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Typically,an IP address refers to an individual host on a particular network.IP also accommodates addresses that refer to a grou
Typically,an IP address refers to an individual host on a particular network.IP also accommodates addresses that refer to a grou
admin
2019-02-25
20
问题
Typically,an IP address refers to an individual host on a particular network.IP also accommodates addresses that refer to a group of hosts on one or more networks.Such addresses are referred to as multicast addresses,and the act of sending a packet from a source to the members of a ① group is referred to as multicasting.Multicasting done ② the scope of a single LAN segment is straightforward.IEEE 802 and other LAN protocols include provision for MAC—level multicast addresses.A packet with a multicast address is transmitted on a LAN segment.Those stations that are members of the ③ multicast group recognize the multicast address and ④ the packet.In this case,only a single copy of the packet is ever transmitted.This technique works because of the ⑤ nature of a LAN:A transmission from any one station is received by all other stations on the LAN.
④处应填入?
选项
A、reject
B、accept
C、discard
D、transmit
答案
B
解析
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本试题收录于:
系统规划与管理师上午综合知识考试题库软考高级分类
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系统规划与管理师上午综合知识考试
软考高级
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