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Q21. DRAG DROP - (Topic 1) 

You are developing an application that implements a set of custom exception types. You declare the custom exception types by using the following code segments: 

The application includes a function named DoWork that throws .NET Framework exceptions and custom exceptions. The application contains only the following logging methods: 

The application must meet the following requirements: 

. When ContosoValidationException exceptions are caught, log the information by using the static void Log (ContosoValidationException ex) method. . When ContosoDbException or other ContosoException exceptions are caught, log the information by using the static void Log(ContosoException ex) method. 

You need to meet the requirements. 

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: 


Q22. - (Topic 1) 

You are developing a C# application that has a requirement to validate some string input data by using the Regex class. 

The application includes a method named ContainsHyperlink. The ContainsHyperlink() method will verify the presence of a URI and surrounding markup. 

The following code segment defines the ContainsHyperlink() method. (Line numbers are included for reference only.) 

The expression patterns used for each validation function are constant. 

You need to ensure that the expression syntax is evaluated only once when the Regex 

object is initially instantiated. 

Which code segment should you insert at line 04? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: 

RegexOptions.Compiled - Specifies that the regular expression is compiled to an assembly.This yields faster execution but increases startup time.This value should not be assigned to the Options property when calling the CompileToAssembly method. http://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regexoptions.aspx Additional info http://stackoverflow.com/questions/513412/how-does-regexoptions-compiled-work 


Q23. - (Topic 1) 

An application will upload data by using HTML form-based encoding. The application uses a method named SendMessage. 

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

The receiving URL accepts parameters as form-encoded values. 

You need to send the values intA and intB as form-encoded values named a and b, 

respectively. 

Which code segment should you insert at line 04? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: 

WebClient.UploadValuesTaskAsync - Uploads the specified name/value collection to the resource identified by the specified URI as an asynchronous operation using a task object. These methods do not block the calling thread. http://msdn.microsoft.com/en-us/library/system.net.webclient.uploadvaluestaskasync.aspx 


Q24. - (Topic 2) 

You have the following code. (Line numbers are included for reference only). 

You need to complete the WriteTextAsync method. The solution must ensure that the code is not blocked while the file is being written. 

Which code should you insert at line 12? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: await sourceStream.WriteAsync(encodedText, 0, encodedText.Length); 

The following example has the statement await sourceStream.WriteAsync(encodedText, 0, 

encodedText.Length);, which is a contraction of the following two statements: 

Task theTask = sourceStream.WriteAsync(encodedText, 0, encodedText.Length); 

await theTask; 

Example: The following example writes text to a file. At each await statement, the method immediately exits. When the file I/O is complete, the method resumes at the statement that follows the await statement. Note that the async modifier is in the definition of methods that use the await statement. 

public async void ProcessWrite() 

string filePath = @"temp2.txt"; 

string text = "Hello Worldrn"; 

await WriteTextAsync(filePath, text); 

private async Task WriteTextAsync(string filePath, string text) 

byte[] encodedText = Encoding.Unicode.GetBytes(text); 

using (FileStream sourceStream = new FileStream(filePath, 

FileMode.Append, FileAccess.Write, FileShare.None, 

bufferSize: 4096, useAsync: true)) 

await sourceStream.WriteAsync(encodedText, 0, encodedText.Length); 

}; 

Reference: Using Async for File Access (C# and Visual Basic) 

https://msdn.microsoft.com/en-us/library/jj155757.aspx 


Q25. - (Topic 2) 

You are testing an application. The application includes methods named CalculateInterest and LogLine. The CalculateInterest() method calculates loan interest. The LogLine() method sends diagnostic messages to a console window. 

The following code implements the methods. (Line numbers are included for reference only.) 

You have the following requirements: 

. The CalculateInterest() method must run for all build configurations. . The LogLine() method must run only for debug builds. 

You need to ensure that the methods run correctly. 

What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.) 

A. Insert the following code segment at line 01: 

#region DEBUG 

Insert the following code segment at line 10: 

#endregion 

B. Insert the following code segment at line 01: 

[Conditional("DEBUG")] 

C. Insert the following code segment at line 05: 

#region DEBUG 

Insert the following code segment at line 07: 

#endregion 

D. Insert the following code segment at line 10: 

[Conditional("DEBUG")] 

E. Insert the following code segment at line 01: 

#if DEBUG 

Insert the following code segment at line 10: 

#endif 

F. Insert the following code segment at line 10: 

[Conditional("RELEASE")] 

G. Insert the following code segment at line 05: 

#if DEBUG 

Insert the following code segment at line 07: 

#endif 

Answer: D,G 

Reference: http://stackoverflow.com/questions/2104099/c-sharp-if-then-directives-for-debug-vs-release 


Q26. DRAG DROP - (Topic 2) 

You have an application that uses paging. Each page displays 10 items from a list. 

You need to display the third page. (Develop the solution by selecting and ordering the required code snippets. You may not need all of the code snippets.) 

Answer: 


Q27. - (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.WriteEndDocument(); 

B. binary.WriteEndDocumentAsync(); 

C. binary.WriteEndElementAsync(); 

D. binary.Flush(); 

Answer:

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 


Q28. - (Topic 1) 

You are creating a console application by using C#. 

You need to access the application assembly. 

Which code segment should you use? 

A. Assembly.GetAssembly(this); 

B. this.GetType(); 

C. Assembly.Load(); 

D. Assembly.GetExecutingAssembly(); 

Answer:

Explanation: 

Assembly.GetExecutingAssembly - Gets the assembly that contains the code that is currently executing. http://msdn.microsoft.com/en-us/library/system.reflection.assembly.getexecutingassembly(v=vs.110).aspx 

Assembly.GetAssembly - Gets the currently loaded assembly in which the specified class is defined. http://msdn.microsoft.com/en-us/library/system.reflection.assembly.getassembly.aspx 


Q29. - (Topic 1) 

You have a List object that is generated by executing the following code: 

You have a method that contains the following code (line numbers are included for reference only): 

You need to alter the method to use a lambda statement. How should you rewrite lines 03 through 06 of the method? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q30. - (Topic 2) 

You are modifying an application that processes loans. The following code defines the Loan class. (Line numbers are included for reference only.) 

Loans are restricted to a maximum term of 10 years. The application must send a notification message if a loan request exceeds 10 years. 

You need to implement the notification mechanism. 

Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.) 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: B,D