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问题
下面哪种说法正确地描述了已会聚的生成树网络?()
A.所有交换机和网桥的端口都处于转发状态B.所有交换机和网桥的端口要么是根端口要么是指定端口C.所有交换机和网桥的端口要么处于转发状态要么处于阻断状态D.所有交换机和网桥的端口要么处于阻断状态要么处于环回状态
问题
要在连接到服务器的端口上禁用STP,可使用下面哪个命令?()
A.disable spanning-treeB.spanning-tree offC.spanning-tree securityD.spanning-tree portfast
问题
Study the Exhibit below carefully:London#show vtpVTP Version: 2Configuration Revision: 0Maximum VLANs supported locally: 64Number of existing VLANs: 5VTP Operating Mode: ClientVTP Domain Name: LondonVTP Pruning Mode: DisabledVTP V2 Mode: DisabledVTP Traps Generation: DisabledBased on the information given above, what is the VTP function of this particular switch?A．Learn and save VTP configuration in the running configuration.B．Create and change VLANs.C．Forwards information about VTP configuration.D．VTP is disabled on this device.E．VTP is not saved to NVRAM.
问题
The Ezonexam network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test? (Choose two)A．ARPB．CDPC．DHCPD．DNSE．ICMP
问题
You are a systems administrator and you are about to assign static IP addresses to various servers on your network. For the network 192.168.20.24/29 the router is assigned to the first usable host address, while the last usable host address goes to your Sales server. Which one of the following commands would you enter into the IP properties box of the sales server?A．IP address: 192.168.20.14 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.9B．IP address: 192.168.20.254 Subnet Mask: 255.255.255.0 Default Gateway: 192.168.20.1C．IP address: 192.168.20.30 Subnet Mask 255.255.255.248 Default Gateway: 192.168.20.25D．IP address: 192.168.20.30 Subnet Mask 255.255.255.240 Default Gateway: 192.168.20.17E．IP address: 192.168.20.30 Subnet Mask 255.255.255.240 Default Gateway: 192.168.20.25
问题
A Ezonexam technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the show cdp neighbors command.In which OSI layer is the problem most likely occurring?A．PhysicalB．Data linkC．Network layerD．Transport layerE．Application layer
问题
After connecting a PC to an available port on a switch, you find that the PC can not access any of the resources on the LAN. No other PC's connected to the switch appear to be having any issues. What is the most likely cause for this problem?A．The router lacks a routing table entry for the new hostB．The host switch port is assigned to the incorrect VLANC．The host MAC address is incorrectly configuredD．A STP instance for the new host has not been initializedE．The switch does not have the MAC address hard coded in the CAM table.
问题
请参见图示。公司的新安全策略允许来自工程部LAN的所有IP流量访问Internet，但对于来自营销部LAN的流量，则只允许其中的web流量访问Internet。为实施新的安全策略，可在营销部路由器的Serial0/1接口的出站方向上应用哪一ACL()A.access-list 197 permit ip 192.0.2.0 0.0.0.255 any access-list 197 permit ip 198.18.112.0 0.0.0.255 any eq wwwB.access-list 165 permit ip 192.0.2.0 0.0.0.255 any access-list 165 permit tcp 198.18.112.0 0.0.0.255 any eq www access-list 165 permit ip any anyC.access-list 137 permit ip 192.0.2.0 0.0.0.255 any access-list 137 permit tcp 198.18.112.0 0.0.0.255 any eq wwwD.access-list 89 permit 192.0.2.0 0.0.0.255 any access-list 89 permit tcp 198.18.112.0 0.0.0.255 any eq www
问题
请参见图示。管理员注意到从ISP处进入网络的流量大幅增加。管理员清除了计数器。几分钟之后，管理员又检查access-list表。从图中的输出可得出什么结论()A.少量HTTP流量表明web服务器未正确配置B.较高的POP3流量（与SMTP流量相比）表明企业中POP3电子邮件客户端的数量比SMTP客户端数量多C.大量ICMP流量在接口处被拒绝，这是受到DoS攻击的迹象D.较高的电子邮件流量（与web流量相比）表明攻击目标主要是电子邮件服务器
问题
以下ACL将对路由器的流量产生何种影响（）A.它将允许所有源自192.168.19.0的网络流量B.它将拒绝源自主机192.168.19.162的流量C.因为通配符掩码忽略了所有比特，所以对流量没有影响D.permitany选项使deny选项失效
问题
对于以下ACL语句描述正确的是（）A.在F0/1口入方向拒绝PING的请求B.在F0/1口入方向拒绝所有数据包C.在F0/1口出方向拒绝PING的回包D.在F0/1口出方向拒绝所有PING包
问题
对于以下ACL语句描述正确的是（）A.只允许192.168.4.2的数据流穿过R1B.只允许192.168.4.2对R1进行TELNETC.只允许192.168.4.2对R1进行TELNET并拒绝其它流量D.只允许192.168.4.0/24网段的数据流穿过R1
问题
请参见下图。哪个地址是内部全局地址()A.10.1.1.1B.10.1.1.2C.198.18.1.55D.64.100.0.1