A./etc/networksB./etc/hostsC./etc/configsD./etc/address
A./etc/networks
B./etc/hosts
C./etc/configs
D./etc/address
A./etc/networks
B./etc/hosts
C./etc/configs
D./etc/address
Softwarearchitectural structures can be divided into three major categories, dependingon the broad nature of the elements they show.1)(73)embodydecisions as a set of code or data units that have to be constructed orprocured.2)(74)embody decisions as to how the systemis to be structured as set of elements that have runtime behavior. andinteractions.3)(75)embody decisions as to how thesystem will relate to nonsoftware structures in its
environment(suchas CPUs, file systems, networks, development teams, etc.).
71.()
A.attributes
B.constraint
C.functionality
D.requirements
A.64Kb/s
B.48Kb/s
C.56Kb/s
D.32Kb/s
A.核心层负责数据包的复杂计算
B.核心交换机之间可进行Port Trunking
C.接入层实现网络的访问策略控制
D.汇聚层完成MAC层过滤和网段微分
B.Modem就绪→DTE就绪→请求发送→允许发送→发数据→清请求发送→清允许发送→清DTE就绪→清Modem就绪
C.DTE就绪→Modem就绪→请求发送→允许发送→发数据→清请求发送→清允许发送→清Modem就绪→清DTE就绪
D.DTE就绪→Modem就绪→请求发送→允许发送→发数据→清请求发送→清允许发送→清DTE就绪→清Modem就绪
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