The options for this question are: A. Software as a web service B. Cellular networks C. TQM D. Internet telephony E. The World Wide Web
Answer:
The correct answer is D. Internet telephony.
Explanation:
Internet telephony (also called IP telephone or Voice over IP or VoIP) designates telephone activity through a computer network in which data is transmitted according to the IP standard. IP means "Internet protocol" and is a set of rules according to which data must be prepared for transmission on the Internet. IP telephony uses the same transmission channels as normal data transmission on the Internet.
<span>The slack can easily be explained as the difference between latest start (ls) and earliest start (es) of an activity.
As the above example, we can easily now calculate slack as the follow:
slack = LS - ES or LF - EF
So, the correct answer will be
LS - ES = 14 -12 = 2
or LF - EF = 20-18 = 2
So, the slack associated with this activity is 2.</span>
