Which technology is best suited for the most scalable means to separate the data plane for aLayers VPN？（）

A. It will only become active after a software failure
B. It will only become active after a hardware failure
C. It requires that Cisco N3F· be enabled in order to work successfully
D. It synchronizes the MAC·， FIB·， and adjacency tables between Active and Standby Route Processors

A. They are known as fabric routing
B. They cannot span multiple switches
C. Their connectivity is supported by Layer 2
D. They enable devices in different VSAN fabrics to communicate
E. They require that multiple switch fabrics be merged before they can function

A. a WDM system that is compatible with EDFA technology
B. an optical technology for transmitting up to 16 channels over multiple fiber strands
C. an optical technology for transmitting up to 32 channels over multiple fiber strands
D. a technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDM
E. a technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM