.Net Deployment Interview Preparation Guide
Optimize your .Net Deployment interview preparation with our curated set of 24 questions. These questions will test your expertise and readiness for any .Net Deployment interview scenario. Ideal for candidates of all levels, this collection is a must-have for your study plan. Access the free PDF to get all 24 questions and give yourself the best chance of acing your .Net Deployment interview. This resource is perfect for thorough preparation and confidence building.24 .Net Deployment Questions and Answers:
1 :: How Viewstate is being formed and how it is stored on client in .NET?
The type of ViewState is System.Web.UI.StateBag, which is a dictionary that stores name/value pairs. ViewState is persisted to a string variable by the ASP.NET page framework and sent to the client and back as a hidden variable. Upon postback, the page framework parses the input string from the hidden variable and populates the ViewState property of each control. If a control uses ViewState for property data instead of a private field, that property automatically will be persisted across round trips to the client. (If a property is not persisted in ViewState, it is good practice to return its default value on postback.)
2 :: ASP.NET interview questions?
1. What is a static class?
2. What is static member?
3. What is static function?
4. What is static constructor?
5. How can we inherit a static variable?
6. How can we inherit a static member?
7. Can we use a static function with a non-static variable?
8. How can we access static variable?
9. Why main function is static?
10. How will you load dynamic assembly? How will create assesblies at run time?
11. What is Reflection?
12. If I have more than one version of one assemblies, then how will I use old version (how/where to specify version number?) in my application?
13. How do you create threading in.NET? What is the namespace for that?
14. What do you mean by Serialize and MarshalByRef?
15. What is the difference between Array and LinkedList?
16. What is Asynchronous call and how it can be implemented using delegates?
17. How to create events for a control? What is custom events? How to create it?
18. If you want to write your own dot net language, what steps you will you take care?
19. Describe the diffeerence between inline and code behind - which is best in a loosely coupled solution?
20. How dot net compiled code will become platform independent?
21. Without modifying source code if we compile again, will it be generated MSIL again?
22. How does you handle this COM components developed in other programming languages in.NET?
23. How CCW (Com Callable Wrapper) and RCW (Runtime Callable Wrappers) works?
24. What are the new thee features of COM+ services, which are not there in COM (MTS)?
25. What are the differences between COM architecture and.NET architecture?
26. Can we copy a COM dll to GAC folder?
27. What is Shared and Repeatable Inheritance?
28. Can you explain what inheritance is and an example of when you might use it?
29. How can you write a class to restrict that only one object of this class can be created (Singleton class)?
30. What are virtual destructures?
31. What is close method? How its different from Finalize and Dispose?
32. What is Boxing and UnBoxing?
33. What is check/uncheck?
34. What is the use of base keyword? Tell me a practical example for base keyword’s usage?
35. What are the different.NET tools which you used in projects?
36. What will do to avoid prior case?
37. What happens when you try to update data in a dataset in.NET while the record is already deleted in SQL Server as backend?
38. What is concurrency? How will you avoid concurrency when dealing with dataset?
39. One user deleted one row after that another user through his dataset was trying to update same row. What will happen? How will you avoid this problem?
40. How do you merge two datasets into the third dataset in a simple manner?
41. If you are executing these statements in commandObject. “Select * from Table1; Select * from Table2? How you will deal result set? 42. How do you sort a dataset.
43. If a dataset contains 100 rows, how to fetch rows between 5 and 15 only?
44. What is the use of Parameter object?
45. How to generateXML from a dataset and vice versa?
46. How do you implement locking concept for dataset?
47. How will you do Redo and Undo in TextBox control?
48. How to implement DataGrid in.NET? How would you make a combo-box appear in one column of a DataGrid? What are the ways to show data grid inside a data grid for a master details type of tables? If we write any code for DataGrid methods. what is the access specifier used for that methods in the code behind file and why?
49. How can we create Tree control in asp.NET?
50. Write a program in C# to find the angle between the hours and minutes in a clock?
51. Write a program to create a user control with name and surname as data members and login as method and also the code to call it.
