多项选择题

Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？（）

A.Designated Root Cost
B.bridge ID priority
C.max age
D.bridge ID MAC address
E.Designated Root Priority
F.forward delay

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单项选择题

Totroubleshootnetworkissuesmoreaccurately，millisecondsshouldbeincludedinthesyslogoftherouter.Whichcommandwillachievethis？（）

A.service timestamps log datetimec msec
B.logging timestamps msec
C.syslog timestamps hour minute second miliseconds
D.service logging timestamp msec
E.logging service timestamp msec

单项选择题

OnarouterthatisconfiguredwithmultipleIPSLAprobes，whichcommandcanbeusedtomanagetheCPUloadthatwascreatedbytheperiodicprobing？（）

A.ip sla monitor low-memory
B.ip sla group schedule
C.ip sla reaction-trigger
D.ip sla enable timestamp

Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？ （）

Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？（）