[多选题]Two stations on the Ezonexam LAN transmit at the same time, resulting in a collision. What happens when a collision occurs on the network? (Choose all that apply)
正确答案 :BDE
A jam signal informs all devices that a collision occurred.
The devices that are involved in the collision stops transmitting for a short time.
The collision invokes a random back-off algorithm.
解析:解析:Explanation:
[单选题]两台路由器直连到一起,应该使用的线缆为()
正确答案 :A
交叉线缆
[单选题]关于OSPF中DR的说法不正确的是()
正确答案 :B
如果某路由器优先级比DR优先级高,但启动晚,它会抢占原来的DR自己成为DR
[单选题]RIP路由协议认为“网络不可到达”的跳数是:()
正确答案 :B
16
[单选题]当拓扑信息完成交换,相邻路由器具有相同的LSDB时,下列哪项OSPF邻居状态是希望得到的()
正确答案 :B
FULL
[单选题]OSPF骨干区的区域编号为()
正确答案 :C
0.0.0.0
[单选题]关于静态NAT,下面()说法是正确的。
正确答案 :C
静态NAT将内部地址一对一静态映射到内部全局地址
[单选题]下面对Cisco2621路由器和Cisco2501路由器描述中,错误的是()
正确答案 :C
Cisco2501上提供一个100Mbit/s的快速以太网端口
[单选题]EIGRP的管理距离()
正确答案 :C
110
[单选题]What is the purpose of the spanning-tree algorithm in a switched LAN?
正确答案 :C
To prevent switching loops in networks with redundant switched paths.
解析:解析:Explanation:STPisusedinLANswithredundantpathsorroutestopreventloopsinalayer2switchedorbridgedLAN.IncorrectAnswers:A,B:TheprimarypurposeofSTPistopreventloops,notformonitoringormanagementofswitchesorVLANs.D.VLANsareusedtosegmentaLANintomultiplecollisiondomains,buttheSTPprocessalonedoesnotdothis.E.Routersareusedtopreventroutingloopsatlayer3oftheOSImodel.STPoperatesatlayer2.
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