How does the ERX Edge Router interact with subscriber IP addresses assigned by an external DHCP server?() A.It monitors messages from the external server and updates the routing table as needed.B.It maintains the leases for the DHCP server and reassigns addresses to new subscribers.C.It sends keep alives to the subscriber and makes the address available when the subscriber stops responding.D.It sends keep alives to the subscriber and removes the host route when the subscriber stops responding.
How does the ERX Edge Router interact with subscriber IP addresses assigned by an external DHCP server?()
A.It monitors messages from the external server and updates the routing table as needed.
B.It maintains the leases for the DHCP server and reassigns addresses to new subscribers.
C.It sends keep alives to the subscriber and makes the address available when the subscriber stops responding.
D.It sends keep alives to the subscriber and removes the host route when the subscriber stops responding.
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在Cisco路由器上建立一个名为zw246的DHCP地址池，地址池的IP地址是176.115.246.0/24，其中不用于动态分配的地址有176.115.246.2～176.115.246.10，缺省网关为176.115.246.1，域名为tj.edu.cn，域名服务器地址为176.115.129.26，地址租用时间设定为6小时30分钟。下列DHCP地址池的配置，正确的是A）Router (config)#ip dhcp pool zw246Router (dhcp-config)#ip dhcp excluded-address 176.115.246.2 176.115.246.10Router (dhcp-config)#network 176.115.246.0 255.255.255.0Router (dhcp-config)#default-router 176.115.246.1Router (dhcp-config)#domain-name tj.edu.cnRouter (dhcp-config)#dns-server address 176.115.129.26Router (dhcp-config)#lease 0 6 30B）Router (config)#ip dhcp excluded-address 176.115.246.2-10Router (config)#ip dhcp pool zw246Router (dhcp-config)#network 176.115.246.0 255.255.255.0Router (dhcp-config)#default-router 176.115.246.1Router (dhcp-config)#domain-name tj.edu.cnRouter (dhcp-config)#dns-server address 176.115.129.26Router (dhcp-config)#lease 0 6 30C）Router (config)#ip dhcp excluded-address 176.115.246.2 176.115.246.10Router (config)#ip dhcp pool zw246Router (dhcp-config)#network 176.115.246.0 255.255.255.0Router (dhcp-config)#default-router 176.115.246.1Router (dhcp-config)#domain-name tj.edu.cnRouter (dhcp-config)#dns-server address 176.115.129.26Router (dhcp-config)#lease 0 6 30D）Router (config)#ip dhcp excluded-address 176.115.246.2 176.115.246.10Router (config)#ip dhcp pool zw246Router (dhcp-config)#network 176.115.246.0 255.255.255.0Router (dhcp-config)#default-router 176.115.246.1Router (dhcp-config)#domain-name tj.edu.cnRouter (dhcp-config)#dns-server address 176.115.129.26Router (dhcp-config)#lease 30 6 0
在路由器上建立一个名为test的DHCP地址池，并为其分配IP地址202.112.7.0、24，子网地址中的202.112.7.2～202.112.7.10作为静态地址分配，正确的DHCP配置是A．Router(config)#ip dhcp pool test Router(config)#ip dhcp excluded-address 202.112.7.2-10 Router(dhcp-config)#network 202.112.7.0 255.255.255.0B．Router(config)#ip dhcp excluded-address 202.112.7.2-10 Router(config)#ip dhcp pool test Router(dhcp-config)#network 202.112.7.0/24C．Router(config)#ip dhcp excluded-address 202.112.7.2-10 Router(config)#ip dhcp pool test Router(dhcp-config)#network 202.112.7.0 0.0.0.255D．Router(config)#ip dhcp excluded-address 202.112.7.2-10 Router(config)#ip dhcp pool test Router(dhcp-config)#network 202.112.7.0 255.255.255.0
下面是某路由器的 DHCP 配置信息ip dhcp exeluded-address 182.105.246.2 182.105.246.10!ip dhcp pool 246network 182.105.246.0 255.255.255.0default-router 182.105.246.1domain-name pku.edu.cndms-server 182.105.129.26 182.105.129.27 222.112.7.13lease 0.5根据上述信息， DHCP 客户端不可能从服务器获得的 IP 地址是A)182.105.246.5B)182.105.246.11C)182.105.246.192D)182.105.246.254
【问题5】（3分，每空1分）假如在图3.1中移除DHCP服务器，改由单位Router来提供DHCP服务，在Router上配置DHCP服务时用到了如下命令，请在下划线处将命令行补充完整。Router(config)ip(5)hkhk//配置DHCP地址池名为hkhkRouter(dhcp-config)(6)192.168.1.0 255.255.255.0Router(dhcp-config)(7)192.168.1.9
在路由器上建立一个名为test的DHCP地址池，并为其分配IP地址202.112.7.0/24，子网地址中的202.112.7.2～202.112.7.10作为静态地址分配，正确的DHCP配置是______。A．Router(config) #ip dhcp pool test Router(config) #ip dhcp excluded-address 202.112.7.2-10 Router(dhcp-config) #network 202.112.7.0-255.255.255.0B．Router(config) #ip dhcp excluded-address 202.112.7.2-202.112.7.10 Router(config) #ip dhcp pool test Router(dhcp-config) #network 202.112.7.0/24C．Router(config) #ip dhcp excludeaddress 202.112.7.2-202.112.7.10 Router(config) #ip dhcp pool test Router(dhcp-config) #network 202.112.7.0-0.0.0.255D．Router(config) #ip dhcp excluded-address 202.112.7.2-202.112.7.10 Router(config) #ip dhcp pool test Router(dhcp-config) #network 202.112.7.0-255.255.255.0
在Cisc0路由器上建立-个名为zw246的DHCP地址池，地址池的IP地址是176．115．246．0/24，其中不用于动态分配的地址有176．115．246．2-176．115．246．10，缺省网关为l76．115．246．1，域名为tj．edu．en，域名服务器地址为l76．115．129．26，地址租用时间设定为6小时30分钟。下列DHCP地址池的配置，正确的是（ ）。A.Router（config）#ip dhcp pool zw246Router（dhcp-eonfig）#ip dhep excluded-address l76．1 15．246．2 176．1 15．246．10Router（dhcp-eonfig）#network l76．115．246．0 255．255．255．0Router（dhcp-config）#default-router l76．115．246．1Router（dhcp-config）#domain-name tj．edu．enRouter（dhcp-config）#dns-server address 176．1 15．129．26Router（dhcp-config）#lease 0 6 30B.Router（config）#ip dhcp excluded-address 176．115．246．2-10Router（config）#ip dhcp pool zw246Router（dhcp-config）#network l76．1 15．246．0 255．255．255．0Router（dhcp-config）#default-router l76．115．246．1Router（dhcp-config）#domain-name tj．edu．caRouter（dhcp-config）#dns-server address l76．115．129．26Router（dhcp-config）#lease 0 6 30C.Router（config）#ip dhcp excluded-address l76．115．246．2 176．115．246．10Router（config）#ip dhcp pool zw246Router（dhcp-config）#network 176．115．246．0 255．255．255．0Router（dhcp-config）#default-muter l76．115．246．1Router（dhcp-config）#domain -name tj．edu．anRouter（dhcp-config）#dns-server address 176．115．129．26Router（dhcp-config）#lease 0 6 30D.Router（config）#ip dhcp excluded-address 176．1 15．246．2 176．1 15．246．10Router（config）#ip dhcp pool zw246Router（dhcp-config）#network 176．1 15．246．0 255．255．255．0Router（dhcp-config）#default-router 176．1 15．246．1Router（dhcp-config）#domain-name tj．edu．cnRouter（dhcp-config）#dns-server address 176．115．129．26Router（dhcp-config）#lease 30 6 0
