南昌商學(xué)院《CCNA三》課程期末考試試卷

1、系別： 專業(yè)班級： 姓名： 學(xué)號： 裝 訂 線 南昌商學(xué)院CCNA三課程期末考試試卷(A卷)適用專業(yè)計科03級考試所需時間120試卷總分100考試日期6月 日開卷 / 閉卷閉卷成 績一、選擇題（共35題 每小題2分）1、Which of the following statements are true regarding RIP v1 and v2? (Choose three.) ABoth RIP versions use hop count.BBoth RIP versions can provide authentication of update sources.CBoth RIP

2、 versions use 16 hops as a metric for infinite distance.DRIP v1 uses split horizon to prevent routing loops while RIP v2 does not.ERIP v1 uses hold-down times to prevent routing loops while RIP v2 does notFRIP v1 broadcasts routing table updates, while RIP v2 multicasts its updates.2、Router1 and Rou

3、ter2 shown in the topology have been configured with the no ip subnet-zero command. Which of the following valid VLSM network numbers could be used for the serial link between Router1 and Router2? (Choose two.)A192.168.1.0/30 B、192.168.1.4/30 C、192.168.1.8/30 D、192.168.1.96/30 E、192.168.1.138/30 F、1

4、92.168.1.190/303、Refer to the graphic. Which of the following commands is used to configure switch port 2 for the host on VLAN 2?A(config)# interface fastethernet 0/2(config-if)# switchport mode access(config-if)# switchport access vlan 2B(config)# interface vlan 2(config-subif)# switchport mode acc

5、ess 2C(config)# interface vlan 2(config-subif)# switchport mode trunk dot1qD(config)# interface fastethernet 0/2(config-if)# vlan 24、Which subnet mask is represented by the /21 notation? A. 255.255.224.0 B. 255.255.248.0 C. 255.255.252.0 D. 255.255.240.0 5、What does OSPF use to reduce the number of

6、exchanges of routing information in networks where large numbers of neighbors are present? (Choose two.) A、root router B、backup root router C、domain router D、 backup domain router E、designated router F、backup designated router 6Refer to the graphic. If the network is running OSPF, which subnetworks

7、can be assigned to the serial links between Router2 and the other routers shown in the diagram?A192.1.1.4/30 and 192.1.1.8/30B192.1.1.32/30 and 192.1.1.160/30C192.1.1.96/30 and 192.1.1.100/30D192.1.1.160/30 and 192.1.1.164/30E192.1.1.192/30 and 192.1.1.196/307Which of the following are required when

8、 adding a network to the OSPF routing process configuration? (Choose three.) A、network address B、loopback address C、autonomous system number D、subnet mask E、wildcard mask F、area ID8、What does OSPF use to calculate the cost to a destination network?A、bandwidth B、bandwidth and hop count C、bandwidth an

9、d reliability D、bandwidth, load, and reliablity 9、A switch is operating in VTP client mode. What is true about the operations that can be performed by the switch?AVLANs that are created are not included in advertisements.BIt can only adopt VLAN changes advertised from a VTP server.CIt advertises top

10、ology changes out all trunk ports.DIt can modify existing VLANs, but can not create new ones.EIt can create and modify VLANs, but can not delete existing ones.10、What tables does EIGRP maintain for each routed protocol it supports? (Choose three.)Aadjacency table Btopology table Cneighbor table Drou

11、ting table Elink state table F、ARP table11、 Host 192.168.1.66 in the network illustrated is unable to ping host 192.168.1.130. How must EIGRP be configured to enable connectivity between the two hosts? (Choose two.)AR1(config-router)# network 192.168.1.128.BR1(config-router)# auto-summaryCR1(config-

12、router)# no auto-summary.DR2(config-router)# no auto-summary.ER2(config-router)# auto-summaryFR2(config-router)# network 192.168.1.6412、Which of the following is used to build a switching table? Asource IP addresses Bdestination IP addresses.Cdestination MAC addresses Dsource MAC addresses13、Refer t

13、o the graphic. Which point in the frame must be reached before it is forwarded by a switch that is using fast-forward mode? A、A B、B C、C D、D E、E F、F14、At which layer of the hierarchical design model do users connect to the network? A、application B、access C、distribution D、network E、core15、Although the

14、 backup configuration file on a Catalyst 2950 switch has been erased, it is found that VLANs are still configured in the switch. What must be done to clear the configured VLANs?A、The vlan.dat file must be erased and the switch reloaded.B、The switch flash memory must be purged and the switch rebooted

15、. C、The vlan.cfg file must be renamed and IOS restarted. D、Each VLAN needs to be deleted individually and the configuration saved. E、The switch needs to be restarted, because the old running configuration is still in memory. 16、Refer to the graphic. Which commands would direct outbound traffic from

16、R1 to the ISP and inbound traffic from the ISP to network 200.1.1.0?A、R1(config)# ip route 144.1.1.0 255.255.255.192 serial 0/0ISP(config)# ip route 0.0.0.0 0.0.0.0 serial 0/1BR1(config)# ip route 0.0.0.0 0.0.0.0 serial 0/0ISP(config)# ip route 0. 0.0.0 0.0.0.0 serial 0/0CR1(config)# ip route 0.0.0.

