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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 Microsoft SQL Server 2008 database. You add the following table to the database.
CREATE TABLE ObjectCache ( Id INT IDENTITY PRIMARY KEY, SerializedObjectData XML)
You write the following code segment to retreive records from the ObjectCache table. (Line numbers are included for reference only.)
01 string s = GetConnectionStringFromConfigFile("xmldb");
02 using (SqlConnection conn = new SqlConnection(s))
03 using (SqlCommand cmd = new SqlCommand("select * from ObjectCache",
conn))
04 {
05 conn.Open();
06 SqlDataReader rdr = cmd.ExecuteReader();
07 while(rdr.Read())
08 {
09 ...
10 DeserializeObject(obj);
11 }
12 }
You need to retreive the data from the SerializedObjectData column and pass it to a method named
DeserializeObject.
Which line of code should you insert at line 09?
A) Type obj = (Type)rdr[1];
B) XmlReader obj = (XmlReader)rdr[1];
C) String obj = (String)rdr[1];
D) SByte obj = (SByte)rdr[1];
2. You use Microsoft Visual Studio 2010, Microsoft Sync Framework, and Microsoft .NET Framework 4.0 to
create an application.
You have a ServerSyncProvider connected to a Microsoft SQL Server database. The database is hosted on
a Web server.
Users will use the Internet to access the Customer database through the ServerSyncProvider.
You write the following code segment. (Line numbers are included for reference only.)
01 SyncTable customerSyncTable = new SyncTable("Customer");
02 customerSyncTable.CreationOption =
TableCreationOption.UploadExistingOrCreateNewTable;
03 ...
04 customerSyncTable.SyncGroup = customerSyncGroup;
05 this.Configuration.SyncTables.Add(customerSyncTable);
You need to ensure that the application meets the following requirements:
-Users can modify data locally and receive changes from the server.
-Only changed rows are transferred during synchronization. Which code segment should you insert at line 03?
A) customerSyncTable.SyncDirection = SyncDirection.DownloadOnly;
B) customerSyncTable.SyncDirection = SyncDirection.Snapshot;
C) customerSyncTable.SyncDirection = SyncDirection.Bidirectional;
D) customerSyncTable.SyncDirection = SyncDirection.UploadOnly;
3. A performance issue exists in the application. The following code segment is causing a performance bottleneck:
var colors = context.Parts.GetColors();
You need to improve application performance by reducing the number of database calls. Which code segment should you use?
A) var colors = context.Parts.OfType<Product>().Include ("Parts.Color").GetColors();
B) var colors = context.Parts.OfType<Product>().Include("Color").GetColors();
C) var colors = context.Parts.OfType<Product>().Include ("Product.Color").GetColors();
D) var colors = context.Parts.OfType<Product>().Include("Colors").GetColors();
4. 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.
The database includes a database table named ProductCatalog as shown in the exhibit:
You add the following code segment to query the first row of the ProductCatalog table. (Line numbers are included for reference only.)
01 using(SqlConnection cnx = new SqlConnection(connString)
02 {
03 var command = cnx.CreateCommand();
04 command.CommandType = CommandType.Text;
05 command.CommandText = "SELECT TOP 1 * FROM dbo.ProductCatalog";
06 cnx.Open();
07 var reader = command.ExecuteReader();
08 if (reader.Read())
09 {
10 var id = reader.GetInt32(0);
11 ...
12 reader.Close();
13 }
14 }
Which answer belongs in line 11?
A) var weight = reader.GetFloat(1); var price = reader.Doublel(2); var status = reader.GetByte(3);
B) var weight
= reader.GetFloat(1); var price = reader.GetDecimal(2); var status = reader.GetByte(3);
C) var weight = reader.GetDouble(1); var price = reader.GetFloat(2); var status = reader.GetBoolean(3);
D) var weight = reader.GetDouble(1); var price = reader.GetDecimal(2); var status = reader.GetBoolean(3);
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 use Entity SQL to retrieve data from the
database.
You need to enable query plan caching. Which object should you use?
A) EntityTransaction
B) EntityCommand
C) EntityConnection
D) EntityDataReader
Solutions:
Question # 1 Answer: C | Question # 2 Answer: C | Question # 3 Answer: B | Question # 4 Answer: D | Question # 5 Answer: B |