What is the purpose of custom error pages in ASP.NET?
a. To provide a user-friendly interface when an error occurs
b. To optimize database queries
c. To manage user authentication
d. To handle file uploads
Answer: a. To provide a user-friendly interface when an error occurs
How can you configure custom error pages in an ASP.NET application?
a. By modifying the web.config file
b. By changing the database connection settings
c. By using the Global.asax file
d. By editing the HTML pages directly
Answer: a. By modifying the web.config file
Which element in the web.config file is used to configure custom error pages?
a. <customErrors>
b. <httpErrors>
c. <errorPages>
d. <exceptionHandling>
Answer: a. <customErrors>
What attribute of the <customErrors> element specifies the default error page for the application?
a. defaultRedirect
b. errorPage
c. redirect
d. defaultPage
Answer: a. defaultRedirect
How can you specify a custom error page for a specific HTTP error status code?
a. By using the <httpErrors> element in the web.config file
b. By configuring the defaultRedirect attribute
c. By handling errors in the Global.asax file
d. By using JavaScript error handling
Answer: a. By using the <httpErrors> element in the web.config file
What value should the mode attribute of the <customErrors> element be set to for enabling custom error pages?
a. On
b. Off
c. True
d. Enabled
Answer: a. On
What does the defaultRedirect attribute in the <customErrors> element specify?
a. The URL of the default custom error page
b. The default HTTP status code
c. The URL for the application’s home page
d. The default connection string
Answer: a. The URL of the default custom error page
How can you disable custom error pages and show detailed error information instead?
a. By setting the mode attribute of the <customErrors> element to Off
b. By setting the defaultRedirect attribute to an empty string
c. By removing the <customErrors> element from the web.config file
d. By setting the mode attribute to On
Answer: a. By setting the mode attribute of the <customErrors> element to Off
What is the purpose of the <httpErrors> element in ASP.NET?
a. To specify custom error pages for HTTP status codes
b. To configure database error handling
c. To manage session state
d. To handle authentication errors
Answer: a. To specify custom error pages for HTTP status codes
How can you configure custom error pages for specific HTTP status codes using the <httpErrors> element?
a. By adding <error> child elements with statusCode and subStatusCode attributes
b. By using the defaultRedirect attribute
c. By adding <customErrors> child elements
d. By configuring the mode attribute
Answer: a. By adding <error> child elements with statusCode and subStatusCode attributes
What is the role of the statusCode attribute in the <error> element of the <httpErrors> configuration?
a. To specify the HTTP status code for which the custom error page should be shown
b. To specify the URL of the custom error page
c. To specify the default HTTP method
d. To specify the application port number
Answer: a. To specify the HTTP status code for which the custom error page should be shown
What does the subStatusCode attribute in the <error> element allow you to do?
a. Specify a custom error page for specific sub-status codes
b. Specify a default redirect URL
c. Define the error handling method
d. Set the application timeout
Answer: a. Specify a custom error page for specific sub-status codes
How can you create a custom error page for a 404 Not Found error?
a. By adding an <error statusCode="404" path="/404.html" /> entry in the <httpErrors> section
b. By setting the defaultRedirect attribute to /404.html
c. By using the mode attribute set to Off
d. By creating a page named 404.aspx
Answer: a. By adding an <error statusCode="404" path="/404.html" /> entry in the <httpErrors> section
Which method is used to redirect to a custom error page programmatically in ASP.NET?
a. Response.Redirect()
b. Server.Transfer()
c. HttpContext.Response.Redirect()
d. HttpContext.Server.Transfer()
Answer: a. Response.Redirect()
In ASP.NET MVC, where should you place custom error views for different HTTP status codes?
a. In the Views/Shared folder with names like Error404.cshtml
b. In the Views/Errors folder
c. In the Content folder
d. In the Scripts folder
Answer: a. In the Views/Shared folder with names like Error404.cshtml
What should be configured to use a custom error page for an unhandled exception in ASP.NET MVC?
a. A custom error handling method in the Application_Error event in Global.asax
b. Custom routes for error handling
c. A custom HTTP error page in the web.config file
d. A custom Controller action for error handling
Answer: a. A custom error handling method in the Application_Error event in Global.asax
How can you ensure that custom error pages are only used in a production environment and not in a development environment?
a. By setting the mode attribute of the <customErrors> element to On in production and Off in development
b. By configuring custom error pages in the web.config file only for production
c. By using a separate configuration file for development and production
d. By checking the IsDevelopment flag in the custom error page code
Answer: a. By setting the mode attribute of the <customErrors> element to On in production and Off in development
What is the recommended approach for handling exceptions in ASP.NET Core applications?
a. Using middleware to handle exceptions and redirect to custom error pages
b. Using try-catch blocks in every method
c. Configuring custom error pages in the web.config file
d. Using Global.asax for exception handling
Answer: a. Using middleware to handle exceptions and redirect to custom error pages
In ASP.NET Core, how can you use the UseExceptionHandler middleware to specify a custom error page?
