每一个光纤通道节点至少包含一个硬件端口，按照端口支持的协议标准有不同类的端口，其中NL_PORT是
- A.支持仲裁环路的节点端口
- B.支持仲裁环路的交换端口
- C.光纤扩展端口
- D.通用端口
正确答案及解析
正确答案
解析
每一个光纤通道节点包含至少一个硬件端口，将该节点与光纤通道环境连接，并处理与其他端口的信息。此端口称为节点端口。一个节点可以有一个或多个节点端口。按照端口支持的协议标准有以下几种不同类型的节点端口：N_PORT：Node_ports既可以用在端到端也可以用在光纤交换环境。在端到端环境下N_ports发送端与接收端之间直接互连。例如：一个HBA或一个Symmetrix FA端口就是一个N_port。F_PORT：Fabric_Ports用于光纤交换环境下N_port之间的互连，从而所有节点都可以相互通信。通常这些端口在交换机上，允许HBA和其他设备如Symmetrix FA连接到光纤。NL_PORT：NL_Port是支持仲裁环路的节点端口。例如，NL_Port可以是HBA或Symmetrix FA端口。FL_PORT：FL_PORT是支持仲裁环路的交换端口。通常是交换机上连接到仲裁环路的端口。E_PORT：E_Port是一个光纤扩展端口，用于在多路交换光纤环境下。E_ports通常指一个交换机上连接到光纤网络另一个交换机的端口。
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