52. How can you read 3rd line from a text file?
53. Explain the code behind wors and contrast that using the inline style.
54. Explain different types of HTML, Web and server controls.
55. What are the differences between user control and server control?
56. How server form post-back works?
57. Can the action attribute of a server-side tag be set to a value and if not how can you possibly pass data from a form page to a subsequent page?
58. How would ASP and ASP.NET apps run at the same time on the same server?
59. What are good ADO.NET object to replace to ADO Recordset object.
60. Explain the differences between Server-side code and Client-side code.
61. What type of code(server or client) is found in a Code-Behind class?
62. Should validation (did the user enter a real date) occur server-side or client-side? Why?
63. What does the “EnableViewState” property do? Why would I want it on or off?
64. What is the difference between Server.Transfer and response.Redirect? Why?
65. Can you give an example of when it would be appropriate to use a web service as opposed to a non-serviced.NET component?
66. Let’s say I have an existing application written using VB6 and this application utilizes Windows 2000 COM+ transaction services. How would you approach migrating this application to.NET?
67. If I am developing an application that must accomodate 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?
68. What are ASP.NET web forms? How is this technology different than what is available though ASP(1.0-3.0)?
69. How does VB.NET achieve polymorphism?
70. How does C# achieve polymorphism?
71. Can you explain what is Inheritance and an example in VB.NET and C# of when you might use it?
72. Describe difference between inline and code-behind?
73. What is loosely coupled solution in.NET?
74. What is diffgram?
75. Where would you use an iHTTPModule and what are the limitations of any approach you might take in implementing one?
76. What are the Advantages and DisAdvantages of viewstate?
77. Describe session handling in a webform, how does it work and what are the limitations?
78. How would you get ASP.NET running in Apache web servers? Explain it’s limitations.
79. What is MSIL and why should my developers need an appreciation of it if at all?
80. Which methos do you invoke on the DataAdapter control to load your generated dataset with data?
81. Can you edit data in Repeater control? How?
82. Which template must you provide, in order to display data in a Repeater control?
83. How can you provide an alternating color scheme in a Repeater control?
84. 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?
85. What base class do all web forms inherit from?
86. What method do you use to explicitly kill a user’s session? How?
87. How do you turn off cookies for one page in your site? Give an example.
88. Which two properties are on every validation control?
89. What tags do you need to add within the asp:datagrid tags to bind columns manually? Give an example.
90. How do you create a permanent cookie?
91. What tag do you use to add a hyperlink column to the dataGrid?
92. What is the standard you use to wrap up a call to a Web Service?
93. Which method do you use to redirect the user to another page without performing a round trip to the client? How?
94. What is the transport protocol you use to call a Seb Service SOAP?
95. What does WSDL stand for?
96. What property do you have to set to tell the grid which page to go to when using the Pager object?
97. Where on the Internet would you look for Web Services?
98. What tags do you need to add within the asp:datagrid tags to bind columns manually? How?
99. 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?
100. How is a property designated as read-only?
101. Which control would you use if you needed to make sure the values in two different controls matched?
111. Differences between DLL and EXE?
112. Can an assembly have EXE?
113. Can a DLL be changed to an EXE?
114.. Compare & contrast rich client (smart clients or Windows-based) & browser-based Web application
115. Compare Client server application with n-Tier application
116.. Can a try block have more than one catch block?
117. Can a try block have nested try blocks?
118. How do you load an assembly at runtime?
119. If I am writing in a language like VB or C++, what are the procedures to be followed to support .NET?
120. How do you view the methods and members of a DLL?
121. What is shadowing?
122. What are the collections you’ve used?
123. What’s the use of formatters in .NET?
124. How is Threading done in .NET?
125. Differences between Namespace, Class, Assembly?
2. What is static member?
3. What is static function?
4. What is static constructor?
5. How can we inherit a static variable?
6. How can we inherit a static member?
7. Can we use a static function with a non-static variable?
8. How can we access static variable?
9. Why main function is static?
10. How will you load dynamic assembly? How will create assesblies at run time?
11. What is Reflection?
12. If I have more than one version of one assemblies, then how will I use old version (how/where to specify version number?) in my application?
