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Microsoft Designing & Developing Web Apps Using MS .NET Frmwk 4 Sample Questions:

1. You are designing an ASP.NET Web Forms application that uses a database containing user names and hashed passwords for authentication.
The Web application includes a login form in which users type their user names and passwords.
You need to design a strategy to ensure that the user's login credentials cannot be stolen through a man-in-the- middle attack.
Which approach should you recommend?

A) Write an on Submit JavaScript handler that URL-encodes the password before the password is passed to the server.
B) Install a certificate on the Web server, and force the login form to use SSL.
C) Write an on Submit JavaScript handler that hashes the password before the password is submitted to the server.
D) Write an On Click method for the Submit button that hashes the password before the password is compared with the password value that is stored in the database.

2. You have an ASP.NET Web Forms application for processing orders.
Many users of the application submit their order forms multiple times due to incorrectly formatted credit card information.
You need to plan for validation of the length and format of data in the credit card field on the client side prior to processing each transaction.
Which approach should you recommend?

A) Use a Required Field Validator control and a Regular Expression Validator control.
B) Use a Custom Validator control in the On Server Validate method
C) Use a Custom Validator control in the Page_Load method.
D) Use a Required Field Validator control and a Compare Validator control.

3. You are designing a method for collecting information regarding usage of new functionality
within an ASP.NET Web application.
You have the following requirements:
You need to design a strategy that meets the requirements.
Which approach should you recommend?

A) Use ASP.NET tracing
B) Use ASP.NET health monitoring
C) Use the Request Started method
D) Use remote debugging

4. You are designing an ASP.NET Web application for content management.
You have the following requirements:
You need to design a solution for identifying the display dimensions of the requesting browser. Which approach should you recommend?

A) Use CurrentUlCutture.
B) Use the HttpUtility class.
C) Use the HttpWorkerRequest class.
D) Use the HttpBrowserCapabilities class.

5. You are designing an exception-handling strategy for an ASP.NET Web Forms application. The Web application will use Windows authentication.
The Web application must meet the following requirements:
Display a user-friendly error message to users.
Display a detailed error message to server administrators.
You need to recommend an approach for handling exceptions.
What should you recommend?

A) On the assembly, add a SecureRules attribute with the security rule set configured to level 2.
B) In the customErrors element of the Web.config file, set the mode attribute to remoteOnly.
C) Add a HandleError attribute to each controller class.
D) In the Application_Error event handler, wrap the exception in an ExternalException exception. Re-throw the exception if the user is not a member of the Administrators group.

Solutions: