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1、840-602 V31 连线题及拖图题清晰版 根据公开资料整理,但不能保证里面的答案完全正确,还请辩 证的参考答案314、Drag the function on the left to the matching security appliance orapplication on the right (not all functions are uses)Blocks unknown MAC address from accessing a wireless LAN Detects software designed to capture sensitive information and
2、 removes it from the computer电脑检测软件定期捕获敏 感信息 Prevents known malicious programs from being installed on Workstations在工作站 上预防已在恶意程序运行 Filters traffic based on source and destination IP address or traffic type 基于源目的IP地址或者流量类型来过滤流量 Identifies malicious network traffic and alerts network personnel 识别恶意网络
3、流 量并向网络人员报警AntispywareAntivirusIDSfirewall315、if a cisco route has learned about network 10.1.1.0 from multiple sources, the router will select and install only one entry into the routing lable. Indicate the order of preference that the router will use by draggig the routes on the left to the order
4、of pregererce category on the rightS 10.1.1.0/24 1/0via 10.1.2.2R 10.1.1.0/24 120/3via 10.1.3.1.serial0 D 10.1.1.0/24 90/2171416via 10.1.5.5.serial0 S 10.1.1.0 is directly connected serial1 O 10.1.1.0/24 110/789via 10.1.3.1.serial0First preferenceSecond preferenceThird preferenceFourth preferenceFif
5、th preference316、drag the description on the left to the routing protocol on the right.(not all potions are used)is vendor-specific 厂商指定uses cost as its metric 用成本作 为metric值 uses hop count as its metric 用跳 数作为metric值 uses the Bellman-Ford algorithm 用贝尔曼福特算法 elects a DR on each multiaccess network 选举
6、DR has a default administrative distance of 90 默认的管理距离是90eigrpis vendor-specifichas a default administrative distance of 90 ospfuses cost as its metric elects a DR on each multiaccess network 317、drag the options on the left under the type of switch port that they describe on the rightcarries traffi
7、c for a single VLAN 携 带单独的VLAN数据 facilitates inter VLAN communication when connected to a Layer 3 device 使 用三层设备来使VLAN间的信息传播 connects an end-user workstation to switch 用户或客户端连接到一台交换机 carries traffic for multiple VLANS 传 送多个VLAN信息 user 802.1q to identify traffic from different VLANS 用802.1q去封装信息 user
8、 a straight-through cable to connect a device 使用直通线去来连接一 台设备Access Portcarries traffic for a single VLAN connects an end-user workstation to switch user a straight-through cable to connect a device Trunk Portuser 802.1q to identify traffic from different VLANS carries traffic for multiple VLANS faci
9、litates inter VLAN communication when connected to a Layer 3 device 318 BitspacketsUDPIp addressessegmentsMAC addresswindowingroutingswitchingNetwok layerpacketsip addressroutingTransport layersegmentswindowingUDP319 the IOS is located and loaded based on boot system commands in NVRAM 加载 IOS If no i
10、os sloacted,the setup dialog imtiates the router looks for the configuration file in NVRAM 加载配置 文件 if no configuration file is located， the setup dialog initiates 如果没有配 置文件，进入初始化状态 the power-on self test executes 开机 自检 The router enters ROMmonitor modethe bootstrap loader in ROM executes 加载ROM中的微代码S
11、tep 1Step 2Step 3Step 4Step 53200 directly connected network1 static router referencing IP address of next hop 2090 internal EIGRP router100110 OSPF120 RIP130RIPOSFPstatic router referencing IP address of next hop internal EIGRP routerdirectly connected network321 routing has been configured on the
12、local router with these commands: local(config)#ip router 0.0.0.0 0.0.0.0 192.168.1.1local(config)#ip router 10.1.0.0 255.255.255.0 192.168.2.2local(config)#ip router 10.1.0.0 255.255.0.0 192.168.3.3 drag each destination ip address on the left to its correct next hop address on the right 10.1.1.101
13、0.1.0.1410.2.1.310.1.4.610.1.0.12310.6.8.4Next hop 192.168.1.110.2.1.310.6.8.4Next 192.168.2.210.1.0.1410.1.0.123Next 192.168.3.310.1.1.1010.1.4.6322holddown time 保持时间poison reverse 路由中毒Count to nfinitylsasplit horizon 水平分割A router learns from its neighbor that a route is down and the route sends an
14、 update back to the neighbor with an infinite metric to that route. The packets flooded when a topology change occurs, causing network routers to update their topological databases and recalculate routes. This prevents sending information about a route back out the same interface that originally lea
15、rned about the route. For a given period this causes the route to ignore any updates with poorer metrics to a lost network. 323Layer 1 problemLayer 2 problemLayer 3 problemport operational port disableSerial0/1 is up，line protocol is up Serial0/1 is up，line protocol is down Serial0/1 is down，line pr
16、otocol is down Serial0/1 is administratively， line protocol is down324 faster convergence快速收敛sends frequent updates发送频繁更 新 less complex configuration 不太复 杂的配置 susceptible to routing loops 容易 受到路由环路的影响 uses only event-triggered updates 只使用触发更新 exchanges full routing table in updates 升级时改变所有路由表 same topology information held by all routers 相同的路由信息对于所 有路由器 requires more memory and processing power 需要更多的内存来 处理数据RIP V1