13. How do you create threading in.NET? What is the namespace for that?
14. What do you mean by Serialize and MarshalByRef?
15. What is the difference between Array and LinkedList?
16. What is Asynchronous call and how it can be implemented using delegates?
17. How to create events for a control? What is custom events? How to create it?
18. If you want to write your own dot net language, what steps you will you take care?
19. Describe the diffeerence between inline and code behind - which is best in a loosely coupled solution?
20. How dot net compiled code will become platform independent?
21. Without modifying source code if we compile again, will it be generated MSIL again?
22. How does you handle this COM components developed in other programming languages in.NET?
23. How CCW (Com Callable Wrapper) and RCW (Runtime Callable Wrappers) works?
24. What are the new thee features of COM+ services, which are not there in COM (MTS)?
25. What are the differences between COM architecture and.NET architecture?
26. Can we copy a COM dll to GAC folder?
27. What is Shared and Repeatable Inheritance?
28. Can you explain what inheritance is and an example of when you might use it?
29. How can you write a class to restrict that only one object of this class can be created (Singleton class)?
30. What are virtual destructures?
31. What is close method? How its different from Finalize and Dispose?
32. What is Boxing and UnBoxing?
33. What is check/uncheck?
34. What is the use of base keyword? Tell me a practical example for base keyword’s usage?
35. What are the different.NET tools which you used in projects?
36. What will do to avoid prior case?
37. What happens when you try to update data in a dataset in.NET while the record is already deleted in SQL Server as backend?
38. What is concurrency? How will you avoid concurrency when dealing with dataset?
39. One user deleted one row after that another user through his dataset was trying to update same row. What will happen? How will you avoid this problem?
40. How do you merge two datasets into the third dataset in a simple manner?
41. If you are executing these statements in commandObject. “Select * from Table1; Select * from Table2? How you will deal result set? 42. How do you sort a dataset.
43. If a dataset contains 100 rows, how to fetch rows between 5 and 15 only?
44. What is the use of Parameter object?
45. How to generateXML from a dataset and vice versa?
46. How do you implement locking concept for dataset?
47. How will you do Redo and Undo in TextBox control?
48. How to implement DataGrid in.NET? How would you make a combo-box appear in one column of a DataGrid? What are the ways to show data grid inside a data grid for a master details type of tables? If we write any code for DataGrid methods. what is the access specifier used for that methods in the code behind file and why?
49. How can we create Tree control in asp.NET?
50. Write a program in C# to find the angle between the hours and minutes in a clock?
51. Write a program to create a user control with name and surname as data members and login as method and also the code to call it.
52. How can you read 3rd line from a text file?
53. Explain the code behind wors and contrast that using the inline style.
54. Explain different types of HTML, Web and server controls.
55. What are the differences between user control and server control?
56. How server form post-back works?
57. Can the action attribute of a server-side tag be set to a value and if not how can you possibly pass data from a form page to a subsequent page?
58. How would ASP and ASP.NET apps run at the same time on the same server?
59. What are good ADO.NET object to replace to ADO Recordset object.
60. Explain the differences between Server-side code and Client-side code.
61. What type of code(server or client) is found in a Code-Behind class?
62. Should validation (did the user enter a real date) occur server-side or client-side? Why?
63. What does the “EnableViewState” property do? Why would I want it on or off?
64. What is the difference between Server.Transfer and response.Redirect? Why?
65. Can you give an example of when it would be appropriate to use a web service as opposed to a non-serviced.NET component?
66. Let’s say I have an existing application written using VB6 and this application utilizes Windows 2000 COM+ transaction services. How would you approach migrating this application to.NET?
