面试问题库Top300+项CCIE面试名问题(Part1)

1、IP Routing What does it mean to have fast or autonomous switching enabled and disabled on the same interface?在同一个接口上快速或自主切换启用和停用是什么意思？ How is the load shared between two parallel lines of equal capacity when these lines are configured for load balancing?当两个并行线路配置负载平衡时,并行线路之间的负载如何共享？ What does route

2、summarization mean?路由汇聚是什么意思？ When does a Cisco router gen erate a source quench?思科路由器什么时候产生來源抑制？ When does a Cisco router initiate a routing request out its interfaces?思科路由器什么时候从其接口发起路由请求？ What is the difference between the ip default-gateway, ip default-network, and ip route 0.0.0.0/0 commands?IP默

3、认路由，IP默认网络和IP路径00.00/0命令有什么区别？ How do I use the ip helper-address comma nd to forward Bootstrap Protocol (BOOTP) frames?如何使用IP helper-address命令转发Bootstrap协议(BOOTP )帧? Would it be possible to configure a router for a 255.255.254.0 Ethernet and a 255.255.252.0 serial sub net?可以为255.255.254.0以太网和255.25

4、5.252.0串行子网设定路由器吗？ Does IGRP/RIPv1 support variable subnetting?IGRP / RIPvl是否支持可变长度子网划分？ Can an interface have more than one ip access-group statement in its con figuration?接口在具设置中可以有多个IP Access-group声明吗？ Can I configure two in terfaces in the same subnet (tO= 142.10.46.250/24 and t1 142.10.46.251/2

5、4)?可以在同一子网中设置两个接口(t0 =142.10.46.250/24和t1 =142.10.46.251/24 )吗？ Is it possible to have duplicate ip addresses for two serial interfaces that belong to the same router?属于同一路由器的两个串行接口是否可以拥有重复的IP地址？ Is there a performance advantage when using the IP access list keyword established on an extended ACL?使用

6、扩展ACL上建立的IP访问列表关键字是否具有性能优势？ What is Unicast Reverse Path Forwarding (uRPF)? Can a default route 0.0.0.0/0 be used to perform a uRPF check?什么是单播逆向转发(uRPF ) ?可以使用默认路由0.0.0.0/0执行uRPF检查 吗？ Who does load-balancing when there are multiple links to a destination,Cisco Express Forwarding (CEF), or the routi

7、ng protocol? 当多个链路到达目的地时,Cisco Express Forwarding ( CEF )还是路由协议 进行负载平衡？ What are the maximum number of secondary IP addesses that can be con figured on a router interface?在路由器接口上，最多可以配置多少个的辅助IP地址？ Can a VLAN interface and a tunnel in terface have the same IP address?VLAN接口和隧道接口可否具有相同的IP地址？ What is V

8、irtual Routing and Forwarding (VRF)?什么是虚拟路由转发(VRF ) ? How do I connect two different ISPs and route different traffic to different ISPs?如何连接两个不同的ISP并将流星发送到不同的ISP ? What is the difference between the two methods to create static routes?创建静态路由的两种方法有什么区别？ What is the purpose of ports 2228 and 56506?端口 2228和56506的用途是什么？ How do you limit the number of sessions when a customer accesses the network?如何限制客户访问网络时的Session数目？ What does the term threshold and timeout in IP SLA operation mean?IP SLA操作中阈值和超时是什么意思？ What is Network Descriptor B