Which microsoft operating system started the process of authenticating users with a user name and password?
a. windows xp
b. windows 95
c. windows 98
d. windows nt

Apower user needs you to install a second type of operating system on his computer to increase efficiency while running some specialized software programs. which installation technique should you use?

Give an example of a case where a two-way handshake to establish a connection could leave one side of the connection live while the other side does not believe there is a connection.

Eye injuries usually occur as a result of all of the following things, except: a) proper machine operation b) battery explosion c) falling or flying debris d) electric welding arc