Wednesday, February 6, 2008

Interview questions

References :
Caching Concepts
What is application object ?
What’s the difference between Cache object and application object ?
How can get access to cache object ?
What are dependencies in cache and types of dependencies ?
Can you show a simple code showing file dependency in cache ?
What is Cache Callback in Cache ?
What is scavenging ?
What are different types of caching using cache object of ASP.NET?
How can you cache different version of same page using ASP.NET cache object ?
How will implement Page Fragment Caching ?
What are ASP.NET session and compare ASP.NET session with classic ASP session
Which various modes of storing ASP.NET session ?
Is Session_End event supported in all session modes ?
What are the precautions you will take in order that StateServer Mode work properly ?
What are the precautions you will take in order that SQLSERVER Mode work properly ?
Where do you specify session state mode in ASP.NET ?
What are the other ways you can maintain state ?
What are benefits and Limitation of using Hidden fields ?
What is ViewState ?
Do performance vary for viewstate according to User controls ?
What are benefits and Limitation of using Viewstate for state management?
How an you use Hidden frames to cache client data ?
What are benefits and Limitation of using Hidden frames?
What are benefits and Limitation of using Cookies?
What is Query String and What are benefits and Limitation of using Query Strings?

What is Object Oriented Programming ?
What’s a Class ?
What’s a Object ?
What’s the relation between Classes and Objects ?
What are different properties provided by Object-oriented systems ?
Twist :- Can you explain different properties of Object Oriented Systems?
Twist :- What’s difference between Association , Aggregation and Inheritance relationships?
How can we acheive inheritance in VB.NET ?
What are abstract classes ?
What’s a Interface ?
What is difference between abstract classes and interfaces?
What is a delegate ?
What are event’s ?
Do events have return type ?
Can event’s have access modifiers ?
Can we have shared events ?
What is shadowing ?
What’s difference between Shadowing and Overriding ?
What’s difference between delegate and events?
If we inherit a class do the private variables also get inherited ?
What are different accessibility levels defined in .NET ?
Can you prevent a class from overriding ?
What’s the use of “MustInherit” keyword in VB.NET ?
Why can not you specify accessibility modifier in Interface ?
What are similarities between Class and structure ?
What’s the difference between Class and structure’s ?
What does virtual keyword mean ?
What are shared (VB.NET)/Static(C#) variables?
What is Dispose method in .NET ?
Whats the use of “OverRides” and “Overridable” keywords ?
Where are all .NET Collection classes located ?
What is ArrayList ?
What’s a HashTable ?
Twist :- What’s difference between HashTable and ArrayList ?
What are queues and stacks ?
What is ENUM ?
What is nested Classes ?
What’s Operator Overloading in .NET?
In below sample code if we create a object of class2 which constructor will fire first ?
What’s the significance of Finalize method in .NET?
Why is it preferred to not use finalize for clean up?
How can we suppress a finalize method?
What’s the use of DISPOSE method?
How do I force the Dispose method to be called automatically, as clients can forget to call
Dispose method?
In what instances you will declare a constructor to be private?
Can we have different access modifiers on get/set methods of a property ?
If we write a goto or a return statement in try and catch block will the finally block
execute ?
What is Indexer ?
Can we have static indexer in C# ?
In a program there are multiple catch blocks so can it happen that two catch blocks are
executed ?
What is the difference between System.String and System.StringBuilder classes?

What’s the sequence in which ASP.NET events are processed ?
In which event are the controls fully loaded ?
How can we identify that the Page is PostBack ?
How does ASP.NET maintain state in between subsequent request ?
What is event bubbling ?
How do we assign page specific attributes ?
Administrator wants to make a security check that no one has tampered with ViewState
, how can he ensure this ? 153
What’s the use of @ Register directives ?
What’s the use of SmartNavigation property ?
What is AppSetting Section in “Web.Config” file ?
Where is ViewState information stored ?
What’s the use of @ OutputCache directive in ASP.NET?
How can we create custom controls in ASP.NET ?
How many types of validation controls are provided by ASP.NET ?
Can you explain what is “AutoPostBack” feature in ASP.NET ?
How can you enable automatic paging in DataGrid ?
What’s the use of “GLOBAL.ASAX” file ?
What’s the difference between “Web.config” and “Machine.Config” ?
What’s a SESSION and APPLICATION object ?
What’s difference between Server.Transfer and response.Redirect ?
What’s difference between Authentication and authorization?
What is impersonation in ASP.NET ?
Can you explain in brief how the ASP.NET authentication process works?
What are the various ways of authentication techniques in ASP.NET?
How does authorization work in ASP.NET?
What’s difference between Datagrid , Datalist and repeater ?
From performance point of view how do they rate ?
What’s the method to customize columns in DataGrid?
How can we format data inside DataGrid?
How will decide the design consideration to take a Datagrid , datalist or repeater ?
Difference between ASP and ASP.NET?
What are major events in GLOBAL.ASAX file ?
What order they are triggered ?
Do session use cookies ?
How can we force all the validation control to run ?
How can we check if all the validation control are valid and proper ?
If you have client side validation is enabled in your Web page , Does that mean server
side code is not run?
Which JavaScript file is referenced for validating the validators at the client side ?
How to disable client side script in validators?
I want to show the entire validation error message in a message box on the client side?
You find that one of your validation is very complicated and does not fit in any of the
validators , so what will you do ?
What is Tracing in ASP.NET ?
How do we enable tracing ?
What exactly happens when ASPX page is requested from Browser?
How can we kill a user session ?
How do you upload a file in ASP.NET ?
How do I send email message from ASP.NET ?
What are different IIS isolation levels?
ASP used STA threading model , whats the threading model used for ASP.NET ?
Whats the use of <%@ page aspcompat=true %> attribute ?
Explain the differences between Server-side and Client-side code?
Can you explain Forms authentication in detail ?
How do I sign out in forms authentication ?
If cookies are not enabled at browser end does form Authentication work?
How to use a checkbox in a datagrid?
What are the steps to create a windows service in VB.NET ?
What’s the difference between “Web farms” and “Web garden”?
How do we configure “WebGarden”?
What is the main difference between Gridlayout and FlowLayout ?

.NET Architecture
What are design patterns ?
What’s difference between Factory and Abstract Factory Pattern’s?
What’s MVC pattern?
Twist: - How can you implement MVC pattern in ASP.NET?
How can we implement singleton pattern in .NET?
How do you implement prototype pattern in .NET?
Twist: - How to implement cloning in .NET ? , What is shallow copy and deep copy ?
What are the situations you will use a Web Service and Remoting in projects?
Can you give a practical implementation of FAÇADE patterns?
How can we implement observer pattern in .NET?
What is three tier architecture?
Have you ever worked with Microsoft Application Blocks, if yes then which?
What is Service Oriented architecture?
What are different ways you can pass data between tiers?
What is Windows DNA architecture?
What is aspect oriented programming?

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