高级网络工程师招聘试题

1、 PAGE 3网络工程师姓名：高级网络工程师招聘试题试题说明：本卷共有 30 道选择题，请在答题卡中对应填写每道试题的答案。试题如下：A packetisdestinedfor172.16.1.1.Which ofthe followingrouteswillbe selectedas thebestpathDefault static route for 0.0.0.0/0 with administrative distance 1RIP received route for 172.16.1.0/30 with administrative distance 120BGP receive

2、d route for 172.16.1.0/16 with administrative distance 20OSPF received route for 172.16.1.0/28 with administrative distance 110During the final stages of OSPF convergence, when can the OSPF router begin to send user data?FullExchange2-wayExstartInitLoadingwhat protocol transport does BGP use?BGP is

3、connection-oriented using TCPBGP is connection-less using UDPBGP is connection-less using TCPBGP is connection-oriented using UDPWhat is the inverted wildcard mask of /26? A. 192.255.255.255B. 63.255.255.255C. 0.0.0.192D. 0.0.0.63Which of the below correctly describe the BGP regular expression 200_?

4、Match strings which include AS 200Local AS onlyMatch strings originating from AS 200Match string received from AS 200Which of the following is false regarding routers running internal BGP?They do not have to be directly connectedRouters are running IBGP when two BGP speaking routers are in different

5、 ASsRouters are running IBGP when tow BGP speaking routers are in the same ASThey must form a TCP port 179 connection with each other.Which ways can BGP discover neighbors?Broadcasts onlyDuring a BGP electionStatically defined neighborsExplorer packetsHow does a router forward a datagram to the next

6、 hop address?A router rewrites the MAC address of the datagram to correspond to the next hop.A router rewrites the IP address of the datagram to correspond to the next hop.A router rewrites the MAC and IP addresses of the datagram to correspond to the next hopA router simply forwards the datagram ou

7、t the appropriate interface without rewriting.Which of the following BGP Attributes can be used to hint to external neighbors about the preferred path into an AS?MEDB. WeightC. Next HopD. Local PreferenceWhich of the followingBGPrulesstatesthatIfyour autonomous system is passingtrafficfrom another网络

8、工程师姓名：AS to a third AS, BGP should not advertise a route before all routers in your AS have learned about the route via IGP.SynchronizationCommunityLocal PreferenceAggreagtionWhich ofthefollowingisbestdescribedby a group ofBGPneighborsconfiguredwiththe same update policies?ASB. ConfederationC. Commu

9、nityD. Peer GroupWhich of the following limits the practical size of a LAN or VLAN?the speed of technologies to link networks in different buildingshost performance in an environment with many broadcaststhe address space of a subnetthe number of ports on a switchWhich of the following is true about

10、VTP?If you enable VTP without specifying the mode, the switch will be VTP transparent.You may create VLANs on a VTP client, but they wont propagate to any oter switch.Adding a server to a domain with a high configuration revision number stored in non-volatile memory can alter or delete VLANsVTP vers

11、ion 1 and 2 switches can co-exist and interoperate within a networkSpanningtreeprotocolputsa portin one of5 states.Which of thefollowingistrueoftheblocking state?Noframesareforwarded.Learning Addresses.Frames are forwarded. Learning addresses.No frames are forwarded.No BPDUs are heardNo frames are f

12、orwarded. BPDUs are heardUsers complain that when they boot their desktop machines, it takes too long before the switched network provides connectivity. What should you do?Enable uplinkfast on user ports.Turn on backbonefast.Turn off spanning tree.Enable portfast on user ports.What is NOT a valid ca

13、use of a bad quality of service?Too much variation in delayA router has gone downLack of sufficient bandwidthToo many packed dropsToo much delayWhat is an effect of disabling TTL propagation into the MPLS domain?It assists with loop preventionIt hides the core routers in the MPLS domain from the non

14、 MPLS domainIt allows the setting up of explicit LSPs that are suboptimalIt stops traceroute from operatingStation A is transmitting data to station B, and expects an acknowledgment after every 400 bytes. After trasmitting data for a while, the two stations determine the line is reliable and change

15、to expecting and acknowledgement every 600 bytes. This is an example of :CountdowntimesB. BECNC. Sliding WindowsD. Split Horizon网络工程师姓名：Which subnet is the host 200.1.1.99/27 on?A. 200.1.1.96B. 200.1.1.64C. 200.1.1.16D. 200.1.1.32下面那个 PFC是基于缓存转发的?A. 7609/6509 PFC1B. 7609/6509 PFC2C. 7609/6509 PFC3下面

16、 7609 那个配置不支持 MPLS?Sup2 + OSMB. Sup720 3AC. Sup720 3BD. Sup720 3BXL那种路由协议不支持思科不间断转发(NSF)?EIGRPB. OSPFC. ISISD. BGP在配置 BGP输入、输出策略时，哪个不能同prefix-list同时配置 ?route-mapB. distribute-listC. filter-list思科 GSR系列路由器使用那种队列技术?WFQB. WRRC. PQD. MDRR思科 7609 Sup720 引擎有几个可用的GE端口 ? A. 4B. 3C. 2D. 1下面哪个系列设备不支持双引擎？思科 7300 系列路由器思科 7200 系列路由器思科 6500 系列交换机思科 4500 系列交换机思科 GSR系列路由器 SPA接口处理器 SIP-600 最多支持多少个线速GE端口? A. 40B. 30C. 20D. 10下面那款产品不支持分布式转发？A.