MCSD.NET - 70-316 Exam Question:
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Suppose As a programmer at XYZ inc, you use Visual Studio .NET to create several applications that will
be deployed commercially over the Internet. You must ensure that customers can verify the
authenticity of your software.
Which action or actions should you take? (Choose all that apply.)
A. Sign your portable executables by using Signcode.exe.
B. Generate an X.509 certificate by using Makecert.exe.
C. Purchase an X.509 certificate from a certificate authority.
D. Purchase a Software Publisher Certificate from a certificate authority.
E. Convert your certificate to a Software Publisher Certificate by using Cert2spc.exe.

Answer:

A. Sign your portable executables by using Signcode.exe.
D. Purchase a Software Publisher Certificate from a certificate authority.

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You develop a Windows-based application XYZ. XYZ uses a DataSet object that contains two
DataTable objects. XYZ will display data from two data tables. One table contains customer
information, which must be displayed in a data-bound ListBox control. The other table contains
order information, which must be displayed in a DataGrid control.
You need to modify XYZ to enable the list box functionality.
What should you do?
A. Use the DataSet.Merge method.
B. Define primary keys for the Data Table objects.
C. Create a foreign key constraint on the DataSet object.
D. Add a DataRelation object to the Relations collection of the DataSet object.
You execute a query on your external Oracle database named XYZSalesDate by using an
OleDbCommand object. The query uses the Average function to return a single value that
represents the average price of products in the inventory table. You want to optimize performance
when you execute this query.
To execute this query from your ADO.NET code, you need to use a method of the
OleDbCommand object. Which method should you use?
A. ExecuteNonQuery
B. ExecuteScalar
C. ToString
D. ExecuteReader