A ____ uses public network connections to establish private communication by encrypting the data transmitted between the two computers at each end of the connection.

How many ICMP messages are sent by default when using the ping command on a Windows machine?

A) 5 B) 4 C) 1 D) 10

A(n) ____________________ is a special effect that determines how a slide appears as it enters or leaves the screen.

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