ccna考试题库文档格式.docx

1、有类路由协议，错误B：可变长度子网掩码，正确C：采用广播地址更新，错误D：手动路由汇总，正确E:使用spf算法计算路径，错误。QUESTION 38Which two Ethernet fiber-optic modes support distances of greater than 550 meters?A.1000BASE-CXB. 100BASE-FXC. 1000BASE-LXD. 1000BASE-SXE. 1000BASE-ZX CE最长距离25米最长距离100米最长距离3000米最长距离550米E：最长距离70千米QUESTION 39What two things will

2、 a router do when running a distance vector routing protocol?A. Send periodic updates regardless of topology changes.B. Send entire routing table to all routers in the routing domain.C. Use the shortest-path algorithm to the determine best path.D. Update the routing table based on updates from their

3、 neighbors.E. Maintain the topology of the entire network in its database. ADsetupfrom a privileged prompt?A. Setup is additive and any changes will be added to the config script.B. Setup effectively starts the configuration over as if the router was booted for the first time.C. Setup will not run i

4、f an enable secret password exists on the router.D. Setup will not run, because it is only viable when no configuration exists on the router. A0不保存进入IOS命令配置模式1不保存返回设置模式2保存退出设置和改动被保存到配置脚本为有效地重新开始配置，如果路由器是第一次启动的配置。如果配置了密码，设置不会运行设置不可用，因为它只能在没有配置存在时才有效QUESTION 49Which two statements describe the Cisco i

5、mplementation of VLANs?A. VLAN 1 is the default Ethernet VLAN.B. CDP advertisements are only sent on VLAN 1002.C. By default, the management VLAN is VLAN 1005.D. By default, the switch IP address is in VLAN 1005.E. VLAN 1002 through 1005 are automatically created and cannot be deleted. AE考点：考查vlan知识

6、点。缺省都存在vlan1，端口都属于vlan1，正确CDP信息只发送到vlan1002，错误，vlan1002是fddi网络的vlan号。缺省情况交换机IP配置在vlan1005，错误，vlan1005trnet网络的vlan号。缺省在vlan1里面。vlan1002-1005自动生成并不能被删除，正确，他们都是被保留的特殊vlan。QUESTION 56 没有理解什么意思Refer to the exhibit. What does the （*） represent in the output?A. Packet is destined for a local interface to t

7、he router.B. Packet was translated, but no response was received from the distant device.C. Packet was not translated, because no additional ports are available.D. Packet was translated and fast switched to the destination. D由图中提示信息可以看出，源为10.10.0.2已经有个一个转换，所以后续的数据包快速转发。What are three advantages of V

8、LANs? （Choose three.）A. VLANs establish broadcast domains in switched networks.B. VLANs utilize packet filtering to enhance network security.C. VLANs provide a method of conserving IP addresses in large networks.D. VLANs provide a low-latency internetworking alternative to routed networks.E. VLANs a

9、llow access to network services based on department, not physical location.F. VLANs can greatly simplify adding, moving, or changing hosts on the network. AEFVLAN在交换网络中建立广播域，正确利用VLAN的数据包过滤，增强网络的安全性。错误，没有这个特性。提供了在大型网络中的保护IP地址的方法。错误提供低延迟互联网络替代路由网络。vlan允许基于逻辑划分的网络访问，不是物理位置。正确。F：VLAN可以大大简化添加，移动或更改网络上的主机

10、。QUESTION 61An administrator would like to configure a switch over a virtual terminal connection from locations outsideof the local LAN. Which of the following are required in order for the switch to be configured from a remotelocation?A. The switch must be configured with an IP address, subnet mask

11、, and default gateway.B. The switch must be connected to a router over a VLAN trunk.C. The switch must be reachable through a port connected to its management VLAN.D. The switch console port must be connected to the Ethernet LAN.E. The switch management VLAN must be created and have a membership of

12、at least one switch port.F. The switch must be fully configured as an SNMP agent. AC要想远程管理VLAN，1、交换机配置IP，2、路由可达QUESTION 65Which router IOS commands can be used to troubleshoot LAN connectivity problems?A. pingB. tracertC. ipconfigD. show ip routeE. winipcfgF. show interfaces ADF测试连通性查看是否有路由查看接口是否可用Q

13、UESTION 64Which of the following are benefits of VLANs?A. They increase the size of collision domains.B. They allow logical grouping of users by function.允许用户从逻辑上进行分组C. They can enhance network security.D. They increase the size of broadcast domains while decreasing the number of collision domains.E. They increase the number of broadcast domains while decreasing the size of the broadcast domains.F. They simplify switch administration. BCE考查VLAN的特点增加冲突域的大小，错误允许逻辑划分网段，正确增强网络安全，正确。不同vlan不能直接通信。当