67. If I am developing an application that must accomodate 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?
68. What are ASP.NET web forms? How is this technology different than what is available though ASP(1.0-3.0)?
69. How does VB.NET achieve polymorphism?
70. How does C# achieve polymorphism?
71. Can you explain what is Inheritance and an example in VB.NET and C# of when you might use it?
72. Describe difference between inline and code-behind?
73. What is loosely coupled solution in.NET?
74. What is diffgram?
75. Where would you use an iHTTPModule and what are the limitations of any approach you might take in implementing one?
76. What are the Advantages and DisAdvantages of viewstate?
77. Describe session handling in a webform, how does it work and what are the limitations?
78. How would you get ASP.NET running in Apache web servers? Explain it’s limitations.
79. What is MSIL and why should my developers need an appreciation of it if at all?
80. Which methos do you invoke on the DataAdapter control to load your generated dataset with data?
81. Can you edit data in Repeater control? How?
82. Which template must you provide, in order to display data in a Repeater control?
83. How can you provide an alternating color scheme in a Repeater control?
84. 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?
85. What base class do all web forms inherit from?
86. What method do you use to explicitly kill a user’s session? How?
87. How do you turn off cookies for one page in your site? Give an example.
88. Which two properties are on every validation control?
89. What tags do you need to add within the asp:datagrid tags to bind columns manually? Give an example.
90. How do you create a permanent cookie?
91. What tag do you use to add a hyperlink column to the dataGrid?
92. What is the standard you use to wrap up a call to a Web Service?
93. Which method do you use to redirect the user to another page without performing a round trip to the client? How?
94. What is the transport protocol you use to call a Seb Service SOAP?
95. What does WSDL stand for?
96. What property do you have to set to tell the grid which page to go to when using the Pager object?
97. Where on the Internet would you look for Web Services?
98. What tags do you need to add within the asp:datagrid tags to bind columns manually? How?
99. 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?
100. How is a property designated as read-only?
101. Which control would you use if you needed to make sure the values in two different controls matched?
111. Differences between DLL and EXE?
112. Can an assembly have EXE?
113. Can a DLL be changed to an EXE?
114.. Compare & contrast rich client (smart clients or Windows-based) & browser-based Web application
115. Compare Client server application with n-Tier application
116.. Can a try block have more than one catch block?
117. Can a try block have nested try blocks?
118. How do you load an assembly at runtime?
119. If I am writing in a language like VB or C++, what are the procedures to be followed to support .NET?
120. How do you view the methods and members of a DLL?
121. What is shadowing?
122. What are the collections you’ve used?
123. What’s the use of formatters in .NET?
124. How is Threading done in .NET?
125. Differences between Namespace, Class, Assembly?
3 :: Explain Attributes in dot NET?
Attributes are declarative tags in code that insert additional metadata into an assembly. There exist two types of attributes in the .NET Framework: Predefined attributes such as Assembly Version, which already exist and are accessed through the Runtime Classes; and custom attributes, which you write yourself by extending the System.Attribute class.
4 :: What is typical about a Windows process in regards to memory allocation in dot NET?
Each process is allocated its own block of available RAM space, no process can access another process’ code or data. If the process crashes, it dies alone without taking the entire OS or a bunch of other applications down.
5 :: What is your Observations between VB.NET and VC#.NET?
Choosing a programming language depends on your language experience and the scope of the application you are building. While small applications are often created using only one language, it is not uncommon to develop large applications using multiple languages.
For example, if you are extending an application with existing XML Web services, you might use a scripting language with little or no programming effort. For client-server applications, you would probably choose the single language you are most comfortable with for the entire application. For new enterprise applications, where large teams of developers create components and services for deployment across multiple remote sites, the best choice might be to use several languages depending on developer skills and long-term maintenance expectations.
The .NET Platform programming languages - including Visual Basic .NET, Visual C#, and Visual C++ with managed extensions, and many other programming languages from various vendors - use .NET Framework services and features through a common set of unified classes. The .NET unified classes provide a consistent method of accessing the platform's functionality. If you learn to use the class library, you will find that all tasks follow the same uniform architecture. You no longer need to learn and master different API architectures to write your applications.
The .NET Platform programming languages - including Visual Basic .NET, Visual C#, and Visual C++ with managed extensions, and many other programming languages from various vendors - use .NET Framework services and features through a common set of unified classes. The .NET unified classes provide a consistent method of accessing the platform's functionality. If you learn to use the class library, you will find that all tasks follow the same uniform architecture. You no longer need to learn and master different API architectures to write your applications.
