What three tasks must a network administrator perform to properly configure Hot Standby Routing Protocol (HSRP)?()
A. Define the encapsulation type.
B. Define the standby router.
C. Define the standby IP address.
D. Enable the standby priority.
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属于光纤光学特性的是()
A. 折射率、数值孔径、截止波长
B. 纤芯、包层直径、偏心度
C. 损耗、带宽
D. 色散、损耗