Synchronous communications that involve conferencing between parties causing text-based messages to pop-up on a user's machine is referred to as ________

To promote an item in an outline, you can press ________

A) Ctrl+Tab B) Tab C) Ctrl+Shift+Tab D) Shift+Tab

Which file must be included in any program that uses the cin or cout objects?

A. namespace B. stream C. io D. iostream