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Q11. - (Topic 1) 

You are developing an application. The application calls a method that returns an array of integers named customerIds. You define an integer variable named customerIdToRemove and assign a value to it. You declare an array named filteredCustomerIds. 

You have the following requirements. 

Remove duplicate integers from the customerIds array. 

Sort the array in order from the highest value to the lowest value. 

Remove the integer value stored in the customerIdToRemove variable from the 

customerIds array. 

You need to create a LINQ query to meet the requirements. 

Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q12. - (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:


Q13. - (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:

Explanation: 

When you define a generic class, you can apply restrictions to the kinds of types that client 

code can use for type arguments when it instantiates your class. If client code tries to instantiate your class by using a type that is not allowed by a constraint, the result is a compile-time error. These restrictions are called constraints. Constraints are specified by using the where contextual keyword. http://msdn.microsoft.com/en-us/library/d5x73970.aspx 


Q14. - (Topic 2) 

You are developing an application that includes the following code segment. (Line numbers are included for reference only.) 

You need to ensure that the DoWork(Widget widget) method runs. 

With which code segment should you replace line 24? 

A. DoWork((Widget)o); 

B. DoWork(new Widget(o)); 

C. DoWork(o is Widget); 

D. DoWork((ItemBase)o); 

Answer:


Q15. - (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. ReRegisterForFinalize() 

B. SuppressFinalize() 

C. Collect() 

D. WaitForFullGCApproach() 

Answer:


Q16. - (Topic 2) 

You are developing an application that will manage customer records. The application includes a method named FindCustomer. 

Users must be able to locate customer records by using the customer identifier or customer name. 

You need to implement the FindCustomer() method to meet the requirement. 

Which two sets of method signatures 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: B,D 


Q17. - (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. 


Q18. - (Topic 2) 

You need to write a method that retrieves data from a Microsoft Access 2013 database. 

The method must meet the following requirements: 

Be read-only. 

Be able to use the data before the entire data set is retrieved. 

Minimize the amount of system overhead and the amount of memory usage. 

Which type of object should you use in the method? 

A. SqlDataAdapter 

B. DataContext 

C. DbDataAdapter 

D. OleDbDataReader 

Answer:

Explanation: OleDbDataReader Class 

Provides a way of reading a forward-only stream of data rows from a data source. 

Example: 

OleDbConnection cn = new OleDbConnection(); 

OleDbCommand cmd = new OleDbCommand(); 

DataTable schemaTable; 

OleDbDataReader myReader; 

//Open a connection to the SQL Server Northwind database. 

cn.ConnectionString = "Provider=SQLOLEDB;Data Source=server;User ID=login; 

Password=password;Initial Catalog=Northwind"; 


Q19. - (Topic 1) 

You are developing an application that includes a class named UserTracker. The application includes the following code segment. (Line numbers are included for reference only.) 

You need to add a user to the UserTracker instance. What should you do? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q20. 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: