MCSD.NET - 70-315 Exam Question:
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Suppose You are creating an ASP.NET page for XYZ. You create a DataGrid control that displays past
purchases made by the user. The DataGrid control is populated from an existing database when
the page is created.
The page contains TextBox controls that allow users to update their personal information, such as
address and telephone number.
You need to ensure that the page is refreshed as quickly as possible when users update their
contact information.
What should you do?
A. Set the Enable property of the DataGrid control to false.
B. Set the EnableViewState property of the DataGrid to false.
C. Write code in the Page.Load event handler that populates the DataGrid control only when the
IsPostBack property of the page is false.
D. Write in the Page.Load event handler that populates the DataGrid control only when the
IsPostBack property of the page is true.

Answer:

D. Write in the Page.Load event handler that populates the DataGrid control only when the
IsPostBack property of the page is true.

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Suppose You are creating an ASP.NET page for selling movie tickets. Users select a region, and then they
select from a list of cities in that region. The site displays the names and locations of movie
theaters in the city selected by the user.
Your company, XYZ Brothers, maintains a list of theaters in a database table that includes the
city, name, and street address of each theater. You want to minimize the time required to retrieve
and display the list of theater names after a user selects the region and city.
What should you do?
A. Modify the connection string to add the packet size property and set its values to 8192.
B. Add the following directive to the page:
OutputCache VaryByParam=?city?
C. Add the following directive to the page:
OutputCache VaryByControl=?region;city?
D. Modify the connection string to keep your database?s connection pool as small as possible.
You ASP.NET application manages order entry data by using a DataSet object named
EXorderEntry. The EXorderEntry object includes two DataTable objects named orderNames and
OrderDetails. A ForeignKeyConstraint object named orderDetailsKey is defined between the two
DataTable objects.
You attempt to delete a row in orderNames while there are related rows in OrderDetails, and an
exception is generated.
What is the most likely cause of the problem?
A. The current value of OrderDetails.KeyDeleteRule is Rule.Cascade.
B. The current value of OrderDetails.KeyDeleteRule is Rule.SetNull.
C. The current value of OrderDetails.KeyDeleteRule is Rule.SetDefault.
D. The current value of OrderDetails.KeyDeleteRule is Rule.None.