[单选题]SMTP工作在OSI哪一层()
正确答案 :D
应用层
[单选题]The Ezonexam corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change?
正确答案 :D
It will prevent segment 1's broadcasts from getting to segment 2.
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