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Visual Basic .net Quiz

Description: Visual Basic .net Quiz
Number of Questions: 10
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Tags: .net vb
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Which operator is evaluated first?

  1. NOT

  2. AND

  3. XOR

  4. OR

  5. They are always evaluated left-to-right.


Correct Option: A

AI Explanation

To answer this question, you need to understand the order of precedence for logical operators.

The correct answer is A) NOT.

The NOT operator is evaluated first because it has the highest precedence among the given options. The NOT operator is used to negate the value of a boolean expression. It takes a single operand and returns the opposite boolean value.

After the NOT operator, the order of precedence for the other logical operators is as follows:

B) AND - The AND operator is evaluated after the NOT operator. It returns true only if both operands are true.

C) XOR - The XOR (exclusive OR) operator is evaluated after the AND operator. It returns true if exactly one of the operands is true, but not both.

D) OR - The OR operator is evaluated after the XOR operator. It returns true if at least one of the operands is true.

E) They are always evaluated left-to-right - This option is incorrect because logical operators have a specific order of precedence.

Therefore, the correct answer is A) NOT. It is evaluated first among the given options.

The right side of an assignment statement will hold:

  1. a variable.

  2. an object property.

  3. an expression.

  4. Both a and b.

  5. All of the above.


Correct Option: C
Explanation:

In programming, an assignment statement is used to assign a value to a variable or object property. The value on the right side of the assignment statement is typically an expression, which can be a combination of literals, variables, and operators that evaluates to a value.

Option A) A variable - This option is incorrect because a variable is typically on the left side of an assignment statement, indicating where the value will be stored.

Option B) An object property - This option is incorrect because the right side of an assignment statement typically holds the value that will be assigned to the object property.

Option C) An expression - This option is correct because an expression is a valid value that can be assigned to a variable or object property.

Option D) Both a and b - This option is incorrect because a variable is typically on the left side of an assignment statement, indicating where the value will be stored, while an object property is typically on the left side of a property assignment statement.

Option E) All of the above - This option is incorrect because only option C is correct.

The correct answer is option C) an expression.

Which function will return the monthly payments of a loan?

  1. Pay (Rate, PV, Nper)

  2. Pmt (Rate, Nper, PV)

  3. FV (Rate, Nper, Pmt)

  4. FV (Rate, Nper, PV)

  5. None of the above.


Correct Option: B
Explanation:

To solve this question, the user needs to know the financial functions in Excel and their respective parameters. The user must be familiar with the concept of a loan and its components, such as the principal, interest rate, and term.

Option A: The Pay function is not a recognized financial function in Excel. Therefore, option A is incorrect.

Option B: The Pmt function returns the periodic payment required to pay off a loan, given the interest rate, number of payments, and loan amount. This is the correct function to use for calculating the monthly payments of a loan. Therefore, option B is the correct answer.

Option C: The FV function is used to calculate the future value of an investment or loan, given the interest rate, number of payments, and periodic payment amount. Therefore, option C is incorrect.

Option D: The FV function is used to calculate the future value of an investment or loan, given the interest rate, number of payments, and present value. Therefore, option D is incorrect.

Option E: None of the above functions exist in Excel. Therefore, option E is incorrect.

The answer is: B. Pmt (Rate, Nper, PV)

Which function returns the numbers represented in the string "$56.7"?

  1. Abs

  2. CDbl

  3. Int

  4. Val


Correct Option: B
Explanation:

To solve this question, you need to know about the different functions in programming that are used to convert strings into numbers.

A. Abs - This function returns the absolute value of a number. It doesn't convert a string to a number.

B. CDbl - This function in Visual Basic (and some other programming languages) converts a string to a Double data type, which is a type of floating point number. This would be able to convert the string "$56.7" to the number 56.7.

C. Int - This function converts number a to an integer. It doesn't convert a string to a number.

D. Val - This function in Visual Basic (and some other programming languages) returns the numbers found in a string. It would also be able to convert the string "$56.7" to the number 56.7, but it would stop at the first non-numeric character, so it wouldn't handle the dollar sign correctly.

So, the correct answer is:

B. CDbl

What will the function Val ($165.30) return?

  1. 165

  2. 165.3

  3. $165.30

  4. An error


Correct Option: D
Explanation:

The Val function in VBA is used to convert a string to a number. The string must contain only numeric characters, and the function will stop reading the string as soon as it encounters a non-numeric character.

In the case of Val($165.30)`, the function will encounter the dollar sign and the decimal point, which are not numeric characters. Therefore, the function will return an error.

Here is a table that summarizes the different options and their correctness:

Option Correctness Reason
A. 165 Incorrect The function will stop reading the string after the dollar sign.
B. 165.3 Incorrect The function will stop reading the string after the decimal point.
C. $165.30 Incorrect The function does not return the string itself. It returns the numeric value that the string represents.
D. Error Correct The function will encounter non-numeric characters and return an error.

Which function displays a pop-up window?

