Dot net interview questions

#61607; .NET
- Difference between asp and asp.net
- How do you do exception management
- If you are using components in your application, how can you handle exceptions raised in a component
- How do you relate an aspx page with its code behind page
- What are the types of assemblies and where can u store them and how
- What is difference between value and reference types
- Is array reference type / value type - Is string reference type / value type
- What is differnce between machine.config and web.config
- What is shared and private assembly
- What are asynchronous callbacks
- How to write unmanaged code and how to identify whether the code is managed / unmanaged.
- How to authenticate users using web.config
- What is strong name and which tool is used for this
- What is gacutil.exe. Where do we store assemblies
- Should sn.exe be used before gacutil.exe
- What does assemblyinfo.cs file consists of
- What is boxing and unboxing
- Types of authentications in ASP.NET
- difference between Trace and Debug
- Difference between Dataset and DataReader
- What is custom tag in web.config
- How do you define authentication in web.Config
- What is sequence of code in retrieving data from database
- About DTS package
- What provider ADO.net use by default
- Where does web.config info stored? Will this be stored in the registry?
- How do you register the dotnet component or assembly?
- Difference between asp and asp.net
- Whis is stateless asp or asp.net?
- Authentication mechanism in dotnet
- State management in asp.net
- Types of values mode can hold session state in web.config
- About WebService
- What are Http handler
- What is view state and how this can be done and was this there in asp?
- Types of optimization and name a few and how do u do?
- About DataAdapters - Features of a dataset
- How do you do role based security
- Difference between Response.Expires and Expires.Absolute
- Types of object in asp
- About duration in caching technique
- Types of configuration files and ther differences
- Difference between ADO and ADO.net
- About Postback
- If you are calling three SPs from a window application how do u check for the performance of the SPS
- How do you manage session in ASP and ASP.NET
- How do you handle session management in ASP.NET and how do you implement them. How do you handle in case of SQLServer mode.
- What are different authentication types. How do you retreive user id in case of windows authentication
- For a server control, you need to have same properties like color maxlength, size, and allowed character throughout the application. How do
you handle this.
- What is custom control. What is the difference between custom control and user control
- What is the syntax for datagrid and specifying columns
- How do you add a javascript function for a link button in a datagrid.
- How to transpose rows into columns and columns into rows in a multi-dimensional array
- What are object oriented concepts
- How do you create multiple inheritance in C#
- ADO and ADO.NET differences
- Features and disadvantages of dataset
- What is the difference between and ActiveX dll and control
- How do you perform validations
- What is reflection and disadvantages of reflection
- What is boxing and how it is done internally
- Types of authentications in IIS
- What are the security issues if we send a query from the application
- Difference between ByVal and ByRef

- Disadvantages of COM components - How do we invoke queries from the application
- What is the provider and namespaces being used to access oracle database
- How do you load XML document and perform validation of the document
- How do you access elements in XML document - What is ODP.NET
- Types of session management in ASP.NET - Difference between datareader and dataset
- What are the steps in connecting to database - How do you register a .NET assembly
- Usage of web.config - About remoting and web services. Difference between them
- Caching techniques in .NET - About CLS and CTS
- Difference between .NET and previous version - Types of chaching. How to implement caching
- Features in ASP.NET
- How do you do validations. Whether client-side or server-side validations are better
- How do you implement multiple inheritance in .NET - Difference between multi-level and multiple inheritance
- Difference between dataset and datareader - What are runtime hosts
- What is an application domain - What is viewstate
- About CLR, reflection and assemblies - Difference between .NET components and COM components
- What does assemblyinfo.cs consists - Types of objects in ASP
- Write steps of retrieving data using ado.net - Call a stored procedure from ado.net and pass parameter to it
- Different type of validation controls in asp.net - Difference between server.Execute and response.redirect
- What is Response.Flush method - How Response.flush works in server.Execute
- What is the need of clinet side and server side validation - Tell About Global.asax
- What is application variable and when it is initialized - Tell About Web.config
- When web.config is called - How do you set language in web.cofig
- Difference between VB dll and assemblies in .NET - What is machine.config and web.config
- Tell about WSDL - About web methods and its various attributes
- What is manifest - Types of caching
- What does connection string consists of - What is the difference between session state and session variables
- How do you pass session values from one page to another - What are WSDL ports
- What is dataset and tell about its features. What are equivalent methods of previous, next etc. Of ADO in ADO.NET
- What is abstract class - What is difference between interface inheritance and class inheritance
- What are the collection classes - Which namespace is used for encryption
- What are the various authentication mechanisms in ASP.NET - What is the difference between authentication and autherization
- What are the types of threading models - How do you send an XML document from client to server
- How do you create dlls in .NET - What is inetermediate language in .NET
- What is CLR and how it generates native code
- Can we store PROGID informatoin in database and dynamically load the component
- Is VB.NET object oriented? What are the inheritances does VB.NET support.
- What is strong name and what is the need of it
- Any disadvantages in Dataset and in reflection - Advantage of vb.net over vb
- What is runtime host - How to send a DataReader as a parameter to a remote client
- How do you consume a webservice - What happens when a reference to webservice is added
- How do you reference to a private & shared assembly - What is the purpose of System.EnterpriseServices namespace
- About .Net remoting - Difference between remoting and webservice
- Types of statemanagement techniques - How to register a shared assembly
- About stateless and statefull webservice - How to invoke .net components from com components,give the sequence
- How to check null values in dataset - About how soap messages are sent and received in webservice
- Error handling and how this is done - Features in .net framework 1.1
- Any problem found in vs.et - Optimization technique description
- About disco and uddi - What providers does ado.net uses internally
- Disadvantages of vb - XML serialization
- What providers do you use to connect to oracle database? - What are various life cycle model in S/W development
- What is caching and types of caching - What does VS.NET contains
- What is JIT, what are types of JITS and their pupose - What is SOAP, UDDI and WSDL
- What is dataset - Types of threading models in VB.net
- Types of compatability in VB and their usage - Difference between CDATA and PCDATA in XML
- What is Assync in XML api which version of XML parser u worked with - Types of ASP objects
- Difference between application and session - What is web application virtual directory
- Can two web application share a session and application variable
- If i have a page where i create an instance of a dll and without invoking any method can I send values to next page
- Diffeernce between Active Exe and /Dll - Can the dictionary object be created in client’s ccope?
- About MTS and it’s purpose - About writting a query and SP which is better
- I have a component with 3 parameter and deployed to client side now i changed my dll method which takes 4 parameter.How can i deploy
this without affecting the clent’s code
- How do you do multithreading application in VB - About Global .asax
- Connection pooling in MTS - If cookies is disabled in clinet browser will session work
- About XLST - How do you attach an XSL to an XML in presenting output
- What is XML - How do you make your site SSL enabled
- Did you work on IIS administration - About response.buffer and repsonse.flush

