The _____ unit of the central processing unit (CPU) performs mathematical calculations and makes logical comparisons.
Fill in the blank(s) with the appropriate word(s).
arithmetic and logic
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Which one of the following statements correctly creates a List object named friends List that holds strings?
a. string friends List = new List friends List(string);
c. List
Assume the file Alphabet.txt contains 26 records, the lowercase letters of the alphabet in ascending order. What happens when the following code is executed?
``` Dim letter As String Dim sr As IO.StreamReader = IO.File.OpenText"Alphabet.txt" Do While Not sr.EndOfStream letter = sr.ReadLine Dim sw As IO.StreamWriter = IO.File.CreateText(letter.ToUpper & "txt" sw.WriteLine(letter.ToUpper & "xt" sw.Close() Loop sr.Close() ``` (A) A"too many files open"error is produced. (B) Twenty-six files are created and named with one of the uppercase letters of the alphabet and each containing only its own file name. (C) A file called z is created containing all of the letters of the alphabet in lowercase. (D) An "nvalid file name"error is produced.
What are the two things that a system needs to do to provide confidentiality?
What will be an ideal response?
In the accompanying figure, the circled item is the ____.
A. cursor B. insertion point C. Signal bar D. Word counter