In most situations, you can effectively use all of the Microsoft programming languages. Nevertheless, each programming language has its relative strengths and you will want to understand the features unique to each language. The following sections will help you choose the right programming language for your application.
Visual Basic .NET
Visual Basic .NET is the next generation of the Visual Basic language from Microsoft. With Visual Basic you can build .NET applications, including Web services and ASP.NET Web applications, quickly and easily. Applications made with Visual Basic are built on the services of the common language runtime and take advantage of the .NET Framework.
Visual Basic has many new and improved features such as inheritance, interfaces, and overloading that make it a powerful object-oriented programming language. Other new language features include free threading and structured exception handling. Visual Basic fully integrates the .NET Framework and the common language runtime, which together provide language interoperability, garbage collection, enhanced security, and improved versioning support. A Visual Basic support single inheritance and creates Microsoft intermediate language (MSIL) as input to native code compilers.
Visual Basic is comparatively easy to learn and use, and Visual Basic has become the programming language of choice for hundreds of thousands of developers over the past decade. An understanding of Visual Basic can be leveraged in a variety of ways, such as writing macros in Visual Studio and providing programmability in applications such as Microsoft Excel, Access, and Word.
Visual Basic provides prototypes of some common project types, including:
• Windows Application.
• Class Library.
• Windows Control Library.
• ASP.NET Web Application.
• ASP.NET Web Service.
• Web Control Library.
• Console Application.
• Windows Service.
• Windows Service.
Visual C# .NET
Visual C# (pronounced C sharp) is designed to be a fast and easy way to create .NET applications, including Web services and ASP.NET Web applications. Applications written in Visual C# are built on the services of the common language runtime and take full advantage of the .NET Framework.
C# is a simple, elegant, type-safe, object-oriented language recently developed by Microsoft for building a wide range of applications. Anyone familiar with C and similar languages will find few problems in adapting to C#. C# is designed to bring rapid development to the C++ programmer without sacrificing the power and control that are a hallmark of C and C++. Because of this heritage, C# has a high degree of fidelity with C and C++, and developers familiar with these languages can quickly become productive in C#. C# provides intrinsic code trust mechanisms for a high level of security, garbage collection, and type safety. C# supports single inheritance and creates Microsoft intermediate language (MSIL) as input to native code compilers.
C# is fully integrated with the .NET Framework and the common language runtime, which together provide language interoperability, garbage collection, enhanced security, and improved versioning support. C# simplifies and modernizes some of the more complex aspects of C and C++, notably namespaces, classes, enumerations, overloading, and structured exception handling. C# also eliminates C and C++ features such as macros, multiple inheritance, and virtual base classes. For current C++ developers, C# provides a powerful, high-productivity language alternative.
Visual C# provides prototypes of some common project types, including:
• Windows Application.
• Class Library.
• Windows Control Library.
• ASP.NET Web Application.
• ASP.NET Web Service.
• Web Control Library.
• Console Application.
• Windows Service.
For example, if you are extending an application with existing XML Web services, you might use a scripting language with little or no programming effort. For client-server applications, you would probably choose the single language you are most comfortable with for the entire application. For new enterprise applications, where large teams of developers create components and services for deployment across multiple remote sites, the best choice might be to use several languages depending on developer skills and long-term maintenance expectations.
The .NET Platform programming languages - including Visual Basic .NET, Visual C#, and Visual C++ with managed extensions, and many other programming languages from various vendors - use .NET Framework services and features through a common set of unified classes. The .NET unified classes provide a consistent method of accessing the platform's functionality. If you learn to use the class library, you will find that all tasks follow the same uniform architecture. You no longer need to learn and master different API architectures to write your applications.
The .NET Platform programming languages - including Visual Basic .NET, Visual C#, and Visual C++ with managed extensions, and many other programming languages from various vendors - use .NET Framework services and features through a common set of unified classes. The .NET unified classes provide a consistent method of accessing the platform's functionality. If you learn to use the class library, you will find that all tasks follow the same uniform architecture. You no longer need to learn and master different API architectures to write your applications.
