A ________ is a value that can be changed each time you run the query

Match the following terms to their meanings:

I. Facilitates a conversation with a partner using two A. IM Internet-connected computers II. Enables three different types of online B. VoIP telephone conversations III. A webcam is recommended for this type C. computer-to-computer of telephone conversation video call IV. Windows uses this networking technology D. Windows Live Call for online voice conversations V. Enables real-time communication over the E. computer-to-computer Internet using typed text voice call

Describe ways to protect files while you are working on them.

What will be an ideal response?