When implementing OSPFv3, which statement describes the configuration of OSPF areas?（）

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• Which two design concerns must be addressed when designing a multicast implementation?（）

  A . only the low-order 23 bits of the MAC address are used to map IP addresses B . only the low-order 24 bits of the MAC address are used to map IP addresses C . only the high-order 23 bits of the MAC address are used to map IP addresses D . only the low-order 23 bits of the IP address are used to map MAC addresses E . the 0x01004f MAC address prefix is used for mapping IP addresses to MAC addresses F . the 0x01005e MAC address prefix is used for mapping IP addresses to MAC addresse

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• Which two statements about route redistribution when implementing OSPF are true?（）

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• Which two design concerns must be addressed when designing a multicast implementation？（）

  A . only the low-order 23 bits of the MAC address are used to map IP addresses B . only the low-order 24 bits of the MAC address are used to map IP addresses C . only the high-order 23 bits of the MAC address are used to map IP addresses D . only the low-order 23 bits of the IP address are used to map MAC addresses E . the 0x01004f MAC address prefix is used for mapping IP addresses to MAC addresses F . the 0x01005e MAC address prefix is used for mapping IP addresses to MAC addresse

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  A . network management B . improving QoS C . determining budget D . reducing costs E . increasing competitiveness F . improving customer support

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