If you accidentally delete the /etc/aliases file, how could you easily re-create it (assuming that you had not restarted sendmail)?

Which of the following is an activity that falls into a gray area and might be acceptable Internet use in some organizations but not others?

a. Email b. Online training c. Web meetings d. Online shopping during a break time

A network engineer is conducting an assessment for a customer that wants to implement an 802.11n wireless network. Before the engineer can estimate the number of WAPs needed, it is important to reference which of the following?

A. Network diagram B. Site survey C. Network topology D. PoE requirements