a. By calling app.UseExceptionHandler("/Error") in the Startup.Configure method
b. By setting the defaultRedirect attribute in the web.config file
c. By configuring custom routes for errors
d. By creating a custom ErrorController
Answer: a. By calling app.UseExceptionHandler("/Error") in the Startup.Configure method
What is the purpose of setting up custom error pages for HTTP status codes like 404 or 500?
a. To provide a user-friendly experience when specific errors occur
b. To improve the performance of the application
c. To optimize database queries
d. To manage user authentication
Answer: a. To provide a user-friendly experience when specific errors occur
How can you handle custom errors in a web application hosted on IIS?
a. By configuring custom error pages in the web.config file
b. By using the HttpContext class
c. By editing the IIS server configuration directly
d. By using custom error pages in the Global.asax file
Answer: a. By configuring custom error pages in the web.config file
Which configuration setting allows you to specify a custom error page for a 500 Internal Server Error in ASP.NET Core?
a. app.UseExceptionHandler("/500")
b. app.UseStatusCodePages("/500")
c. app.UseStaticFiles("/500")
d. app.UseResponseCaching("/500")
Answer: a. app.UseExceptionHandler("/500")
What is the effect of setting the customErrors mode to RemoteOnly?
a. Custom error pages are shown to remote users, but local users see detailed error information
b. Custom error pages are shown to all users
c. Detailed error information is shown to all users
d. No error pages are shown
Answer: a. Custom error pages are shown to remote users, but local users see detailed error information
How do you configure custom error pages for specific error codes in ASP.NET Core?
a. By using the UseStatusCodePages middleware and specifying the path to error pages
b. By using the UseExceptionHandler middleware only
c. By configuring custom error pages in the web.config file
d. By handling errors in the Global.asax file
Answer: a. By using the UseStatusCodePages middleware and specifying the path to error pages
What is the role of the ErrorController in ASP.NET Core applications?
a. To handle requests to custom error pages
b. To manage user authentication
c. To optimize database access
d. To handle routing configuration
Answer: a. To handle requests to custom error pages
In an ASP.NET MVC application, what is the advantage of using custom error pages over default error pages?
a. Custom error pages provide a better user experience and can be branded to match the application’s look and feel
b. Default error pages are always preferable
c. Custom error pages slow down the application
d. Custom error pages are less secure
Answer: a. Custom error pages provide a better user experience and can be branded to match the application’s look and feel
How do you configure a custom error page in an ASP.NET MVC application using the HandleError attribute?
a. By applying the [HandleError(View = "Error")] attribute to the controller or action method
b. By configuring custom error pages in the web.config file
c. By using the ErrorController to handle errors
d. By creating a global exception handler in Global.asax
Answer: a. By applying the [HandleError(View = "Error")] attribute to the controller or action method
What should you do to ensure that custom error pages do not expose sensitive information to users?
a. Design custom error pages to be generic and do not display stack traces or detailed error information
b. Include detailed error information on custom error pages for debugging purposes
c. Use default error pages instead of custom ones
d. Enable custom error pages only in development environments
Answer: a. Design custom error pages to be generic and do not display stack traces or detailed error information
Which configuration setting in ASP.NET MVC allows you to specify different views for different types of errors?
a. The HandleError attribute with specific view names
b. The customErrors section in the web.config file
c. The ErrorController actions
d. The Global.asax file configuration
Answer: a. The HandleError attribute with specific view names
In ASP.NET Core, how can you handle 404 errors specifically while showing a custom error page?
a. By using the app.UseStatusCodePages middleware with a custom path
b. By using the app.UseExceptionHandler middleware
c. By using the ErrorController
d. By configuring custom errors in the web.config file
Answer: a. By using the app.UseStatusCodePages middleware with a custom path
What is the primary purpose of setting up custom error pages in a production environment?
a. To provide a user-friendly and consistent experience during errors while protecting sensitive information
b. To improve application performance
c. To manage user sessions
d. To optimize database queries
Answer: a. To provide a user-friendly and consistent experience during errors while protecting sensitive information
How can you test custom error pages in an ASP.NET application during development?
a. By setting the mode attribute of the <customErrors> element to On and simulating errors
b. By setting the mode attribute of the <customErrors> element to Off
c. By removing the custom error page configuration from the web.config file
d. By disabling the custom error pages in the Global.asax file
Answer: a. By setting the mode attribute of the <customErrors> element to On and simulating errors
What is the best practice for deploying custom error pages in an ASP.NET application?
a. Test custom error pages thoroughly in a staging environment before deploying them to production
b. Deploy custom error pages directly to production without testing
c. Use default error pages for all environments
d. Only configure custom error pages in development environments
Answer: a. Test custom error pages thoroughly in a staging environment before deploying them to production
How can you handle exceptions that occur during the rendering of custom error pages?
a. By using a secondary custom error page or fallback mechanism
b. By logging the error and showing a generic message
c. By using the Application_Error method in Global.asax
d. By ignoring the exceptions
Answer: a. By using a secondary custom error page or fallback mechanism