ASP.NET and .NET WEB Questions and Answers

Interview Questions

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ASP.NET and .NET WEB Questions and Answers

How many languages .NET is supporting now?
How is .NET able to support multiple languages?
How ASP .NET different from ASP?
What is smart navigation?
What is view state?
How do you validate the controls in an ASP .NET page?
Can the validation be done in the server side? Or this can be done only in the Client side?
How to manage pagination in a page?
What is ADO .NET and what is difference between ADO and ADO.NET?
Explain the differences between Server-side and Client-side code?
What type of code (server or client) is found in a Code-Behind class?
Should validation (did the user enter a real date) occur server-side or client-side? Why?
What does the "EnableViewState" property do? Why would I want it on or off?
What is the difference between Server.Transfer and Response.Redirect?
Can you give an example of when it would be appropriate to use a web service as opposed to a non-serviced .NET component?
Can you explain the difference between an ADO.NET Dataset and an ADO Recordset?
Can you give an example of what might be best suited to place in the Application_Start and Session_Start subroutines?
What are ASP.NET Web Forms? How is this technology different than what is available though ASP?
How does VB.NET/C# achieve polymorphism?
Can you explain what inheritance is and an example of when you might use it?
How would you implement inheritance using VB.NET/C#?
Whats an assembly?
Describe the difference between inline and code behind - which is best in a loosely coupled solution?
Explain what a diffgram is, and a good use for one?
Where would you use an iHTTPModule, and what are the limitations of anyapproach you might take in implementing one?
In what order do the events of an ASPX page execute. As a developer is it important to undertsand these events?
Which method do you invoke on the DataAdapter control to load your generated dataset with data?
Which template must you provide, in order to display data in a Repeater control?
How can you provide an alternating color scheme in a Repeater control?
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?
What base class do all Web Forms inherit from?
What method do you use to explicitly kill a user’s session?
How do you turn off cookies for one page in your site?
Which two properties are on every validation control?
How do you create a permanent cookie?
Which method do you use to redirect the user to another page without performing a round trip to the client?
What is the transport protocol you use to call a Web service?
True or False: A Web service can only be written in .NET.?
What does WSDL stand for?
Where on the Internet would you look for Web services?
What tags do you need to add within the asp:datagrid tags to bind columns manually?
How is a property designated as read-only?
Which control would you use if you needed to make sure the values in two different controls matched?
True or False: To test a Web service you must create a windows application or Web application to consume this service?
How many classes can a single .NET DLL contain?
Describe session handling in a webfarm, how does it work and what are the limits?
What are the disadvantages of viewstate/what are the benefits?
What tags do you need to add within the asp:datagrid tags to bind columns manually?
What is State Management in .Net and how many ways are there to maintain a state in .Net? What is view state?
What tag do you use to add a hyperlink column to the DataGrid?
What is the standard you use to wrap up a call to a Web service?
What is the difference between boxing and unboxing?
Describe the difference between a Thread and a Process?
What is a Windows Service and how does its lifecycle differ from a “standard” EXE?
What is the difference between an EXE and a DLL?
What is strong-typing versus weak-typing? Which is preferred? Why?
What are PDBs? Where must they be located for debugging to work?
What is cyclomatic complexity and why is it important?
What is FullTrust? Do GAC’ed assemblies have FullTrust?
What does this do? gacutil /l | find /i “about”
Contrast OOP and SOA. What are tenets of each
How does the XmlSerializer work? What ACL permissions does a process using it require?
Why is catch(Exception) almost always a bad idea?
What is the difference between Debug.Write and Trace.Write? When should each be used?
What is the difference between a Debug and Release build? Is there a significant speed difference? Why or why not?
Contrast the use of an abstract base class against an interface?
What is the difference between a.Equals(b) and a == b?
How would one do a deep copy in .NET?
What is boxing?
Is string a value type or a reference type?
How does the lifecycle of Windows services differ from Standard EXE?
What’s wrong with a line like this? DateTime.Parse(myString)
NET is Compile Time OR RunTime Environment?
Describe the role of inetinfo.exe, aspnet_isapi.dll andaspnet_wp.exe in the page loading process.
What’s the difference between Response.Write() andResponse.Output.Write()?
What methods are fired during the page load?
Where does the Web page belong in the .NET Framework class hierarchy?
Where do you store the information about the user’s locale?
What’s the difference between Codebehind="MyCode.aspx.cs" andSrc="MyCode.aspx.cs"?
What’s a bubbled event?
Suppose you want a certain ASP.NET function executed on MouseOver overa certain button. Where do you add an event handler?
What data type does the RangeValidator control support?
Which of the following languages is NOT included in the default .NET Framework installation?
