2. 计算机
  3. 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

admin2019-02-25  25
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
转载请注明原文地址:https://jikaoti.com/ti/3MO7FFFM
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
0

系统规划与管理师上午综合知识考试

软考高级

相关试题推荐
随机试题
最新回复(0)