正确答案:
题目:为了与具体的物理传输媒体无关, TCP /IP 协议结构中并没有对最低两层做出规定。( )
解析:√
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举一反三的答案和解析:
[单选题]The VoIP gateway can perform the digitization, () and encapsulation required, and it controls the setup of VoIP calls between the calling device and the called device
compression
[单选题]监控系统应采用()。
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