.Net Web Interview Questions and Answers 5

What is used to validate complex string patterns like an e-mail address?
* Extended expressions
* Regular expressions
* Irregular expressions
* Basic expressions

Regular Expression.

The following is a valid statement in ASP.NET<%@ Page Language="C" %>
* True
* False

False

A valid comment block in ASP.NET is
*
*
* <% - - Comment - - %>
* <% ! - - Comment - - >

<% - - Comment - - %>

The event handlers that can be included in the Global.asax file are
* Application Start and
Session Start event handlers only
* Application End and
Session End event handlers only
* Per-request and Non-deterministic event handlers only
* Application Start and End ,

Application Start and End

A Few of the Namespaces that get imported by default in an ASPX file are
* System, System.Data, System.Drawing,
System.Globalization
* System,
System.IO, System.Management, System.Globalization
* System, System.Collections,
System.Text, System.Web
* System,
System.NET,
System.Reflection, System.Web

System, System.Collections, System.Text, System.Web

The Assemblies that can be referenced in an ASPX file without using @Assembly Directive is
* System.dll, System.Data.dll,
System.Web.dll, System.Xml.dll,
* System.dll,
System.Collections.dll, System.IO.dll
* System.dll, System.Reflection.dll,
System.Globalization.dll,
* System.Drawing.dll, System.Assembly.dll,
System.Text.dll

System.dll, System.Data.dll, System.Web.dll, System.Xml.dll

An .ASHX file contains the following
* Code-behind that are used in the code
* Server Controls that can be called from a code-behind file
* HTTP handlers-software modules that handle raw HTTP requests received by ASP.NET
* Contains normal ASP.NET code and can be used as an include file

HTTP handlers-software modules that handle raw HTTP requests received by ASP.NET

What is the output for the following code snippet:
public class testClass
{
public static void Main(string[] args)
{
System.Console.WriteLine(args[1]);
}//end Main
}//end class testClass

* Compiler Error
* Runtime Error
* Hello C# world
* None of the above

Runtime Error

One of the possible way of writing an ASP.NET handler that works like an ISAPI filter- that is, that sees requests and responses and modifies them also, is by,
* writing a module that extends FormsAuthenticatonModule and using it
* writing a component class that extends HttpModuleCollection and using it
* writing an HTTP module-a Class that implements IhttpModule and registering it in Web.Config
* All of the above

writing an HTTP module-a Class that implements IhttpModule and registering it in Web.Config

The ASP.NET directive that lets you cache different versions of a page based on varying input parameters, HTTP headers and browser type is
* @OutputCache
* @CacheOutput
* @PageCache
* @CacheAll

@ OutputCache

If we develop an application that must accommodate multiple security levels through secure login and 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?
*
*
*

SessionState mode=”stateserver” stateConnectionString=”tcpip=127.0.0.1:42424? sqlConnectionString=”data source=127.0.0.1;user id=sa;password=” cookieless=”false” timeout=”30?

What is the output for the below mentioned compilation command>csc /addmodule:A.Exe B.Cs
* A.exe
* B.exe
* A.dll
* B.dll

B.exe

How can be the web application get configured with the following authorization rules
* Anonymous users must not be allowed to access the application.
* All persons except David and John must be allowed to access the application.
o <
o
o
o

authorization deny users = “applicationname\David, applicationname\John” deny users = “?” allow users =”*” /authorization

What will be the output of the following code snippet?
using System;
class MainClass
{
static void Main( )
{
new MainClass().Display( 3.56 );
}

private void Display( float anArg )
{
Console.Write( “{0} {1}”, anArg.GetType(), anArg );
}

double Display( double anArg )
{
Console.Write( “{0} {1}”, anArg.GetType(), anArg );
return anArg;
}

public decimal Display( decimal anArg )
{
Console.Write( “{0} {1}”, anArg.GetType(), anArg ); return anArg;
}
}

* System.Single 3.56
* System.Float 3.56
* System.Double 3.56
* System.Decimal 3.56

System.Double 3.56

What will be output for the given code?
Dim I as integer = 5
Do
I = I + 2
Response.Write (I & " ")
Loop Until I > 10

* 5 8
* 5 7 9
* 7 9 11
* Errors out

7 9 11 (if corrected)