[따라學it] 04. 실제로 컴퓨터끼리는 Ip주소를 사용해 데이터를 주고받는다
Synopsis
OSI 7계층 중 3계층에 대한 내용입니다. 3계층은 네트워크 상에서 통신하는데 있어서 굉장히 중요한 계층이기 때문에 내용이 깁니다.
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