In most situations, you can effectively use all of the Microsoft programming languages. Nevertheless, each programming language has its relative strengths and you will want to understand the features unique to each language. The following sections will help you choose the right programming language for your application.
Visual Basic .NET
Visual Basic .NET is the next generation of the Visual Basic language from Microsoft. With Visual Basic you can build .NET applications, including Web services and ASP.NET Web applications, quickly and easily. Applications made with Visual Basic are built on the services of the common language runtime and take advantage of the .NET Framework.
Visual Basic has many new and improved features such as inheritance, interfaces, and overloading that make it a powerful object-oriented programming language. Other new language features include free threading and structured exception handling. Visual Basic fully integrates the .NET Framework and the common language runtime, which together provide language interoperability, garbage collection, enhanced security, and improved versioning support. A Visual Basic support single inheritance and creates Microsoft intermediate language (MSIL) as input to native code compilers.
Visual Basic is comparatively easy to learn and use, and Visual Basic has become the programming language of choice for hundreds of thousands of developers over the past decade. An understanding of Visual Basic can be leveraged in a variety of ways, such as writing macros in Visual Studio and providing programmability in applications such as Microsoft Excel, Access, and Word.
Visual Basic provides prototypes of some common project types, including:
• Windows Application.
• Class Library.
• Windows Control Library.
• ASP.NET Web Application.
• ASP.NET Web Service.
• Web Control Library.
• Console Application.
• Windows Service.
• Windows Service.
Visual C# .NET
Visual C# (pronounced C sharp) is designed to be a fast and easy way to create .NET applications, including Web services and ASP.NET Web applications. Applications written in Visual C# are built on the services of the common language runtime and take full advantage of the .NET Framework.
C# is a simple, elegant, type-safe, object-oriented language recently developed by Microsoft for building a wide range of applications. Anyone familiar with C and similar languages will find few problems in adapting to C#. C# is designed to bring rapid development to the C++ programmer without sacrificing the power and control that are a hallmark of C and C++. Because of this heritage, C# has a high degree of fidelity with C and C++, and developers familiar with these languages can quickly become productive in C#. C# provides intrinsic code trust mechanisms for a high level of security, garbage collection, and type safety. C# supports single inheritance and creates Microsoft intermediate language (MSIL) as input to native code compilers.
C# is fully integrated with the .NET Framework and the common language runtime, which together provide language interoperability, garbage collection, enhanced security, and improved versioning support. C# simplifies and modernizes some of the more complex aspects of C and C++, notably namespaces, classes, enumerations, overloading, and structured exception handling. C# also eliminates C and C++ features such as macros, multiple inheritance, and virtual base classes. For current C++ developers, C# provides a powerful, high-productivity language alternative.
Visual C# provides prototypes of some common project types, including:
• Windows Application.
• Class Library.
• Windows Control Library.
• ASP.NET Web Application.
• ASP.NET Web Service.
• Web Control Library.
• Console Application.
• Windows Service.
6 :: Explain the top .NET class that everything is derived from?
System.Object.
7 :: What is view state in .NET?
The web is stateless. But in ASP.NET, the state of a page is maintained in the in the page itself automatically. How? The values are encrypted and saved in hidden controls. this is done automatically by the ASP.NET. This can be switched off / on for a single control
8 :: Explain security measures exist for .NET Remoting in System.Runtime.Remoting?
None. Security should be taken care of at the application level. Cryptography and other security techniques can be applied at application or server level.
9 :: Which dll is required to translate XML to SQL in Internet Information Server (IIS)?
Microsoft.data.sqlxml.dll used to translate XML to SQL using Internet Information Server IIS
10 :: When displaying fonts, what is the difference between pixels, points and ems?
A pixel is the lowest-resolution dot the computer monitor supports. Its size depends on user’s settings and monitor size. A point is always 1/72 of an inch. An em is the number of pixels that it takes to display the letter M.