- About dataset and data mining - About SOAP
- Usage of htmlencode and urlencode - Usage of server variables
- How to find the client browser type - How do you trap errors in ASP and how do you invoke a component in ASP
- Define .NET architecture - Where does ADO.NET and XML web services come in the architecture
- What is MSIL code - Types of JIT and what is econo-JIT
- What is CTS, CLS and CLR - Uses of CLR
- What are webservices, its attributes. Where they are available - What is UDDI and how to register a web service
- Without UDDI, is it possible to access a remote web service - How a web service is exposed to outside world
- What is boxing and unboxing - What is WSDL and disco file
- What is web.config and machine.config - What is difference between ASP and ASP.NET
- What is dataset and uses of dataset - What does ADO.NET consists of?
- What are various authentication mechanisms in ASP.NET
- What do you mean by passport authentication and windows authentication
- What is an assembly and what does manifest consists - What is strong name and what is the purpose of strong name
- What are various types of assemblies - Difference between VB.NET and C#. Which is faster
- Types of caching - How WSDL is stored
- What is the key feature of ADO.NET compared to ADO - How does dataset acts in a disconnected fashion
- Does the following statement executes successfully: Response.Write(“value of i = ” + i);
- What is ODP.NET - What are the providers available with VS.NET
- What is a process - What is binding in web service
- How a proxy is generated for a web service - About delegates
- What are static assemblies and dynamic assemlies. Differences between them
- Any disadvantages in Dataset and in reflection - Difference between Active Exe and Activex dll
- Can we make activex dll also ti execute in some process as that of client ? How can we do?
- Types of compatabilities and explain them
- Types of instancing properties and explain each. Tell the difference between multiuse,singleuse and globalmultiuse and which is default
- What is assembly?
- Difference between COM and .NET component
- What happens when we instantiate a COM component - What happens when we instantiate a .NET component
- Are you aware of containment and Aggregation - What is UUID and GUID what is the size of this ID?
- About Iunknown interface Queue ,its methods Querry Interface Addref,Release and Explane each
- What ‘ll u do in early and late binding
- In early binding will the method invoked on com component will verify it’s existance in the system or not?
- Difference between dynamic query and static query
- About performance issues on retrieving records - About ADO and its objects
- What is unmannaged code and will CLR handle this kind of code or not .
- Garbage collector’s functionality on unmanaged code
- If Instancing = Single use for ActiveX Exe, how will this be executed if there are 2 consecutive client requests ?
- Threading Types. - How about the security in Activex DLL and Activex EXE
- About Assembly in .NET, types of assemblies, their difference, How to register into GAC. How to generate the strong names & its use.
- What is side by side Execution? - What is serialization?
- Life cycle of ASP.NET page when a request is made.
- If there is submit button in a from tell us the sequence what happens if submit is clicked and in form action is specified as some other page.
- About a class access specifiers and method access specifiers.
- About .NET Remoting and types of remoting - About Virtual functions and their use.
- About ado.net components/objects. Usage of data adapters and tell the steps to retrieve data.
- What does CLR do as soon as an assembly is created - How do you retrieve information from web.config.
- How do you declare delegates and are delegates and events one and the same and explain how do you declare delegates and invoke them.
- If I want to override a method 1 of class A and in class b then how do you declare?
- What does CLR do after the IL is generated and machine language is generated .Will it look for main method
- About friend and Protected friend - About multi level and multiple inheritance how to achieve in .net
- Sequence to connect and retrieve data from database useig dataset
- About sn.exe
- What was the problem in traditional component why side by side execution is supported in .net
- How .net assemblies are registred as private and shared assembly
- All kind of access specifiers for a class and for methods - On ODP.net
- Types of assemblies that can be created in dotnet
- About namespaces - OOPs concept
- More on CLR
#61607; Database
- What is normalization
- What is an index and types of indexes. How many number of indexes can be used per table
- What is a constraint. Types of constraints - What are code pages
- What is referential integrity - What is a trigger
- What are different types of joins - What is a self join
- Authentication mechanisms in Sql Server - What are user defined stored procedures.
- What is INSTEAD OF trigger - Difference between SQL server 7.0 and 2000

