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.
What’s the difference between Response.Write() and Response.Output.Write()?
The latter one allows you to write formattedoutput.
3. What methods are fired during the page load?
Init() - when the page is instantiated,
Load() - when the page is loaded into server memory
PreRender() - the brief moment before the page is displayed to the user as HTML,
Unload() - when page finishes loading.
4. Where does the Web page belong in the
.NET Framework class hierarchy?System.Web.UI.Page
5. Where do you store the information about the user’s
locale?
System.Web.UI.Page.Culture
6. What’s the difference between
Codebehind="MyCode.aspx.cs" andSrc="MyCode.aspx.cs"? CodeBehind is relevant to Visual Studio.NET only.
7. What’s a bubbled event? When you have a complex control, like DataGrid, writing an event processing routine for each
object (cell, button, row, etc.) is quite tedious. The controls can bubble up their eventhandlers, allowing the main DataGrid
event handler to take care of its constituents.
8. Suppose you want a certain ASP.NET function executed on
MouseOver overa certain button. Where do you add an event handler?
It’s the Attributesproperty, the Add function inside that property. So btnSubmit.Attributes.Add("onMouseOver","someClientCode();")
9. What data type does the RangeValidator control support?
Integer, String and Date.
10. Explain
the differences between Server-side and Client-side code?
Server-side
code runs on the server. Client-side code runs in the clients’ browser.
11. What type
of code (server or client) is found in a Code-Behind class? Server-side
code.
12. Should
validation (did the user enter a real date) occur server-side or client-side? Why?
Client-side.
This reduces an additional request to the server to validate the users input.
13. What does
the "EnableViewState" property do? Why would I want it on or off?
It
enables the viewstate on the page. It allows the page to save the users input on a form.
14.
What is the difference between Server.Transfer and Response.Redirect? Why would I choose one over the other?
Server.Transfer is used to post a form to another page.
Response.Redirect is used to redirect the user to another page or site.
15.
Can you explain the difference between an ADO.NET Dataset and an ADO Recordset?
· A DataSet can represent an entire relational database in memory, complete with
tables, relations, and views.
· A DataSet is designed to work without any continuing connection to the original
data source.
· Data in a DataSet is bulk-loaded, rather than being loaded on demand.
· There's no concept of cursor types in a DataSet.
· DataSets have no current record pointer You can use For Each loops to move through
the data.
· You can store many edits in a DataSet, and write them to the original data source
in a single operation.
· Though the DataSet is universal, other objects in ADO.NET come in different
versions for different data sources.
16. Can you give an example of what might be best suited to place in the Application_Start and
Session_Start subroutines?
This is where you can set the specific
variables for the Application and Session objects.
17.
If I’m developing an application that must accommodate multiple security levels though secure login and my ASP.NET web
application is spanned across three web-servers (using round-robin load balancing) what would be the best approach to maintain
login-in state for the users?
Maintain the login state security through a database.
18. Can you explain what inheritance is and an example of when you might use it?
When you want to inherit (use the functionality of) another class. Base Class Employee. A Manager class could
be derived from the Employee base class.
19. Whats an assembly?
Assemblies are the building blocks of the .NET framework. Overview of assemblies from MSDN
20.
Describe the difference between inline and code behind. Inline code written along side the html in a page. Code-behind is code written in a separate file and referenced
by the .aspx page.
21. Explain
what a diffgram is, and a good use for one? The DiffGram is one
of the two XML formats that you can use to render DataSet object contents to XML. For reading database data to an XML file
to be sent to a Web Service.
22. Whats MSIL,
and why should my developers need an appreciation of it if at all?
MSIL is the Microsoft Intermediate Language. All .NET compatible languages will get converted to MSIL.
23. Which method
do you invoke on the DataAdapter control to load your generated dataset with data? The
.Fill() method
24. Can you
edit data in the Repeater control? No, it just reads the
information from its data source
25. Which template
must you provide, in order to display data in a Repeater control? ItemTemplate
26. How can
you provide an alternating color scheme in a Repeater control? Use
the AlternatingItemTemplate
27. What property
must you set, and what method must you call in your code, in order to bind the data from some data source to the Repeater
control? You must set the DataSource property and call the DataBind
method.
28. What base
class do all Web Forms inherit from? The Page class.
29. Name two
properties common in every validation control? ControlToValidate
property and Text property.
30. What tags
do you need to add within the asp:datagrid tags to bind columns manually? Set AutoGenerateColumns Property to false on the datagrid tag
31. What tag
do you use to add a hyperlink column to the DataGrid?
32. What is
the transport protocol you use to call a Web service?
SOAP is the preferred protocol.
33. True or
False: A Web service can only be written in .NET? False
34. What does
WSDL stand for? (Web Services Description Language)
35. Where on
the Internet would you look for Web services?
(http://www.uddi.org)
36. Which property
on a Combo Box do you set with a column name, prior to setting the DataSource, to display data in the combo box? DataTextField property
37. Which control
would you use if you needed to make sure the values in two different controls matched? CompareValidator Control
38. True or
False: To test a Web service you must create a windows application or Web application to consume this service?
False,
the web service comes with a test page and it provides HTTP-GET method to test.
39. How many classes can a single .NET DLL contain? It can
contain many classes
40).What is Boxing?
Process of converting
value type to reference type.
41) What is an Application Domain?
An AppDomain can be thought of as a
lightweight process. Multiple AppDomains can exist inside a Win32 process. The primary purpose of the AppDomain is to isolate
an application from other applications.
Win32 processes provide isolation by having
distinct memory address spaces. This is effective, but it is expensive and doesn't scale well. The .NET runtime enforces AppDomain
isolation by keeping control over the use of memory - all memory in the AppDomain is managed by the .NET runtime, so the runtime
can ensure that AppDomains do not access each other's memory.
42. What is garbage
collection?
Garbage collection is a system whereby
a run-time component takes responsibility for managing the lifetime of objects and the heap memory that they occupy. This
concept is not new to .NET - Java and many other languages/runtimes have used garbage collection for some time.
43. What is serialization?
Serialization is the process of converting
an object into a stream of bytes. Deserialization is the opposite process of creating an object from a stream of bytes. Serialization/Deserialization
is mostly used to transport objects (e.g. during remoting), or to persist objects (e.g. to a file or database).
44. Does the
.NET Framework have in-built support for serialization?
There are two separate mechanisms provided
by the .NET class library - XmlSerializer and SoapFormatter/BinaryFormatter. Microsoft uses XmlSerializer for Web Services,
and uses SoapFormatter/BinaryFormatter for remoting. Both are available for use in your own code.
- What are the contents
of cookie?
- How do you create a
permanent cookie?
- How can you debug an ASP page, without touching the code?
- How can u handle Exceptions in Asp.Net?
- How can u handle Un Managed Code Exceptions in ASP.Net?
6.What is a proxy in web service? How do I use a proxy server when invoking a Web service?
You can access a web service from within an application, by creating a
web service proxy class. The Microsoft .NET framework SDK includes a built-in command line tool called Wsdl.exe which
is used to generate proxy classes for consuming web services.
- asynchronous web service means?
- What are the events fired when web service called?
- How will do transaction in Web Services?
- How does SOAP transport happen and what is the role of HTTP in it? How you can access a webservice using soap?
- Can you pass SOAP messages through remoting?
- If I have more than one version of one assemblies, then how'll I use old version (how/where to specify version
number?)in my application?
