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Q1. You need to gain a better understanding of the solution before writing the program. You decide to develop an algorithm that lists all necessary steps to perform an operation in the correct order. Any technique that you use should minimize complexity and ambiguity. Which of the following techniques should you use?
A. flowchart
B. decision table
C. C# program
D. A paragraph in English
Answer: A
Q2. You are C# developer who is developing a Windows application. You write the following code:
Object o;
Later in the code, you need to assign the value in the variable o to an object of Rectangle type. You expect that at runtime the value in the variable o is compatible with the Rectangle class. However, you need to make sure that no exceptions are raised when the value is assigned. Which of the following code should you use?
A. Rectangle r = (Rectangle) o;
B. Rectangle r = o;
C. Rectangle r = o as Rectangle;
D. Rectangle r = o is Rectangle;
Answer: D
Q3. You are developing a C# program. You write the following code:
01: int count = 0;
02: while (count < 5)
03: {
04: if (count == 3)
05: break;
06: count++;
07: }
How many times will the control enter the while loop?
A. 5
B. 4
C. 3
D. 2
Answer: B
Q4. You need a Windows Form similar to the W_RecForm form that is being already used by the application. However, you need a couple of extra controls on your form that are not available on W_RecForm. You need to make sure that you accomplish this requirement with the least coding effort. In future, if the W_RecForm is enhanced, you need to make sure that those enhancements are available in your form as well. What should you do?
A. Copy the code for W_RecForm to a new form. Modify the code for the new form.
B. Use visual inheritance to inherit the new form from W_RecForm. Add the new functionality to the newcontrol.
C. Modify the code for W_RecForm. Copy the code to create a new form.
D. Convert the code in the W_RecForm to a custom control. Use the new custom control in all places.
Answer: B
Q5. Suppose that you are writing code for a class named Product. You need to make sure that the data members of the class are initialized to their correct values as soon as you create an object of the Product class. The initialization code should always be executed. What should you do?
A. Create a static method in the Product class to initialize data members.
B. Create a constructor in the Product class to initialize data members.
C. Create a static property in the Product class to initialize data members.
D. Create an event in the Product class to initialize data members.
Answer: B
Q6. The application you are developing needs to write data to a flat file that include items such as a five-digit integer key, followed by a 20-character customer name, followed by two date and time fields. Your solution should be as fast as possible and should create smallest size data file. Which of the following classes should you use?
A. FileStream
B. StreamWriter
C. BinaryWriter
D. DataWriter
Answer: C
Q7. You are updating an existing Windows Forms application. The form hosts a DateTimePicker control named dateTimePicker1. You need to write code that executes when the value of the dateTimePicker1 control is changed. You write a method, ProcessValueChanged, that contains the code you want to execute. What code should you write to invoke the ProcessValueChanged method? Any code that your write must not affect existing functionality of the application.
A. dateTimePicker1.ValueChanged += new System.EventHandler( ProcessValueChanged);
B. dateTimePicker1.ValueChanged = new System.EventHandler( ProcessValueChanged);
C. dateTimePicker1.Value += new System.EventHandler( ProcessValueChanged);
D. dateTimePicker1.Value = new System.EventHandler( ProcessValueChanged);
Answer: A
Q8. 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
Q9. You are developing a user interface component that responds to user actions such as keystrokes. Which of the following programming constructs should you use to accomplish this requirement?
A. event
B. class
C. delegate
D. property
Answer: A
Q10. You are planning to develop a new software system for your organization. You need to review the system’s technical blueprint. Which of the following participants is responsible for providing the technical blueprint?
A. user interface designer
B. developer
C. architect
D. technical writer
Answer: C