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Q61. – (Topic 1) 

You are developing an application. The application includes classes named Mammal and Animal and an interface named IAnimal. 

The Mammal class must meet the following requirements: . It must either inherit from the Animal class or implement the IAnimal interface. . It must be inheritable by other classes in the application. You need to ensure that the Mammal class meets the requirements. 

Which two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.) 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: A,C 

Explanation: 

When applied to a class, the sealed modifier prevents other classes from inheriting from it. http://msdn.microsoft.com/en-us/library/88c54tsw(v=vs.110).aspx 

Q62. – (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. AssemblyKeyNameAttribute 

B. ObfuscateAssemblyAttribute 

C. AssemblyDelaySignAttribute 

D. AssemblyKeyFileAttribute 

Answer: C,D 

Explanation: 

http://msdn.microsoft.com/en-us/library/t07a3dye(v=vs.110).aspx 

Q63. – (Topic 1) 

You are developing an application by using C#. The application includes the following code segment. (Line numbers are included for reference only.) 

The DoWork() method must throw an InvalidCastException exception if the obj object is not of type IDataContainer when accessing the Data property. 

You need to meet the requirements. Which code segment should you insert at line 07? 

A. var dataContainer = (IDataContainer) obj; 

B. var dataContainer = obj as IDataContainer; 

C. var dataContainer = obj is IDataContainer; 

D. dynamic dataContainer = obj; 

Answer:

Explanation: 

http://msdn.microsoft.com/en-us/library/ms173105.aspx 

Q64. – (Topic 2) 

You are developing an application that will be deployed to multiple computers. You set the assembly name. 

You need to create a unique identity for the application assembly. 

Which two assembly identity attributes should you include in the source code? (Each correct answer presents part of the solution. Choose two.) 

A. AssemblyTitleAttribute 

B. AssemblyCultureAttribute 

C. AssemblyVersionAttribute 

D. AssemblyKeyNameAttribute 

E. AssemblyFileVersion 

…. 

Answer: B,C 

Explanation: The AssemblyName object contains information about an assembly, which you can use to bind to that assembly. An assembly's identity consists of the following: 

Simple name 

Version number 

Cryptographic key pair 

Supported culture 

B: AssemblyCultureAttribute 

Specifies which culture the assembly supports. 

The attribute is used by compilers to distinguish between a main assembly and a satellite 

assembly. A main assembly contains code and the neutral culture's resources. A satellite 

assembly contains only resources for a particular culture, as in 

[assembly:AssemblyCultureAttribute("de")] 

C: AssemblyVersionAttribute 

Specifies the version of the assembly being attributed. 

The assembly version number is part of an assembly's identity and plays a key part in 

binding to the assembly and in version policy. 

Q65. – (Topic 2) 

You have the following code (line numbers are included for reference only): 

You need to ensure that if an exception occurs, the exception will be logged. Which code should you insert at line 28? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: * XmlWriterTraceListener 

Directs tracing or debugging output as XML-encoded data to a TextWriter or to a Stream, 

such as a FileStream. 

Q66. – (Topic 1) 

You are developing an application by using C#. The application includes the following code segment. (Line numbers are included for reference only.) 

The DoWork() method must not throw any exceptions when converting the obj object to the IDataContainer interface or when accessing the Data property. 

You need to meet the requirements. Which code segment should you insert at line 07? 

A. var dataContainer = (IDataContainer)obj; 

B. dynamic dataContainer = obj; 

C. var dataContainer = obj is IDataContainer; 

D. var dataContainer = obj as IDataContainer; 

Answer:

Explanation: 

As – The as operator is like a cast operation. However, if the conversion isn't possible, as returns null instead of raising an exception. http://msdn.microsoft.com/en-us/library/cscsdfbt(v=vs.110).aspx 

Q67. – (Topic 2) 

You are modifying an existing application. 

The application includes a Loan class and a Customer class. The following code segment defines the classes. 

You populate a collection named customer-Collection with Customer and Loan objects by using the following code segment: 

You create a largeCustomerLoans collection to store the Loan objects by using the following code segment: 

Collection<Loan> largeCustomerLoans = new Collection<Loan>(); 

All loans with an Amount value greater than or equal to 4000 must be tracked. 

You need to populate the largeCustomerLoans collection with Loan objects. 

Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: Must add to the largeCustomerLoans collection, not the customerLoanCollection. 

We iterate through each customer in customerCollection and check each loan belonging to this customer. 

Q68. – (Topic 2) 

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

public void ProcessData(List<decimal> values, CancellationTokenSource source, CancellationToken token) 

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 ProcessData() method performs the required actions. 

Which code segment should you use in the method body? 

A. if (token.IsCancellationRequested) return; 

B. throw new AggregateException(); 

C. token.ThrowIfCancellationRequested(); 

D. source.Cancel(); 

Answer:

Q69. – (Topic 2) 

You need to write a console application that meets the following requirements: 

. If the application is compiled in Debug mode, the console output must display Entering debug mode. . If the application is compiled in Release mode, the console output must display Entering release mode. 

Which code should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: Programmatically detecting Release/Debug mode (.NET) 

Boolean isDebugMode = false; 

#if DEBUG 

isDebugMode = true; 

#endif 

Reference: http://stackoverflow.com/questions/654450/programmatically-detecting-release-debug-mode-net 

Q70. – (Topic 1) 

You are developing an application by using C#. 

The application includes an object that performs a long running process. 

You need to ensure that the garbage collector does not release the object's resources until 

the process completes. 

Which garbage collector method should you use? 

A. RemoveMemoryPressure() 

B. ReRegisterForFinalize() 

C. WaitForFullGCComplete() 

D. KeepAlive() 

Answer:

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