Most operating systems create a significant number of temporary files in the course of operation. Which one of the following might leave behind "footprints" if the computer is not shut down gracefully?

A client wants to extend the range of their wireless network without running wires throughout the small office. Which of the following could be implemented with the LEAST administrative effort?

A. Install a repeater at the end of the office. B. Install an 802.11n router and change all NICS to match. C. Install a WAP in the middle of the office. D. Install an additional router to help with congestion

All of the following controls are preventive controls EXCEPT:

a. Fencing b. Surveillance cameras c. Firewalls d. Bollards