Define a relation.
What will be an ideal response?
A relation is a two-dimensional table in which:
1. The entries in the table are single-valued; that is, each location in the table contains a single entry.
2. Each column has a distinct name (technically called the attribute name).
3. All values in a column are values of the same attribute (that is, all entries must match the column name).
4. The order of columns is immaterial.
5. Each row is distinct.
6. The order of rows is immaterial.
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A(n) server is a computer that provides services and distributes resources to computers on a network.
Answer the following statement true (T) or false (F)
Write an if statement to do the following. (Assume the variables have been declared. You do not need to declare the variables. Simply construct an if statement.) Hint: You will need to use comparison operators and a logical operator.
If both variables a and b are greater than 0, then increment the value of the variable c by 1.
The visibility of these modifiers increases in this order:
a. private, protected, none (if no modifier is used), and public. b. private, none (if no modifier is used), protected, and public. c. none (if no modifier is used), private, protected, and public. d. none (if no modifier is used), protected, private, and public.
A user has reported that their computer is not working. The user cannot properly explain the computers problem. Which of the following steps should the technician take NEXT in order to resolve the situation?
A. Perform a System Restore on the machine. B. Ask simple questions to further identify the issue. C. Escalate the issue to a manager for further resolution. D. Ask the user to turn the computer off and on again to see if the problem can be recreated