Which type of primary research requires no direct involvement with human subjects?

People sometimes use the term _______________ to refer to all types of combinations including mergers and acquisitions

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

The backbone of the Internet is formed by:

A) Internet Exchange Points (IXPs). B) Tier 1 ISPs. C) Network Access Points (NAPs). D) Metropolitan Area Exchanges (MAEs).