무슨 단어?

의미: “A group of computers or devices that shares a common directory database and is administered as a unit. On the Internet, domains organize network addresses into hierarchical subsets. For example, the .com ______ identifies host systems used for commercial business.”

첫 번째 글자:D

정답:  

어떤 단어의 뜻일까요?

IQ 점수 0