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Networks can be interconnected by differ
Networks can be interconnected by differ
考试题库
2022-08-02
27
问题
Networks can be interconnected by different devices in the physical layer networks can be connected by _( )_ or hubs .which just move the bits from one network to an identical network. One layer up we find bridges and switches which operate at data link layer. They can accept _( )_ examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process in me network layer ,we have routers that can connect two networks, If two networks have _( )_ network layer, the router may be able to translate between the packer formats. In the transport layer we find transport gateway, which can interface between two transport connections Finally, in the application layer, application gateways translate message _(请作答此空)_ .As an example, gateways between Internet e-mail and X.400 e-mail must _( )_ the e-mail message and change various header fields.A.syntaxB.semanticsC.languageD.format
选项
答案
B
解析
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本试题收录于:
中级 数据库系统工程师题库软件水平考试初中高级分类
中级 数据库系统工程师
软件水平考试初中高级
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