题目内容
（请给出正确答案）
[主观题]
TCP/IPisacommunicationprotocol,whichprovidesmanydifferentnetworkingservices.TheTCP/IPInter
TCP/IP is a communication protocol, which provides many different networking services. The TCP/IP Internet protocol suite is formed from two standards: the TCP （Transmission Control Protocol） and the IP（Internet Protocol）.
（72） means it is on the transport layer.
A.ISO
B.IP
C.OSI
D.TCP
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