Which two statements best describes the role of a router on a broadcast domain?() A.Routers facilitate communications within a broadcast domain.B.Routers facilitate communications between broadcast domains.C.Routers are used to break up broadcast domains into separate networks.D.Routers are used to connect small broadcast domains and form larger more efficient broadcast domains
Which two statements best describes the role of a router on a broadcast domain?()
A.Routers facilitate communications within a broadcast domain.
B.Routers facilitate communications between broadcast domains.
C.Routers are used to break up broadcast domains into separate networks.
D.Routers are used to connect small broadcast domains and form larger more efficient broadcast domains
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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
下面是某路由器的DHCP配置信息： ip dhcp excluded-address 182.105.246.2 182.105.246.10 ! ip dhcP Pool 246 network 182.105.246.0 255.255.255.0 default-router 182.105.246.1 domain-name pku.edu．cn dns-server 182.105.246.26 182.105.246.27 222.1A．182.105.246.5B．182.105.246.11C．182.105.246.192D．182.105.246.254
Giventhisfragmentinaservlet：23.if（req.isUserInRole（Admin））{24.//dostuff25.}AndthefollowingfragmentfromtherelatedJavaEEdeploymentdescriptor：812.security-role-ref813.role-nameAdmin/role-name814.role-linkAdministrator/role-link815./security-role-ref900.security-role901.role-nameAdmin/role-name902.role-nameAdministrator/role-name903./security-roleWhatistheresult？（）A.Line24canneverbereached.B.ThedeploymentdescriptorisNOTvalid.C.Ifline24executes，theuser’srolewillbeAdmin.D.Ifline24executes，theuser’srolewillbeAdministrator.E.Ifline24executestheuser’srolewillNOTbepredictable.
The output of the show aaa domain-map displays the following information:Domain: isp1.com; virtual-router: vr1; loopback: 1Domain: isp2.com; virtual-router: vr2; loopback: 1Domain: none; virtual-router: vr3; loopback: 1Domain: default; virtual-router: vr4; loopback: 1The end user supplies a login name of joe@isp7.com .Which virtual router is responsible for authenticating this user?（）A. vr1B. vr2C. vr3D. vr4
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
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