?When the footer is the last element in a page body, the _____ pseudo-element is used to add a placeholder element after the footer.

Through a process called ________, individuals and organizations register a unique domain name with a service organization such as InterNIC, and are assigned a unique IP address that will be associated with that domain name.

a. host name b. domain name registration c. top-level domain d. domain name

Using the UML graphical notation for object classes, design the following object classes, identifying attributes and operations. Use your own experience to decide on the attributes and operations that should be associated with these objects.

• a messaging system on a mobile (cell) phone or tablet • a printer for a personal computer • a personal music system • a bank account • a library catalogue