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思科认证考试

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Which three IP multicast related statements are true? (Choose three.)  ()

  • A、 Multicast addresses 224.0.1.0 through 238.255.255.255 are called globally scoped addresses. They are used to multicast data between organizations and across the Internet
  • B、 The multicast address 224.0.0.1 is a globally scoped address that has been reserved for the Network  Time Protocol (NTP) by the IANA
  • C、 Multicast addresses 239.0.0.0 through 239.255.255.255 are called limited scope addresses. They are  constrained to a local group or organization
  • D、 Multicast addresses 224.0.0.5 and 224.0.0.6 are limited scoped addresses that have been reserved for  OSPF
  • E、 Multicast addresses 224.0.0.0 through 224.0.0.255 are used for network protocols on local LAN segments. Because they are always transmitted with a Time to Live (TTL) of 1, they are never forwarded  by a router
正确答案:A,C,E
答案解析:
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