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Q121. DRAG DROP - (Topic 1) 

You are developing a class named ExtensionMethods. 

You need to ensure that the ExtensionMethods class implements the IsEmail() extension method on string objects. 

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: 

Q122. - (Topic 2) 

You plan to store passwords in a Windows Azure SQL Database database. 

You need to ensure that the passwords are stored in the database by using a hash algorithm, 

Which cryptographic algorithm should you use? 

A. ECDSA 

B. RSA-768 

C. AES-256 

D. SHA-256 

Answer: D 

Q123. - (Topic 1) 

You are developing an application that accepts the input of dates from the user. 

Users enter the date in their local format. The date entered by the user is stored in a string variable named inputDate. The valid date value must be placed in a DateTime variable named validatedDate. 

You need to validate the entered date and convert it to Coordinated Universal Time (UTC). The code must not cause an exception to be thrown. 

Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: A 

Explanation: 

AdjustToUniversal parses s and, if necessary, converts it to UTC. Note: The DateTime.TryParse method converts the specified string representation of a date and time to its DateTime equivalent using the specified culture-specific format information and formatting style, and returns a value that indicates whether the conversion succeeded. 

Q124. - (Topic 2) 

You are developing an application that includes methods named ConvertAmount and TransferFunds. 

You need to ensure that the precision and range of the value in the amount variable is not lost when the TransferFunds() method is called. 

Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: A 

Explanation: The double keyword signifies a simple type that stores 64-bit floating-point values. 

The float keyword signifies a simple type that stores 32-bit floating-point values. 

Reference: double (C# Reference) 

Q125. - (Topic 1) 

An application includes a class named Person. The Person class includes a method named GetData. 

You need to ensure that the GetData() from the Person class. 

Which access modifier should you use for the GetData() method? 

A. Internal 

B. Protected 

C. Private 

D. Protected internal 

E. Public 

Answer: B 

Explanation: 

Protected - The type or member can be accessed only by code in the same class or structure, or in a class that is derived from that class. http://msdn.microsoft.com/en-us/library/ms173121.aspx The protected keyword is a member access modifier. A protected member is accessible within its class and by derived class instances. 

Q126. - (Topic 2) 

You are implementing a method named ProcessReports that performs a long-running task. The ProcessReports() method has the following method signature: 

public void ProcessReports(List<decimal> values,CancellationTokenSource cts, CancellationToken ct) 

If the calling code requests cancellation, the method must perform the following actions: 

. Cancel the long-running task. 

. Set the task status to TaskStatus.Canceled. 

You need to ensure that the ProcessReports() method performs the required actions. 

Which code segment should you use in the method body? 

A. if (ct.IsCancellationRequested) return; 

B. ct.ThrowIfCancellationRequested() ; 

C. cts.Cancel(); 

D. throw new AggregateException(); 

Answer: B 

Q127. - (Topic 1) 

You are developing an application that includes a class named Order. The application will store a collection of Order objects. 

The collection must meet the following requirements: 

Use strongly typed members. 

Process Order objects in first-in-first-out order. 

Store values for each Order object. 

. Use zero-based indices. 

You need to use a collection type that meets the requirements. 

Which collection type should you use? 

A. Queue<T> 

B. SortedList 

C. LinkedList<T> 

D. HashTable 

E. Array<T> 

Answer: A 

Explanation: 

Queues are useful for storing messages in the order they were received for sequential processing. Objects stored in a Queue<T> are inserted at one end and removed from the other. http://msdn.microsoft.com/en-us/library/7977ey2c.aspx 

Q128. - (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: D 

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 

Q129. - (Topic 2) 

You are developing an application in C#. 

The application uses exception handling on a method that is used to execute mathematical calculations by using integer numbers. 

You write the following catch blocks for the method (line numbers are included for reference only): 

You need to add the following code to the method: 

At which line should you insert the code? 

A. 01 

B. 03 

C. 05 

D. 07 

Answer: A 

Q130. - (Topic 1) 

You are creating an application that manages information about your company's products. The application includes a class named Product and a method named Save. 

The Save() method must be strongly typed. It must allow only types inherited from the Product class that use a constructor that accepts no parameters. 

You need to implement the Save() method. Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: D