如下图所示,某校园网用10Gbps的POS技术与CERNET相连,POS的帧格式是SDH,下列R1的POS 3/0接口配置,正确的是( )。

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问题 如下图所示,某校园网用10Gbps的POS技术与CERNET相连,POS的帧格式是SDH,下列R1的POS 3/0接口配置,正确的是(    )。

选项 A、Router (config)#interface pos3/0
Router (config-if)#description To CERNET
Router (config-if)#bandwidth 10000000
Router (config-if)#ip address 222.38.69.78 0.0.0.3
Router (config-if)#crc 32
Router (config-if)#pos framing sdh
Router (config-if)#no ip
B、Router (config)#interface pos3/0
Router (config-if)#description To CERNET
Router (config-if)#bandwidth 10000000
Router (config-if)#ip address 222.38.69.78 255.255.255.252
Router (config-if)#crc 16
Router (config-if)#pos framing sdh
Router (config-if
C、Router (config)#interface pos3/0
Router (config-if)#description To CERNET
Router (config-if)#bandwidth 10000000
Router (config-if)#ip address 222.38.69.78 255.255.255.252
Router (config-if)#crc 16
Router (config-if)#pos framing sdh
Router (config-if
D、Router (config)#interface pos3/0
Router (config-if)#description To CERNET
Router (config-if)#bandwidth 10000
Router (config-if)#ip address 222.38.69.78 255.255.255.252
Router (config-if)#crc 64
Router (config-if)#pos framing sdh
Router (config-if)#n

答案C

解析 对每个选项逐个分析,选定A)错用了反掩码,选项B)错误在于设置了SONET帧格式,选项D)的crc校验位设置有误。
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