Which of the following is a potential drawback to IM?
A) Longer response times on urgent messages
B) Higher data usage costs
C) Availability of user authentication
D) The ability to mimic a one on one conversation
E) Limited number of compatible devices
Answer: C
Explanation: C) The potential drawbacks of IM include security problems (computer viruses, network infiltration, and the possibility that sensitive messages might be intercepted by outsiders), the need for user authentication (making sure that online correspondents are really who they appear to be), the challenge of logging messages for later review and archiving (a legal requirement in some industries), incompatibility between competing IM systems, and spim (unsolicited commercial messages, similar to email spam).
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