Match the following sentences with the best acronym. - - - - - Uses circuit switching. Uses packet switching. Router port that faces other routers in public Internet. Set of devices connected to a router port. Connection-oriented network. a. PSTN b. Internet C. WAN d. LAN - - e. FDM Suffers out-of-order delivery. Suffers setup delay. Uses frequency channels as circuits. Uses time slots as circuits. Uses shared resources. - - - f. TDM