cookies are available until a specified expiration date, and are stored on the hard disk.So Set the 'Expires' property any value greater than DataTime.MinValue with respect to the current datetime. If u want the cookie which never expires set its Expires property equal to DateTime.maxValue.

13. Which two properties are on every validation control?

We have two common properties for every validation controls

1. Control to Validate,
2. Error Message

14. What are ASP.NET Web Forms? How is this technology different than what is available though ASP?

Web Forms are the heart and soul of ASP.NET. Web Forms are the User Interface (UI) elements that give your Web applications their look and feel. Web Forms are similar to Windows Forms in that they provide properties, methods, and events for the controls that are placed onto  them. However, these UI elements render themselves in the appropriate markup language   required by the request, e.g. HTML. If you use Microsoft Visual Studio .NET, you will also get the familiar drag-and-drop interface used to create your UI for your Web application.

15. What's the difference between Page.RegisterClientScriptBlock and Page.RegisterStartupScript?

RegisterClientScriptBlock is for returning blocks of client-side script containing functions. RegisterStartupScript is for returning blocks of client-script not   packaged in functions-in other words, code that's to execute when the page is loaded. The latter positions script blocks near the end of the document so elements on the page that the script interacts are loaded before the script runs.<%@ Reference Control="MyControl.ascx" %>