Since the switch 7 a is not {TAIL ~ a part} of the Internet, it is necessary for {HEAD ~ the packet switching transfer} of data through the Internet to first make a connection with the access point POP 6 
Since the switch 7 a is not { TAIL ~ a part } of the Internet , it is necessary for { HEAD ~ the packet switching transfer } of data through the Internet to first make a connection with the access point POP 6
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH