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Q101. HOTSPOT - (Topic 2) 

You have the following code: 

For each of the following statements, select Yes if the statement is true. Otherwise, select No. 

Answer: 

Q102. - (Topic 1) 

You are developing an application by using C#. You provide a public key to the 

development team during development. 

You need to specify that the assembly is not fully signed when it is built. 

Which two assembly attributes should you include in the source code? (Each correct 

answer presents part of the solution. Choose two.) 

A. AssemblyFlagsAttribute 

B. AssemblyKeyFileAttribute 

C. AssemblyConfigurationAttribute 

D. AssemblyDelaySignAttribute 

Answer: B,D 

Q103. - (Topic 1) 

You use the Task.Run() method to launch a long-running data processing operation. The data processing operation often fails in times of heavy network congestion. 

If the data processing operation fails, a second operation must clean up any results of the first operation. 

You need to ensure that the second operation is invoked only if the data processing operation throws an unhandled exception. 

What should you do? 

A. Create a task within the operation, and set the Task.StartOnError property to true. 

B. Create a TaskFactory object and call the ContinueWhenAll() method of the object. 

C. Create a task by calling the Task.ContinueWith() method. 

D. Use the TaskScheduler class to create a task and call the TryExecuteTask() method on the class. 

Answer: C 

Explanation: 

Task.ContinueWith - Creates a continuation that executes asynchronously when the target Task completes.The returned Task will not be scheduled for execution until the current task has completed, whether it completes due to running to completion successfully, faulting due to an unhandled exception, or exiting out early due to being canceled. http://msdn.microsoft.com/en-us/library/dd270696.aspx 

Q104. DRAG DROP - (Topic 2) 

You have an application that accesses a Microsoft SQL Server database. 

The database contains a stored procedure named Proc1. Proc1 accesses several rows of data across multiple tables. 

You need to ensure that after Proc1 executes, the database is left in a consistent state. While Proc1 executes, no other operation can modify data already read or changed by Proc1. (Develop the solution by selecting and ordering the required code snippets. 

You may not need all of the code snippets.) 

Answer: 

Q105. - (Topic 2) 

You are developing an application that will use multiple asynchronous tasks to optimize performance. 

You create three tasks by using the following code segment. (Line numbers are included for reference only.) 

You need to ensure that the ProcessTasks() method waits until all three tasks complete before continuing. 

Which code segment should you insert at line 09? 

A. Task.WaitFor(3); 

B. tasks.Yield(); 

C. tasks.WaitForCompletion(); 

D. Task.WaitAll(tasks); 

Answer: D 

Q106. - (Topic 1) 

You are developing an application that will convert data into multiple output formats. 

The application includes the following code. (Line numbers are included for reference only.) 

You are developing a code segment that will produce tab-delimited output. All output routines implement the following interface: 

You need to minimize the completion time of the GetOutput() method. Which code segment should you insert at line 06? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: B 

Explanation: 

A String object concatenation operation always creates a new object from the existing string and the new data. A StringBuilder object maintains a buffer to accommodate the concatenation of new data. New data is appended to the buffer if room is available; otherwise, a new, larger buffer is allocated, data from the original buffer is copied to the new buffer, and the new data is then appended to the new buffer. The performance of a concatenation operation for a String or StringBuilder object depends on the frequency of memory allocations. A String concatenation operation always allocates memory, whereas a StringBuilder concatenation operation allocates memory only if the StringBuilder object buffer is too small to accommodate the new data. Use the String class if you are concatenating a fixed number of String objects. In that case, the compiler may even combine individual concatenation operations into a single operation. Use a StringBuilder object if you are concatenating an arbitrary number of strings; for example, if you're using a loop to concatenate a random number of strings of user input. 

http://msdn.microsoft.com/en-us/library/system.text.stringbuilder(v=vs.110).aspx 

Q107. - (Topic 1) 

You are implementing a method named FloorTemperature that performs conversions between value types and reference types. The following code segment implements the method. (Line numbers are included for reference only.) 

You need to ensure that the application does not throw exceptions on invalid conversions. Which code segment should you insert at line 04? 

A. int result = (int)degreesRef; 

B. int result = (int)(double)degreesRef; 

C. int result = degreesRef; 

D. int result = (int)(float)degreesRef; 

Answer: D 

Q108. DRAG DROP - (Topic 1) 

You are developing an application that will populate an extensive XML tree from a Microsoft SQL Server 2008 R2 database table named Contacts. 

You are creating the XML tree. The solution must meet the following requirements: . Minimize memory requirements. . Maximize data processing speed. You open the database connection. You need to create the XML tree. 

How should you complete the relevant code? (To answer, drag the appropriate code 

segments to the correct locations in the answer area. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.) 

Answer: 

Q109. - (Topic 2) 

You are troubleshooting an application that uses a class named FullName. The class is decorated with the DataContractAttribute attribute. The application includes the following code. (Line numbers are included for reference only.) 

You need to ensure that the entire FullName object is serialized to the memory stream object. 

Which code segment should you insert at line 09? 

A. binary.WriteEndElement(); 

B. binary.NriteEndDocument(); 

C. ms.Close() ; 

D. binary.Flush(); 

Answer: A 

Explanation: * DataContractSerializer.WriteEndObject Method (XmlDictionaryWriter) Writes the closing XML element using an XmlDictionaryWriter. 

* Note on line 07: DataContractSerializer.WriteObject Method Writes all the object data (starting XML element, content, and closing element) to an XML document or stream. 

XmlDictionaryWriter 

Q110. DRAG DROP - (Topic 1) 

You are developing an application that includes a class named Kiosk. The Kiosk class includes a static property named Catalog. The Kiosk class is defined by the following code segment. (Line numbers are included for reference only.) 

You have the following requirements: 

Initialize the _catalog field to a Catalog instance. 

Initialize the _catalog field only once. 

Ensure that the application code acquires a lock only when the _catalog object must be instantiated. 

You need to meet the requirements. 

Which three code segments should you insert in sequence at line 09? (To answer, move the appropriate code segments from the list of code segments to the answer area and arrange them in the correct order.) 

Answer: