________ combines selected cells into a single cell and then centers the text within that single cell

The principle that a rule keeps related values synchronized is called ________

A) criteria B) entity relationship C) Quick Start D) referential integrity

Jeff, a user, is having a problem with a POTS line. Which of the following tools would Jeff use to make sure the phone lines have a dial tone?

A. Loopback plugs B. Butt set C. Cable certifier D. Toner probe