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最新的 MCTS 070-516 免費考試真題:

1. 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) RepeatableRead
B) ReadCommited
C) Serializable
D) ReadUncommited

2. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
2008 database.
The application uses nested transaction scopes. An inner transaction scope contains code that inserts
records into the database.
You need to ensure that the inner transaction can successfully commit even if the outer transaction rolls
back.
What are two possible TransactionScope constructors that you can use for the inner transaction to achieve
this goal?
(Each correct answer presents a complete solution. Choose two.)

A) TransactionScope(TransactionScopeOption.Required)
B) TransactionScope()
C) TransactionScope(TransactionScopeOption.RequiresNew)
D) TransactionScope(TransactionScopeOption.Suppress)

3. You use Microsoft .NET Framework 4.0 to develop an ASP.NET Web application that connects to a
Microsoft SQL Server 2008 database.
The application uses Integrated Windows authentication in Internet Information Services (IIS) to
authenticate users.
A connection string named connString defines a connection to the database by using integrated security.
You need to ensure that a SqlCommand executes under the application pool's identity on the database
server.
Which code segment should you use?

A) using (var conn = new SqlConnection())
{
conn.ConnectionString = connString;
var cmd = new SqlCommand("SELECT * FROM BLOG", conn);
using (HostingEnvironment.Impersonate())
{
conn.Open();
}
var result = cmd.ExecuteScalar();
}
B) using (var conn = new SqlConnection())
{
conn.ConnectionString = connString;
SqlCommand cmd = null;
using (HostingEnvironment.Impersonate())
{
cmd = new SqlCommand("SELECT * FROM BLOG", conn);
}
conn.Open();
var result = cmd.ExecuteScalar();
}
C) using (var conn = new SqlConneccion())
{
using (HostingEnvironroent.Impersonate())
{
conn.ConnectionString = connString;
}
var cmd = new SqlCommand("SELECT * FROM BLOG, conn);
conn.Open() ;
var result = cmd.ExecuteScalar();
}
D) using (var conn = new SqlConnection(connString))
{
var cmd = new SqlCommand ("SELECT * FROM BLOG, conn);
conn.Open();
using(HostingEnvironment.Impersonate())
{
var result = cmd.ExecuteScalar();
}
}

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application updates several Microsoft SQL Server databases within a single transaction.
You need to ensure that after a resource failure, you can manage unresolved transactions. What should
you do?

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

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database.
You write the following code segment that executes two commands against the database within a
transaction.
(Line numbers are included for reference only.)
01 using(SqlConnection connection = new SqlConnection(cnnStr)) {
02 connnection.Open();
03 SqlTransaction sqlTran = connection.BeginTransaction();
04 SqlCommand command = connection.CreateCommand();
05 command.Transaction = sqlTran;
06 try{
07 command.CommandText = "INSERT INTO Production.ScrapReason(Name)
VALUES('Wrong size')";
08 command.ExecuteNonQuery();
09 command.CommandText = "INSERT INTO Production.ScrapReason(Name)
VALUES('Wrong color')";
10 command.ExecuteNonQuery();
11 ...
l2 }
You need to log error information if the transaction fails to commit or roll back. Which code segment should you insert at line 11?

A) sqlTran.Commit(); } catch (Exception ex) {
sqlTran.Rollback();
Trace.WriteLine(ex.Message);
}
B) catch (Exception ex){ Trace.WriteLine(ex.Message); try{
sqlTran.Rollback();
}
catch (Exception exRollback){
Trace.WriteLine(exRollback.Message);
}
}
finaly {
sqltran.commit( );
}
C) sqlTran.Commit(); } catch (Exception ex) {
Trace.WriteLine(ex.Message);
try {
sqlTran.Rollback();
}
catch (Exception exRollback) {
Trace.WriteLine(exRollback.Message);
}
}
D) catch (Exception ex) { sqlTran.Rollback();
Trace.WriteLine(ex.Message);
}
finaly {
try {
sqltran.commit( );
}
catch (Exception exRollback) {
Trace.WriteLine(excommit.Message);
}
}

問題與答案：