Answer the following questions true (T) or false (F)
1. An interface can contain defined constants as well as method headings or instead of method headings.
2. The Serializable interface is like all the other Java interfaces in that it contains defined constants and method headings.
1. True
2. False
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Write a skeleton script that allows system administration tasks to be performed automatically from a menu-driven interface.
Useful tasks to automate include: ? automatic deletion of core files ? automatic warnings to users that use a lot of CPU time or disk space ? automatic archiving Don’t worry about making them do anything just yet; we’ll fill this in at the end of Chapter 14, “System Administration.” For now, concentrate on making the menu and task selection work properly and just use the echo or print commands to print out what would happen for each selection.
To display a background image once, the value of the background-repeat property should be set to ____.
A. repeat-no B. none C. once D. no-repeat
Virtual reality simulations require special interface devices that transmit the sights, sounds, and sensations of the simulated world to the user.
Answer the following statement true (T) or false (F)
Animation delays are measured in ____________________.
Fill in the blank(s) with the appropriate word(s).