TOP INTERVIEW QUESTIONS & ANSWER
1. What is ASP?
- Active Server Pages (ASP), also known as Classic ASP, is a Microsoft's server-side technology, which helps in creating dynamic and user-friendly Web pages. It uses different scripting languages to create dynamic Web pages, which can be run on any type of browser. The Web pages are built by using either VBScript or JavaScript and these Web pages have access to the same services as Windows application, including ADO (ActiveX Data Objects) for database access, SMTP (Simple Mail Transfer Protocol) for e-mail, and the entire COM (Component Object Model) structure used in the Windows environment. ASP is implemented through a dynamic-link library (asp.dll) that is called by the IIS server when a Web page is requested from the server.
2. What is ASP.NET?
- ASP.NET is a specification developed by Microsoft to create dynamic Web applications, Web sites, and Web services. It is a part of .NET Framework. You can create ASP.NET applications in most of the .NET compatible languages, such as Visual Basic, C#, and J#. The ASP.NET compiles the Web pages and provides much better performance than scripting languages, such as VBScript. The Web Forms support to create powerful forms-based Web pages. You can use ASP.NET Web server controls to create interactive Web applications. With the help of Web server controls, you can easily create a Web application.
3. What is the basic difference between ASP and ASP.NET?
- The basic difference between ASP and ASP.NET is that ASP is interpreted; whereas, ASP.NET is compiled. This implies that since ASP uses VBScript; therefore, when an ASP page is executed, it is interpreted. On the other hand, ASP.NET uses .NET languages, such as C# and VB.NET, which are compiled to Microsoft Intermediate Language (MSIL).
4. In which event are the controls fully loaded?
- Page load event guarantees that all controls are fully loaded. Controls are also accessed in Page_Init events but you will see that view state is not fully loaded during this event
5. How can we identify that the Page is Post Back?
- Page object has an "IsPostBack" property, which can be checked to know that is the page posted back.
6. What is the lifespan for items stored in ViewState?
- The items stored in ViewState live until the lifetime of the current page expires including the postbacks to the same page.
7. How information about the user's locale can be accessed?
- The information regarding a user's locale can be accessed by using the System.Web.UI.Page.Culture property.
8. What is the difference between SQL notification and SQL invalidation?
- The SQL cache notification generates notifications when the data of a database changes, on which your cache item depends. The SQL cache invalidation makes a cached item invalid when the data stored in a SQL server database changes.
9. Which is the parent class of the Web server control?
- The System.Web.UI.Control class is the parent class for all Web server controls.
10. Can you set which type of comparison you want to perform by the CompareValidator control?
- Yes, by setting the Operator property of the CompareValidator control.
11. What is the behavior of a Web browser when it receives an invalid element?
- The behavior of a Web browser when it receives an invalid element depends on the browser that you use to browse your application. Most of the browsers ignore the invalid element; whereas, some of them display the invalid elements on the page.
12. What are the advantages of the code-behind feature?
- The code-behind feature of ASP.NET offers a number of advantages:
Makes code easy to understand and debug by separating application logic from HTML tags
Provides the isolation of effort between graphic designers and software engineers
Removes the problems of browser incompatibility by providing code files to exist on the Web server and supporting Web pages to be compiled on demand.
19. What is the difference between a default skin and a named skin?
- The default skin is applied to all the Web server controls in a Web form, which are of similar type, and it does not provide a Skin ID attribute. The named skin provides a Skin ID attribute and users have to set the Skin ID property to apply it.
20. What is IIS? Why is it used?
- Internet Information Services (IIS) is created by Microsoft to provide Internet-based services to ASP.NET Web applications. It makes your computer to work as a Web server and provides the functionality to develop and deploy Web applications on the server. IIS handles the request and response cycle on the Web server. It also offers the services of SMTP and FrontPage server extensions. The SMTP is used to send emails and use FrontPage server extensions to get the dynamic features of IIS, such as form handler.
21. What is Query String? What are its advantages and limitations?
- The Query String helps in sending the page information to the server.
The Query String has the following advantages:
Every browser works with Query Strings.
It does not require server resources and so does not exert any kind of burden on the server.
The following are the limitations of Query String:
Information must be within the limit because URL does not support many characters.
Information is clearly visible to the user, which leads to security threats.
22. What is actually returned from server to the browser when a browser requests an .aspx file and the file is displayed?
- When a browser requests an .aspx file then the server returns a response, which is rendered into a HTML string.
23. How can you display all validation messages in one control?
- The ValidationSummary control displays all validation messages in one control.
24. Which two new properties are added in ASP.NET 4.0 Page class?
- The two new properties added in the Page class are
- MetaKeyword
- MetaDescription.
MORE QUESTIONS...COMING SOON......
