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2021 Nov exam 98-361:

Q21. You are writing code for a business application by using C#. Write the following statement to declare an array: 

int[] numbers = { 1, 2, 3, 4, 5, }; 

Now, you need to access the second item in this array (the number 2). Which of the following expression should you use? 

A. numbers[0] 

B. numbers[1] 

C. numbers[2] 

D. numbers[3] 

Answer: B 


Q22. You need to update the Products table and remove all discontinued products. When the products are discontinued, the value of the field Discontinued is set to true. Which of the following SQL statements should you use to make changes to the Products table? 

A. INSERT 

B. SELECT 

C. UPDATE 

D. DELETE 

Answer: D 


Q23. You are studying various sorting algorithms to understand, analyze, and compare the various sorting techniques. Which of the following techniques should you utilize when using the BubbleSort algorithm? 

A. comparison 

B. comparison and swap 

C. comparison and partition 

D. partition and swap 

Answer: B 


Q24. You are developing a C# program that makes use of a singly linked list. You need to traverse all nodes of the list. Which of the following items will you need to accomplish this requirement? 

A. link to the head node 

B. link to the tail node 

C. data in the head node 

D. data in the tail node 

Answer: A 


Q25. You are developing a new Windows service application. The application contains three different Windows services. Before these services can be used, they must be installed in the Windows service database. What action should you take to ensure that your services can be installed by a Windows installer tool? 

A. Copy the service assembly to the global assembly cache. 

B. Add an event log installer to the Windows service project. 

C. Inherit the service from a ServiceBase class. 

D. Add a service installer to the Windows service project. 

Answer: D 


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Q26. You are in the process of developing a new software application. As defects are reported, you take the necessary steps to fix them. You need to make sure that each new fix doesn’t break anything that was previously working. Which type of testing should you use? 

A. integration testing 

B. system testing 

C. acceptance testing 

D. regression testing 

Answer: D 


Q27. You are writing code for a new method named Process: 

void Draw(object o) 

{ 

} 

The code receives a parameter of type object. You need to cast this object into the type Polygon. At times, the value of o that is passed to the method might not be a valid Polygon value. You need to make sure that the code does not generate any System.InvalidCastException errors while doing the conversions. 

Which of the following lines of code should you use inside the Draw method to accomplish this goal? 

A. Polygon p = (Polygon) o; 

B. Polygon p = o is Polygon; 

C. Polygon p = o as Polygon; 

D. Polygon p = (o != null) ? o as Polygon : (Polygon) o; 

Answer: C 


Q28. You are developing a C# program for a bike rental company. Every night, your application needs to read data from a SQL Server 2000 database and write it to a flat file. This flat file will be transferred to your supplier. 

Which of the following classes shall you use to retrieve the data? Any solution that you suggest must have very little impact of the server while maximizing performance. 

A. DataSet 

B. DataTable 

C. SqlDataReader 

D. OleDbDataReader 

Answer: C 


Q29. You are planning to develop a new software system for your organization. Someone needs to be responsible for developing system manuals and help files. Which of the following participants should you identify for this task? 

A. user interface designer 

B. content developer 

C. user interface designer 

D. technical writer 

Answer: D 


Q30. You are developing a restaurant locator Web sitr in ASP.NET and C#. As users browse through the Web site, each of the Web pages must display a list of the recently viewed restaurant in the lower left corner. You want this information to be available across Web pages and browser restarts but do not want to use server side resources to accomplish this. Which of the following state management techniques will help you accomplish this requirement with minimum effort? 

A. hidden fields 

B. view state 

C. cookies 

D. sessions 

Answer: C