- Usage of DTS - How to disable an index using select query
- Is non-clustered index faster than clustered index - Types of optimization in querries
- Difference between ISQL and OSQL
- How you log an exception directly into sql server what is used for this - About Replication in Database
- What is the default optimization done in oracle and sql server - How can i make a coulmn as unique
- How many no of tables can be joined in same sql server - How many coulmns can exist per table
- About Sql Profiler usage0 - What is E-R diagram
- Draw E-R diagram for many to many relationship
- Design databaseraw er diagram for a certain scenario(many author many books)
- Diff between primary key and unique key - What is Normalization and types of Normalization
- Difference between sub query and nested query - Indexes in oracle
- Querry to retrieve record for a many to many relationship - Querry to get max and second max in oracle in one querry
- Querry How do you get all records from 2 tables. Which join do you use
- How to optimize a query that retrieves data by joining 4 tables - Write a query to get 2nd maximum salary in an employee table
- Write a simple Store procedure and pass parameter to it - How do you handle exceptions. Give the syntax for it
- What is normalization and Types of optimization - Difference between inline query and stored procedure
- Difference between writing SQL query and stored procedure - About DTS usage
- Types of locks in database
- Types of indexes. What is the default key created when a primary key is created in a table
- What is clustered, non-clustured and unique index. How many indexes can be created on a table
- Can we create non-clustured index on a clustered index
- What is difference between triggers and stored procedures. And advantages of SP over triggers
- What is DTS and purpose of DTS - Types of joins.
- What are nested triggers - What is a heap related to database
- Types of cursors and explanation each of them - Types of cursor locations and explanation on each of them
- Types of cursor locks and explanation each of them
- How do you retrieve set of records from database server.{Set max records = 100 & use paging where pager page no or records = 10 & after
displaying 100 records again connect to database retrieve next 100 }
- When would you denormalize Ans: when data are scattered in table & require long time to execute query then we need normalization.
- Types of backups Ans: Full Backup, Incremental Backup, Differential Backup, Mirror Backup
- What are the types of triggers Ans: Before and After, Row and Table, Insert and Update and Delete
- What are the blocks in stored procedure Ans: Function Blocks are in Stored Procedure
- About types of indexes in SQL server Ans: Clustered & Non-Clustered
- How do you optimize Sql queries Ans: using Normalization
• HR & Project
- About yourself - About work experience - How long you are working on .NET
- What are your weaknesses / areas of improvement - Have you done database design / development
- What is D in ACID - About procsses followed - What is SOAP and why it is required
- About effort estimation - Why are looking for a change - Do you think CMM process takes time
- About expertise
- What type of job you are expecting - What is current and expected is it negotiable
#61607; General
- What are sequence diagrams, collaboration diagrams and difference between them
- What is your role in the current project and what kinds of responsibilites you are handling
- What is the team size and how do you ensure quality of code
- What is the S/W model used in the project. What are the optimization techniques used. Give examples.
- What are the SDLC phases you have involved
#61607; Project related
- How often you communicate with the client - For what purposes, you communicate with the client
- What is the process followed - Explain complete process followed for the development
- What is the life cycle model used for the development - How do you say you are having excellent team management skills
- If your client gives a change and asks for early delivery. How will you manage.
- How will gather requirements and where do you record. Is it in word / Excel or do you have any tool for that
- What is the stage when code is delivered to the client and he is testing it.
- What are the different phases of SDLC
- How do you handle change requests - How do you perform impact analysis
- How do you write unit test cases. - About current project architecture

Dot net interview questions

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Dot net interview questions