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Microsoft TS: Accessing Data with Microsoft .NET Framework 4 Sample Questions:

1. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that connects to a MS SQL server 2008 database by User Authentication. The application contains the following connection string:
SERVER=DBSERVER-01; DATABASE=pubs; uid=sa; pwd=secret;
You need to ensure that the password value in the connection string property of a SqlConnection object
does not exist after is called.
What should you add to the connection string?

A) Persist Security Info = False
B) Trusted_Connection = True
C) Persist Security Info = True
D) Trusted_Connection = False

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application.
You use the ADO.NET Entity Framework Designer to model entities.
You need to ensure that the entities are self-tracking. What should you do in the ADO.NET Entity
Framework Designer?

A) Add an ADO.NET Self-Tracking Entity Generator to the model.
B) Add an ADO.NET EntityObject Generator to the model.
C) Change the Transform Related Text Templates On Save option to False.
D) Change the Code Generation Strategy option from Default to None.

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The application connects to a Microsoft SQL Server 2008 database.
SQLConnection conn = new SQLConnection(connectionString);
conn.Open();
SqlTransaction tran = db.BeginTransaction(IsolationLevel. ...);
...
You must retrieve not commited records originate from various transactions. Which method should you use?

A) ReadCommited
B) RepeatableRead
C) ReadUncommited
D) Serializable

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The application contains the following XML document:
<bib> <book title="TCP/IP Illusrated" year="1994">
<author>Author1</author>
</book>
<book title="Programming in UNIX" year="1992">
<author>Author1</author>
<author>Author2</author>
<author>Author3</author>
</book>
<book title="Data on the web" year="2000">
<author>Author4</author>
<author>Author3</author>
</book> </bib>
You add the following code fragment. (Line numbers are included for reference only.)
01 public IEnumerable<XElement> GetBooks(string xml)
02 {
03 XDocument doc = XDocument.Parse(xml);
04 ...
05 }
You need to return a list of book XML element that are authored by Author1. Which code segment should you insert at line 04?

A) return doc.Element("bib").Elements() .SelectMany(el => el.Elements() .Where(e2 => e2.Equals(new XElement("author", "Author1"))));
B) return doc.Elements("bib").Elements()
.Where(e1 => e1.Elements().Any(e2 => e2.Equals(new XElement("author", "Author1"))));
C) return doc.Elements("bib").Elements() .Where(e1 => e1.Elements().Any(e2 => (string)e2 == "Author1"));
D) return doc.Element("bib").Elements() .SelectMany(el => el.Elements() .Where(e2 => (string)e2 == "Author1"));

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to several SQL Server databases. You create a function that modifies customer
records that are stored in multiple databases.
All updates for a given record are performed in a single transaction. You need to ensure that all transactions
can be recovered. What should you do?

A) Call the RecoveryComplete method of the TransactionManager class.
B) Call the Reenlist method of the TransactionManager class.
C) Call the EnlistVolatile method of the Transaction class.
D) Call the EnlistDurable method of the Transaction class.

Solutions: