专业技术初级资格网络管理员基础知识2001年网络管理员上午试题
题目内容

●Communication protocols are __(66)__ connection-oriented or connectionless,__(67)__ whether the sender of a message needs to contact and maintain a dialog with the recipient or __(68)__ send a message without any prior connect and with the hope that the recipient receives everything __(69)__ .These methods __(70)__ the two ways that communication is implemented on networks.

2024-07-09

A.not

B.neither

C.either

D.all

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