Online __________ is/are two or more online personas with the same name or user name.

Any ________ validation is a means of using the Input Message available through the data validation tools to communicate data entry rules and/or expectations to the user

A) data B) input C) text D) value

The operating system performs________to move the first process and its dependent data into memory, and to move the new processes and its dependent data into the processor.

a) time slicing. b) concurrency. c) context switching. d) None of the above.