[When an IP packet arrives at a router,generally the router looks at the destinationaddress of the packet,and forwards the packet to one of its network interfaces.Theforwarding decision is usually done by looking up the destination address from anotherdata structure called a forwarding tablE.The forwarding table is created by the routerusing the routing table and possible routing policies existing in the router.The routerthen creates a table where it lists which networks are accessible through which of therouter's network interfaces.An IP router looks at every IP packet individually and doesthe forwarding decision on a packet-by-packet basis.If something changes in the router'srouting table,a packet can take a different route from a preceding packet even if ithas the same destination.]
From the paragraph above,we can see that the router（1）a forwarding table accordingto the routing table and possible routing policies existing in the router.When an IPpacket arrives at a router,the（2）part of packet is normally checked by the router.AnIP router checks every IP packet individually and makes the forwarding decision basedon（3）._____.

[单选题][When an IP packet arrives at a router,generally the router looks at the de

[单选题][When an IP packet arrives at a router,generally the router looks at the de

[单选题]阅读下面的短文，回答问题 [When an IP packet arrives at a router, generally the router looks at the destination address of the packet, and forwards the packet to one of its network interfaces. The forwarding decision is usually done by looking up the destination

[判断题] 配置Router的IP地址是在全局模式。（）A . 正确B . 错误

[填空题] Router配置IP后，启动端口的命令是“（）”。

[单选题]在路由器中，登录Router时，“Router#”显示说明了Router现在处在（）模式下。A . 全局配置模式B . 用户配置模式C . 特权配置模式D . 普通配置模式

[单选题]下面的哪个是正确配置Router IP的命令？（）A . Router（config-if）#ipaddress210.64.202.23B . Router（config-if）#ipaddress210.64.202.23255.255.0.0C . Router（config-if）#ipaddress210.64.202.23/0D . Router（config-if）#ipaddress210.64.202.23255.255.255.0

[多选题] 在路由器上执行如下配置命令：[Router]dhcpenable[Router]serverforbidden-ip192.168.1.10[Router]serverforbidden-ip192.168.1.254[Router]dhcpserverip-pool0[Router-dhcp-pool-0]network192.168.1.0mask255.255.255.0[Router-dhcp-pool-0]gateway-list192.168.1.254[Router-dhcp-p

[单选题] 路由器命令“Router(config)# access-list 1 permit 192.168.1.1”的含义是（57）。（57）A．不允许源地址为192.168.1.1的分组通过，如果分组不匹配，则结束B．允许源地址为192.168.1.1的分组通过，如果分组不匹配，则检查下一条语句C．不允许目标地址为192.168.1.1的分组通过，如果分组不匹配，则结束D．允许目标地址为192.168.1.1的分组通过，如果分组不匹配，则检查下一条语句

[单选题] Every host and router on the Internet has an IP address，which encodes its (69) ．(69) A．host numberB．host number and socketC．network numberD．host number and network number