THANK YOU
1. What is ASP?
- Active Server Pages (ASP), also known as Classic ASP, is a Microsoft's server-side technology, which helps in creating dynamic and user-friendly Web pages. It uses different scripting languages to create dynamic Web pages, which can be run on any type of browser. The Web pages are built by using either VBScript or JavaScript and these Web pages have access to the same services as Windows application, including ADO (ActiveX Data Objects) for database access, SMTP (Simple Mail Transfer Protocol) for e-mail, and the entire COM (Component Object Model) structure used in the Windows environment. ASP is implemented through a dynamic-link library (asp.dll) that is called by the IIS server when a Web page is requested from the server.
2. What is ASP.NET?
- ASP.NET is a specification developed by Microsoft to create dynamic Web applications, Web sites, and Web services. It is a part of .NET Framework. You can create ASP.NET applications in most of the .NET compatible languages, such as Visual Basic, C#, and J#. The ASP.NET compiles the Web pages and provides much better performance than scripting languages, such as VBScript. The Web Forms support to create powerful forms-based Web pages. You can use ASP.NET Web server controls to create interactive Web applications. With the help of Web server controls, you can easily create a Web application.
3. What is the basic difference between ASP and ASP.NET?
- The basic difference between ASP and ASP.NET is that ASP is interpreted; whereas, ASP.NET is compiled. This implies that since ASP uses VBScript; therefore, when an ASP page is executed, it is interpreted. On the other hand, ASP.NET uses .NET languages, such as C# and VB.NET, which are compiled to Microsoft Intermediate Language (MSIL).
4. In which event are the controls fully loaded?
- Page load event guarantees that all controls are fully loaded. Controls are also accessed in Page_Init events but you will see that view state is not fully loaded during this event
5. How can we identify that the Page is Post Back?
- Page object has an "IsPostBack" property, which can be checked to know that is the page posted back.
6. What is the lifespan for items stored in ViewState?
- The items stored in ViewState live until the lifetime of the current page expires including the postbacks to the same page.
7. How information about the user's locale can be accessed?
- The information regarding a user's locale can be accessed by using the System.Web.UI.Page.Culture property.
8. What is the difference between SQL notification and SQL invalidation?
- The SQL cache notification generates notifications when the data of a database changes, on which your cache item depends. The SQL cache invalidation makes a cached item invalid when the data stored in a SQL server database changes.
9. Which is the parent class of the Web server control?
- The System.Web.UI.Control class is the parent class for all Web server controls.
10. Can you set which type of comparison you want to perform by the CompareValidator control?
- Yes, by setting the Operator property of the CompareValidator control.
11. What is the behavior of a Web browser when it receives an invalid element?
- The behavior of a Web browser when it receives an invalid element depends on the browser that you use to browse your application. Most of the browsers ignore the invalid element; whereas, some of them display the invalid elements on the page.
12. What are the advantages of the code-behind feature?
- The code-behind feature of ASP.NET offers a number of advantages:
Makes code easy to understand and debug by separating application logic from HTML tags
Provides the isolation of effort between graphic designers and software engineers
Removes the problems of browser incompatibility by providing code files to exist on the Web server and supporting Web pages to be compiled on demand.
19. What is the difference between a default skin and a named skin?
- The default skin is applied to all the Web server controls in a Web form, which are of similar type, and it does not provide a Skin ID attribute. The named skin provides a Skin ID attribute and users have to set the Skin ID property to apply it.
20. What is IIS? Why is it used?
- Internet Information Services (IIS) is created by Microsoft to provide Internet-based services to ASP.NET Web applications. It makes your computer to work as a Web server and provides the functionality to develop and deploy Web applications on the server. IIS handles the request and response cycle on the Web server. It also offers the services of SMTP and FrontPage server extensions. The SMTP is used to send emails and use FrontPage server extensions to get the dynamic features of IIS, such as form handler.
21. What is Query String? What are its advantages and limitations?
- The Query String helps in sending the page information to the server.
The Query String has the following advantages:
Every browser works with Query Strings.
It does not require server resources and so does not exert any kind of burden on the server.
The following are the limitations of Query String:
Information must be within the limit because URL does not support many characters.
Information is clearly visible to the user, which leads to security threats.
22. What is actually returned from server to the browser when a browser requests an .aspx file and the file is displayed?
- When a browser requests an .aspx file then the server returns a response, which is rendered into a HTML string.
23. How can you display all validation messages in one control?
- The ValidationSummary control displays all validation messages in one control.
24. Which two new properties are added in ASP.NET 4.0 Page class?
- The two new properties added in the Page class are
- MetaKeyword
- MetaDescription.
MORE QUESTIONS...COMING SOON......
THANK YOU
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