  1. MsgBox

  2. InputBox

  3. TextBox

  4. Both a and b.

  5. All of the above.


Correct Option: A
Explanation:

The function that displays a pop-up window in VBA is the MsgBox function. This function is used to display a message in a dialog box and can include buttons for the user to click.

Option A) MsgBox - This option is correct because this function displays a pop-up window. Option B) InputBox - This option is incorrect because this function displays an input box to prompt the user for input. Option C) TextBox - This option is incorrect because this is a control used to display or enter text in a user form. Option D) Both a and b - This option is incorrect because option B is incorrect. Option E) All of the above - This option is incorrect because option C is incorrect.

Therefore, the correct answer is option A, MsgBox.

Which is true about the prompt argument?

  1. It can be made of multiple values concatenated into one string.

  2. It can include the vbCrLf constant.

  3. It can include the ampersand symbol to concatenate strings.

  4. Both a and b.

  5. All of the above.


Correct Option: E
Explanation:

The correct answer is E. All of the above.

The prompt argument in VBA can be made of multiple values concatenated into one string. For example, the following code will display a prompt that says "Enter your name and age:":

prompt = "Enter your name and age:" & vbCrLf & "Name: " & _ vbTab & "Age: "

The prompt argument can also include the vbCrLf constant, which represents a carriage return and line feed. This will cause the prompt to be displayed on two separate lines.

Finally, the prompt argument can include the ampersand symbol to concatenate strings. For example, the following code will display a prompt that says "Your name is: [name]":

prompt = "Your name is: "& name

Therefore, all of the options A, B, and C are true about the prompt argument.

Here is a breakdown of the options:

  • Option A: The prompt argument can be made of multiple values concatenated into one string. This is true because the prompt argument is a string, and you can concatenate strings together using the ampersand symbol.
  • Option B: The prompt argument can include the vbCrLf constant. This is true because the vbCrLf constant represents a carriage return and line feed, and you can include any character or string in the prompt argument.
  • Option C: The prompt argument can include the ampersand symbol to concatenate strings. This is true because the ampersand symbol is used to concatenate strings together, and you can use it in the prompt argument.

Therefore, the correct answer is E. All of the above.

  1. use the Val function to convert the Text value.

  2. use the CDbl function to convert the Text value.

  3. use the IsNumeric function to convert the Text value.

  4. Both a and b.

  5. All of the above.


Correct Option: D
Explanation:

To process a number typed in a TextBox, the programmer must convert the Text value to a numeric data type. This is necessary because the Text property of a TextBox control returns a string value, which cannot be used in mathematical operations without first being converted.

Now let's go through each option and explain why it is right or wrong:

A. use the Val function to convert the Text value: This option is partially correct. The Val function is one way to convert a string to a numeric data type, but it is not the only way. The Val function converts a string to a Double data type, so it may not be appropriate if the value in the TextBox is an Integer.

B. use the CDbl function to convert the Text value: This option is partially correct. The CDbl function is another way to convert a string to a numeric data type, but it is not the only way. The CDbl function converts a string to a Double data type, so it may not be appropriate if the value in the TextBox is an Integer.

C. use the IsNumeric function to convert the Text value: This option is incorrect. The IsNumeric function does not convert a string to a numeric data type. Instead, it checks whether a value is numeric and returns a Boolean value.

D. Both a and b: This option is correct. Using either the Val or CDbl function can convert a string to a numeric data type. However, the programmer should choose the appropriate function depending on the data type of the value in the TextBox.

E. All of the above: This option is incorrect. While options A and B are correct, option C is not a valid way to convert a string to a numeric data type.

Therefore, the answer is: D. Both a and b.

Which statements are optional in an If...Then statement?

  1. If

  2. Then

  3. Else

  4. Both a and b.

  5. All of the above.


Correct Option: C
Explanation:

To solve this question, the user must know the basic structure of an If...Then statement.

An If...Then statement is a conditional statement that tests whether a certain condition is true or false. It has two main parts: the "if" clause, which tests the condition, and the "then" clause, which specifies what to do if the condition is true.

Now let's go through each option and explain why it is right or wrong:

A. If: This statement is not optional in an If...Then statement. It is the first part of the statement and is necessary to test the condition.

B. Then: This statement is not optional in an If...Then statement. It is the second part of the statement and is necessary to specify what to do if the condition is true.

C. Else: This statement is optional in an If...Then statement. It provides an alternative action to take if the condition is false. If a programmer does not want to specify an alternative action, they can omit the Else statement.

D. Both a and b: This option is incorrect because only statement c (Else) is optional, while statements a (If) and b (Then) are required.

E. All of the above: This option is incorrect. Only statement c (Else) is optional, while statements a (If) and b (Then) are required.

Therefore, the correct answer is: C. Else.

How many RadioButtons in a Group Box can be selected at the same time?

  1. 1

  2. 2

  3. 3

  4. 4


Correct Option: A
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