The columns in a column chart emphasize the distinct values of each data point.

Why do you think integer expressions must be preceded by an @ sign?

What will be an ideal response?

COGNITIVE ASSESSMENT Which of the following is NOT true about network security?

A. The operating system on a network does not record unsuccessful sign-in attempts. B. A user account enables a user to sign in to a network or computer.  C. Some operating systems allow the network administrator to assign passwords to files and commands. D. Permissions define who can access resources and when they can access the resources.