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May 18, 2017

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Q21. - (Topic 2) 

You are developing an application. 

The application contains the following code segment (line numbers are included for reference only): 

When you run the code, you receive the following error message: "Cannot implicitly convert type 'object'' to 'inf. An explicit conversion exists (are you missing a cast?)." 

You need to ensure that the code can be compiled. 

Which code should you use to replace line 05? 

A. var2 = ((List<int>) array1) [0]; 

B. var2 = array1[0].Equals(typeof(int)); 

C. var2 = Convert.ToInt32(array1[0]); 

D. var2 = ((int[])array1)[0]; 

Answer:

Explanation: Make a list of integers of the array with = ( (List<int>)arrayl) then select the first item in the list with [0]. 


Q22. - (Topic 1) 

You are developing an application that uses the Microsoft ADO.NET Entity Framework to retrieve order information from a Microsoft SQL Server database. The application includes the following code. (Line numbers are included for reference only.) 

The application must meet the following requirements: 

. Return only orders that have an OrderDate value other than null. 

. Return only orders that were placed in the year specified in the OrderDate property or in a later year. 

You need to ensure that the application meets the requirements. 

Which code segment should you insert at line 08? 

A. Where order.OrderDate.Value != null && order.OrderDate.Value.Year > = year 

B. Where order.OrderDate.Value = = null && order.OrderDate.Value.Year = = year 

C. Where order.OrderDate.HasValue && order.OrderDate.Value.Year = = year 

D. Where order.OrderDate.Value.Year = = year 

Answer:

Explanation: *For the requirement to use an OrderDate value other than null use: OrderDate.Value != null 

*For the requirement to use an OrderDate value for this year or a later year use: OrderDate.Value>= year 


Q23. - (Topic 1) 

You are developing an application that will transmit large amounts of data between a client computer and a server. You need to ensure the validity of the data by using a cryptographic hashing algorithm. Which algorithm should you use? 

A. ECDsa 

B. RNGCryptoServiceProvider 

C. Rfc2898DeriveBytes 

D. HMACSHA512 

Answer:


Q24. 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: 


Q25. - (Topic 2) 

An application uses X509 certificates for data encryption and decryption. The application stores certificates in the Personal certificates collection of the Current User store. On each computer, each certificate subject is unique. 

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

The LoadCertificate() method must load only certificates for which the subject exactly matches the searchValue parameter value. 

You need to ensure that the LoadCertificate() method loads the correct certificates. 

Which code segment should you insert at line 06? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q26. DRAG DROP - (Topic 1) 

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. 

You have the following requirements: 

. The CalculateInterest() method must run for all build configurations. 

. The LogLine() method must be called only for debug builds. 

You need to ensure that the methods run correctly. 

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: 


Q27. DRAG DROP - (Topic 1) 

You are developing an application that includes a class named Customer. 

The application will output the Customer class as a structured XML document by using the following code segment: 

You need to ensure that the Customer class will serialize to XML. 

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: 


Q28. HOTSPOT - (Topic 1) 

You are developing an application that includes a Windows Communication Foundation (WCF) service. The service includes a custom TraceSource object named ts and a method named DoWork. The application must meet the following requirements: 

. Collect trace information when the DoWork() method executes. . Group all traces for a single execution of the DoWork() method as an activity that can be viewed in the WCF Service Trace Viewer Tool. 

You need to ensure that the application meets the requirements. 

How should you complete the relevant code? (To answer, select the correct code segment from each drop-down list in the answer area.) 

Answer: 


Q29. DRAG DROP - (Topic 2) 

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. 

You have the following code: Which code segments should you include in Target 1, Target 2 and Target 3 to complete the code? (To answer, drag the appropriate code segments to the correct targets 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: 


Q30. - (Topic 2) 

You are developing an application that includes a class named Employee and a generic list 

of employees. The following code segment declares the list of employees: 

List<Employee> employeesList = new List<Employee>(); 

You populate the employeesList object with several hundred Employee objects. 

The application must display the data for five Employee objects at a time. 

You need to create a method that will return the correct number of Employee objects. 

Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:



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