What are the different types of serialization supported in .NET Framework...
The CLR uses which format for assembly version numbers ...
What tool is used to manage the GAC?
State True or False: A single .NET dll can contain unlimited classes: * True or * False?
State True or False: ASP.NET can currently run only on Windows Platform: * True or * False?
Which one of the following best describes “Type-Safe”
The number of objects in ASP.NET is ...
The code used to turn off buffering is * Buffering = false...
Can you have two applications on the same machine one which is using .NET Framework 1.1 and the other using 2.0 ?
Which of the following DOT.NET tools manages certificates, certificate trust lists (CTLs), and certificate revocation lists (CRLs)?
You need to generate a public/private key pair for using in creating a shared assembly. Given the above scenario, which .NET SDK utility should be used?
The object that contains all the properties and methods for every ASP.NET page, that is built is ..
In C#, which character is used to indicate a verbatim string literal?
Which of the following operators has the highest precedence?
The uniqueId that gets generated at the start of the Session is stored in ...
State True or False: C# supports multiple-inheritance: * True or * False?
Bitwise AND operator in C# is ...
Bitwise OR operator in C# is ...
What’s the .NET datatype that allows the retrieval of data by a unique key?
The keyword ‘int’ maps to one of the following .NET type ...
What can be achieved in IL which is not possible in C# ?
Which of the following is the correct code for setting a Session timeout of 30 minutes
The process that ASP.NET uses to keep track of Sessions without cookies is ..,
The method that transfers ASP.NET execution to another page, but returns to the original page when it is done is ...
A structure in C# can be derived from one or more ...
State True or False: Static method cannot be overridden: * True or * False
The Equivalent HTML Control for the <input type=”button”> tag is ..
The Equivalent Html Control for the <input type=”checkbox”> tag is
Which operator is used for connecting a event with a procedure in C#?
The Equivalent Html Control for the <select> tag is ...
State True or False: Events in Web forms are processed before the “Page Load” event: * True or * False
What namespaces are necessary to create a localized application?
A new server-side control can be created by implementing the class ___________
The parameter “clienttarget = downlevel” does one of the following ...
The methods in C# can be overloaded in which of the following ways
The RangeValidator control supports the following datatype ...
What is the difference between Convert.ToInt32 and int.Parse?
State True or False: Any ODBC-compliant database can be accessed through ASP.NET: * True or * False
A set of tables are maintained in a Dataset as ...
The namespaces needed to use data mechanisms in ASP.NET pages are...
What are the different methods to access Database in .NET ?
The two properties of a DataGrid that has to be specified to turn on sorting and paging respectively are ...
Which one of the following objects is used to create a foreign key between two DataTables?
The Syntax for data-binding expressions is ...
The method that need to be invoked on the DataAdapter control to load the generated dataset with data is
Which of the following operations can you NOT perform on an ADO.NET DataSet?
Which is the correct statement to set the alias name for namespace in C#?
The property that indicates whether existing database constraints should be observed when performing updates
If you set AutoGenerateColumns=True and still provide custom column definitions ...
The data from an XSL Transform with XmlReader can be returned in one of the following ways
Pick the command line that would result in the C# compiler generating an XML documentation file ...
What is the comment syntax for C#’s XML-based documentation?
When creating a C# Class Library project, what is the name of the supplementary file ...
Which of the following is the C# escape character for Null?
What is the exception that is thrown when there is an attempt to dynamically access a method that does not exist?
What method(s) must be used with the Application object to ensure that only one process accesses a variable at a time?
After capturing the SelectedIndexChanged event for a ListBox control, you find that the event handler doesn’t execute. What could the problem be?
What method must be overridden in a custom control?
What is used to validate complex string patterns like an e-mail address?
The following is a valid statement in ASP.NET<%@ Page Language="C" %>: * True or * False
A valid comment block in ASP.NET is ...
The event handlers that can be included in the Global.asax file are ...
A Few of the Namespaces that get imported by default in an ASPX file are ...
The Assemblies that can be referenced in an ASPX file without using @Assembly Directive is ...
An .ASHX file contains the following ...
What is the output for the following code snippet:..
One of the possible way of writing an ASP.NET handler that works like an ISAPI filter- that is ...
The ASP.NET directive that lets you cache different versions of a page based on varying input parameters ...
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?
What is the output for the below mentioned compilation command>csc /addmodule:A.Exe B.Cs
How can be the web application get configured with the following authorization rules ...
What will be the output of the following code snippet?
What will be output for the given code?