2. 计算机
  3. We have already covered the topic of network addresses．The first (1) in a block(in class A，B，and C) defines the network addres

We have already covered the topic of network addresses．The first (1) in a block(in class A，B，and C) defines the network addres

admin2019-05-15  33
问题 We have already covered the topic of network addresses．The first  (1)  in a block(in class A，B，and C) defines the network address．In classes A，B，and C，if the hosted is all 1s，the address is called a direct broadcast address．It is used by a  (2)  to send a packet to all hosts in a specific network．All hosts will accept a packet having this type of destination address．Note that this address can be used only as a  (3)  address in an IP packet．Note also that this special address also reduces the number if available hosted for eachnetid in classes A，B，and C．
    In classes A，B，and C，an address with all 1s for the netid and hosted(32 bits)define a  (4)  address in the current network．A host that wants to send a message to every other hosts can use this address as destination address in an IP packet．However，a router will block a packet having this type of address to confine the broadcasting to the  (5)  network．Note that this address belongs to class E．
(2)
选项 A、router
B、switch
C、hub
D、firewall
答案A
解析
转载请注明原文地址:https://jikaoti.com/ti/ecd7FFFM
本试题收录于： 网络管理员上午基础知识考试题库软考初级分类
0

网络管理员上午基础知识考试

软考初级

相关试题推荐
随机试题
最新回复(0)