[单选题]交换机上VLAN的功能描述中,正确的是()
正确答案 :B
可以减少广播对网络性能的影响
[单选题]能够分配给设备的IP,应该是()
正确答案 :A
网络有效IP
[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]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.
[单选题]关于帧中继的说法,正确的是()
正确答案 :C
可以偷占带宽
[单选题]A Ezonexam switch is configured with all ports assigned to VLAN 2. In addition, all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?
正确答案 :D
An additional broadcast domain will be created.
解析:解析:Explanation:
[多选题]对于IP为199.41.27.0,子网掩码为255.255.255.240,则该IP地址和子网掩码相作用会得到一系列IP,从下列选项中选出属于“有效IP”的选项:()
正确答案 :ABCD
199.141.27.33
199.141.27.112
199.141.27.119
199.141.27.126
解析:ABCD
[单选题]标准访问控制列表的数字标识范围是()。
正确答案 :B
1-99
[单选题]命令ip nat pool aaa 192.1.1.2 192.1.1.10 netmask 255.255.255.0的作用是()
正确答案 :B
定义地址池
[单选题]默认情况下,RIP定期发送路由更新的时间是()
正确答案 :B
30S
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