Ethernet.
(6th Edition - Page 928).
OSPF
The most popular example of UDP protocol usage is video streaming such as Youtube, Twitch, etc.
protocol converter
Arp (address resolution protocol)
Ethernet
ARP
There are many popular voice over internet protocol (VOIP) companies. Some of the most popular ones are Skype, Rebtel, Phone Power, Broadvoice and Vonage.
Ethernet is not a device, it is software protocol. There is hardware to implement the protocol, e.g. NICs, switches, hubs, etc.
SS7 is the correct answer!
hard ware protocols are: - CSMA.CD , TOKEN RING, ATM,
28 byte
Linux