A communications ____ is used for transporting data over a network.

You can block logical ports from invaders and make your computer invisible to others on the Internet by installing ________

A) a firewall B) antivirus software C) a packet filter D) a packet sniffer

If you wanted to display the day of the week using the DatePart function, you would put ________ in the interval argument

Fill in the blank(s) with correct word