Use the ______ element to contain a table data cell

Which of the following commands would a technician use to gather the IP addresses of all devices between a specific workstation and a printer?

A. TRACERT B. PING C. NSLOOKUP D. IPCONFIG

A virus or worm can have a payload that installs a(n) ____________________ door or trap door component in a system, which allows the attacker to access the system at will with special privileges.

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