Choose 70-523 most accurate study material

You are implementing an ASP.NET page in an e-commerce application. Code in a btnAddToCart_Click
event handler adds a product to the shopping cart.
The page should check the status of the shopping cart and always show a cart icon when one or more
items are in the shopping cart. The page should hide the icon when the shopping cart has no items. You
need to add an event handler to implement this requirement.
Which event handler should you add?

• A. Page_Load
• B. Page_PreRender
• C. btnAddToCart_Click
• D. Page_PreInit

You are designing a data access service backed by Microsoft SQL Server. Other developers will use your
service as a third-party service.
You have the following requirements:
*To reduce maintenance cost, you must write the minimal amount of code required for fulfilling the goals.
*The service must function with Microsoft and non-Microsoft technologies.
*The service must implement the WS-Security standards.
You need to design the service to meet the requirements.
Which approach should you recommend?

• A. Use SQL Server XML Web services.
• B. Use a WCF service with multiple bindings.
• C. Use an ASP.NET Web service.
• D. Use an .ashx file to return an XML response over HTTPS.

A Windows Communication Foundation (WCF) service has a callback contract.
You are developing a client application that will call this service.
You must ensure that the client application can interact with the WCF service.
What should you do?

• A. On the client, use GetCallbackChannel<T>.
• B. On the client, create a proxy derived from DuplexClientBase<TChannel>.
• C. On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.
• D. On the OperationContractAttribute, set the AsyncPattern property value to True.

You are implementing an ASP.NET AJAX page that contains two div elements. You need to ensure that the
content of each div element can be refreshed individually, without requiring a page refresh.
What should you do?

• A. Add two forms to the page. Add a script manager and an update panel to each form. Add a content template to each update panel, and move each div element into a content template.
• B. Add two forms to the page. Add a script manager and an update panel to each form. Add a content template to each update panel, and move each div element into a content template.
• C. Add a form and two update panels to the page. Add a script manager to the form. Add a content template to each update panel, and move a div element into each content template.
• D. Add a form and two update panels to the page. Add two script managers to the form, one for each update panel. Add a content template to each update panel, and move each div element into a content template.

You are troubleshooting an ASP.NET Web application. System administrators have recently expanded your
web farm from one to two servers. Users are periodically reporting an error message about invalid view
state.
You need to fix the problem.
What should you do?

• A. Set the machineKey in machine.config to the same value on both servers.
• B. Change the session state mode to SQL Server on both servers and ensure both servers use the same connection string.
• C. Set viewStateEncryptionMode to Auto in web.config on both servers.
• D. Override the SavePageStateToPersistenceMedium and LoadPageStateFromPersistenceMedium methods in the page base class to serialize the view state to a local web server file.