Refertotheexhibit.WhichofthefollowingIOSDHCPconfigurationstatementsisrequiredsothataCiscoskinny－basedIPphonecanconnectwithCallManager?() A.ipdhcppoolClientB.network10.1.1.0255.255.255.240C.default-router10.1.1.1D.dns-server10.2.2.2E.domain-namecisco.comF.option150ip10.3.3.3
在某台Cisco路由器中定义一个名为test的DHCP地址池(192.168.3.0/26)，并保留192.168.3.62/29的IP地址。下列正确的配置语句是(29)。A．Router(config)#ip dhcp pooltest Router(dhcp-config)#network 192.168.3.00.0.0.63 Router(dhcp-config)#ip dhcp excluded-address192.168.3.62B．Router(config)#ip dhcp poo1 test Router(dhcp-config)#network 192.168.3.0255.255.255.192 Router(dhcp-config)#ip dhcp excluded-address 192.168.3.62255.255.255.248C．Router(config)#ip dhcp poo1 test Router(dhcp-config)#network 192.168.3.0/26 Router(dhcp-config)#ip dhcp excluded-address 192.168.3.62/29D．Router(config)#ip dhcp excluded-address 192.168.3.56192.168.3.62 Router(config)#ip dhcp pool test Router(dhcp-config)#network 192.168.3.0/26
阅读以下说明，回答问题1至问题4，将解答填入答题纸对应的解答栏内。【说明】如图3-1所示，某公司规划了两个网段，网段10.1.1.0/24为固定办公终端，网段10.1.2.0/24提供访客临时接入网络。PC-1使用固定IP地址：10.1.1.100/24，其他终端使用DHCP方式分配IP地址。【问题1】（4分）所有设备配置保持默认配置情况下，图3-1拓扑中，有（1）个冲突域，有（2）个广播域（按照50个PC终端计算）。【问题2】（8分）按照公司网络设计要求，需对Switch完成基本配置，请将下面的配置代码补充完整。（3）[HUAWEI] sysname（4）[DHCP-Server] dhcp enable[DHCP-Server] vlan （5）10 to 11 //创建VLAN10和VLAN11[DHCP-Server]（6） gigabitethernet 0/0/1[DHCP-Server-GigabitEthernet0/0/1]port link-type （7）[DHCP-Server-GigabitEthernet0/0/1]port default vlan （8）[DHCP-Server-GigabitEthernet0/0/1]quit[DHCP-Server]interface vlanif 10[DHCP-Server-Vlanif10] ip address （9） （10）[DHCP-Server-Vlanif10]quit[DHCP-Server]gigabitethernet 0/0/2 接口配置略......（3）～（10）备选答案A.24 B.DHCP-Server C.10.1.1.1 D.system-viewE.interface F.batch G.access H.10【问题3】（6分）按照公司网络设计要求，完成DHCP服务器配置，固定办公设备IP地址租期为30天，访客的IP地址租期为1天，请将下面的配置代码补充完整。......[DHCP-Server]interface vlanif 10[DHCP-Server-Vlanif10] （11） select interface //使能接口采用接口地址池的DHCP服务器功能[DHCP-Server-Vlanif10]dhcp server lease day （12）[DHCP-Server-Vlanif10]dhcp server static-bind ip-address （13） mac-address （14） //为PC-1分配固定的IP地址[DHCP-Server-Vlanif10]quit[DHCP-Server]interface vlanif 11[DHCP-Server-Vlanif11]dhcp select interface[DHCP-Server-Vlanif11]quit[DHCP-Server]（11）～（14）备选答案A.10.1.1.100 B.286e-d444-b692 C.dhcp D.30【问题4】（2分）在问题3的配置代码中，没有关于VLAN11地址租期的配置代码，下面的描述中正确的是（15）。（15）备选答案A.配置错误，须手动添加相关配置代码，否则VLAN11的客户端无法获取IP地址B.配置错误，须手动添加相关配置代码，否则DHCP服务器无法正常工作C.配置正确，无需手动添加配置代码，VLAN11的地址租期将与VLAN10相同D.配置正确，无需手动添加配置代码，默认地址租期为1天
下列哪条命令可让网络管理员检查分配给特定 MAC 地址的 IP 地址？A．Router# show ip dhcp bindingB．Router# show ip dhcp poolC．Router# show ip dhcp server statisticsD．Router# show running-config I section_dhcp