You should leave all rows in Excel ________ until all the formulas are written

Your disc will not eject from the CD/DVD drive even though you have pushed the eject button several times. What is your next step?

A) Replace the drive. B) Remove the drive, remove the drive cover, and use a small screwdriver to push the CD out the front. C) Use a paper clip and the emergency eject hole. D) Remove the computer power connector and reattach; then retry ejecting the disc.

In the context of this book, ____________________ wiring refers to installing cable that fans out in a horizontal star fashion from one or more centralized switches or routers.

Fill in the blank(s) with the appropriate word(s).