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Vendor: Microsoft
Exam Code: 70-483
Exam Name: Microsoft Programming in C#

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QUESTION 201
You are developing an application.
The application includes classes named Employee and Person and an interface named IPerson.
The Employee class must meet the following requirements:
- It must either inherit from the Person class or implement the IPerson interface.
- It must be inheritable by other classes in the application.
You need to ensure that the Employee 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: BD

QUESTION 202
You are developing an application that includes a class named Customer and a generic list of customers.
The following code segment declares the list of customers:
List<Customer> customersList = new List<Customer> () ;
You populate the customersList object with several hundred Customer objects.
The application must display the data for five Customer objects at a time.
You need to create a method that will return the correct number of Customer objects.
Which code segment should you use?
 

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: A

QUESTION 203
You are developing an application that will convert data into multiple output formats.
The application includes the following code. (Line numbers are included for reference only.)
 
You are developing a code segment that will produce tab-delimited output.
All output routines implement the following interface:
 
You need to minimize the completion time of the GetOutput() method.
Which code segment should you insert at line 06?
 

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: B

QUESTION 204
Which of the following code will you use to encrypt an array called encryptedData that can be encrypted by the current user, and without using any entropy?

A.    ProtectedData.Unprotect(encryptedData, null, DataProtectionScope .CurrentUser);
B.    ProtectedData.Protect(encryptedData, null, DataProtectionScope .LocalMachine);
C.    ProtectedData.Decrypt(encryptedData, null, DataProtectionScope .CurrentUser);
D.    ProtectedData.Unprotect(encryptedData, null, DataProtectionScope .LocalMachine);

Answer: B

QUESTION 205
If the user is typing data into a TextBox and types an invalid character, which of the following actions would be inappropriate for the program to take?

A.    Change the TextBox's background color to indicate the error.
B.    Silently discard the character.
C.    Display an asterisk next to the TextBox to indicate the error.
D.    Display a message box telling the user that there is an error.

Answer: D

QUESTION 206
If the user types an invalid value into a TextBox and moves focus to another TextBox, which of the following actions would be inappropriate for the program to take?

A.    Force focus back into the TextBox that contains the error.
B.    Change the first TextBox's background color to indicate the error.
C.    Change the first TextBox's font to indicate the error.
D.    Display an asterisk next to the first TextBox to indicate the error.

Answer: A

QUESTION 207
If the user enters some invalid data on a form and then clicks the form's Accept button, which of the following actions would be appropriate for the program take?

A.    Change the background color of TextBoxes containing invalid values to indicate the errors.
B.    Display a message box telling the user that there is an error.
C.    Do not close the form until the user corrects all the errors.
D.    All the above.

Answer: D

QUESTION 208
Which of the following methods returns true if a regular expression matches a string?

A.    Regex.Matches
B.    Regex.IsMatch
C.    Regexp.Matches
D.    String.Matches

Answer: B

QUESTION 209
Which of the following regular expressions matches the Social Security number format ###-##- #### where # is any digit?

A.    ^###-##-####$
B.    ^d3-d2-d4$
C.    ^d{3}-d{2}-d{4}$
D.    ^[0-9]3-[0-9]2-[0-9]4$

Answer: C

QUESTION 210
Which of the following regular expressions matches a username that must include between 6 and 16 letters, numbers, and underscores?

A.    ^[a-zA-Z0-9_]?{6}$
B.    ^[a-zA-Z0-9_]{6,16}$
C.    ^[A-Z0-9a-z_]?$
D.    ^w{16}?$

Answer: B

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