___________ is a mathematical operation that compares two binary digits and gives a result of 1 or 0. ?If both binary digits being compared have a value of 1, the result is 1. If one digit is 0 and the other is 1, or if both digits are 0, the result is 0.

If you want the records in a table to be sorted alphabetically by last name and then alphabetically by first name within each last name, you would need to:

A) sort Lastname as the innermost field in ascending order. B) sort Lastname as the outermost field in descending order. C) sort Firstname as the innermost field in descending order. D) sort Lastname as the outermost field in ascending order.

On Twitter, users maintain a ____, in which each post contains, at most, 140 characters.

A. content blog B. microblog C. syndicated blog D. master blog