[单选题]OSI七层模型中,“段”是哪一层数据封装的名称()
正确答案 :D
传输层
[单选题]IP地址为:192.168.50.70,掩码为:255.255.255.248,则该IP地址所在子网的子网号为()
正确答案 :B
192.168.80.64
[多选题]When you compare the differences between half-duplex and full-duplex Ethernet, which of the following characteristics are exclusive to half-duplex? (Select two answer choices)
正确答案 :AD
Half-duplex Ethernet operates in a shared collision domain.
Half-duplex Ethernet has lower effective throughput.
解析:解析:Explanation:
[单选题]某台PC,能ping通路由器,但不能telnet到路由器,可能的原因是()
正确答案 :D
telnet密码未设置
[多选题]属于私有IP段的是()
正确答案 :ABD
10.0.0.0-10.255.255.255
172.16.0.0-172.31.255.255
192.168.0.0-192.168.255.255
解析:ABD
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