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.
Step-by-step 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.