To provide the network number and node number of a machine. Not too useful without a network mask to separate them.
Answer: Planning the solution, look and feel of the software interface
Answer:
Depends on how many PowerPoint files you want to store and how long they are. I'd recommend at least a 256GB hard drive to store your OS and software and then leave space for PowerPoints.
You are correct there. the * operand tells Excel to multiple the two cells or variables.