17、0 0.0.0.0 serial 0/0ISP(config)# ip route 200.1.1.0 255.255.255.0 serial 0/1DR1(config)# ip route 144.1.1.0 255.255.255.192 serial 0/0ISP(config)# ip route 200.1.1.0 255.255.255.0 serial 0/117、Which of the following are valid STP port states? (Choose three.)Ablocking Blearning Cconverging Dlistening

18、 E、switching18、Which of the following are problems that can occur in redundantly switched networks? (Choose three.) A、broadcast storms B、corrupted ARP tables C、 duplicate MAC addresses D、inaccurate routing tables E、multiple copies of Ethernet frames F、MAC address table instability19、Refer to the gra

19、phic. Router A and C are completely configured and the administrator needs to configure the routing protocol on Router B so that communication occurs throughout the network. Which of the following commands configures routing on Router B?A、B(config)# router eigrp 1B(config)# network 192.168.10.0 0.0.

20、0.3B(config)# network 192.168.10.4 0.0.0.3B(config)# network 192.168.10.128 0.0.0.192B、B(config)# router eigrp 1B(config)# network 192.168.10.0 0.0.0.3 area 0B(config)# network 192.168.10.4 0.0.0.3 area 0B(config)# network 192.168.10.128 0.0.0.192 area 0C、B(config)# router eigrp 1B(config)# network

21、192.168.10.0 0.0.0.3 no-summaryB(config)# network 192.168.10.4 0.0.0.3 no-summaryB(config)# network 192.168.10.128 0.0.0.192 no-summaryD、B(config)# router eigrp 1B(config-router)# network 192.168.10.020、How much time does it take for a switch port to go from the blocking state to the forwarding stat

22、e? A2 seconds B15 seconds C. 20 seconds D50 seconds21、Refer to the graphic above. The network has stabilized and SW-F has been elected root bridge of the STP tree. Network traffic indicates that SW-A would be a better selection for the root bridge. How can the network administrator accomplish this t

23、ask?A、change the bridge priority of SW-F to a lower valueB、change the bridge priority of SW-F to a higher valueC、change the bridge priority of SW-A to a lower valueD、change the bridge priority of SW-A to a higher value22、Refer to the graphic. Assuming that VLANs are not configured on the switch, how

24、 many broadcast domains are there?Aone Btwo Cthree Dfour Efive Fsix23、Consider the network shown in the graphic. Which of the following IP addresses would be valid for a company that is leasing a single Class C network address and using VLSM for maximum efficiency?A、200.1.1.64 /26 for the 50 users20

25、0.1.1.128 /27 for the 25 users200.1.1.176 /27 for the 10 users200.1.1.192 /30 for one pair of serial links200.1.1.196 /30 for the second pair of serial linksB200.1.1.0 /26 for the 50 users200.1.1.80 /27 for the 25 users200.1.1.96 /27 for the 10 users200.1.1.128 /30 for one pair of serial links200.1.

26、1.132 /30 for the second pair of serial linksC200.1.1.64 /26 for the 50 users200.1.1.128 /27 for the 25 users200.1.1.160 /28 for the 10 users200.1.1.176 /30 for one pair of serial links200.1.1.180 /30 for the second pair of serial linksD200.1.1.0 /26 for the 50 users200.1.1.64 /26 for the 25 users20

27、0.1.1.128 /27 for the 10 users200.1.1.192 /30 for one pair of serial links200.1.1.192 /30 for the second pair of serial links24、Refer to the graphic. What will be the result of DR elections in the network presented in the graphic using OSPF? (Choose three.)ARTC will be DR of the 10.5.0.0/24 network.

28、BRTD will be DR of the 10.5.0.0/24 network.CRTA will be DR of the 10.4.0.0/24 network.DRTD will be DR of the 10.4.0.0/24 network.ERTB will be DR of the 10.7.0.0/24 network.FRTD will be DR of the 10.7.0.0/24 network.25、Which of the following states the 80/20 rule of end-to-end VLANs?A80% of network r

29、esources should be remote and 20% should be on the local VLAN. B80% of VLANs should be static and the remaining 20% should be dynamic. C80% of network traffic should be local and 20% remote. D80% of the network sources should be centralized at the core layer and the remaining 20% at the distribution

30、 layer. E80% of traffic should be routed and 20% should be switched.26、What is an advantage of building a network such as the one shown in the graphic?Aprovides multiple paths for connectivity in the event of link failureBprovides alternate routes when spanning tree has a problemCprovides alternate

31、network routes when the Spanning Tree Protocol is convergingDprovides concurrent paths for faster data transfers27、A network administrator has configured a switch with three VLANs: VLAN1, VLAN2, and VLAN3. Port 10 is to be assigned to VLAN3. Which of the following commands are needed to assign port

32、10 to VLAN3? (Choose three.) A、Switch_1(config)# switchport interface fastethernet 0/10 B、Switch_1(config-if)# switchport mode accessC、Switch_1(config-if)# switchport access.D、Switch_1(config-if)# switchport access vlan 3.E、Switch_1(config)# interface fastethernet 0/10.F、Switch_1# vlan database28、Re

33、fer to the graphic. Which of the following addresses is the most efficient summarization of the routes attached to Router A?A192.168.4.0 /20 B192.168.0.0 /16C192.168.4.0 /24 D192.168.8.0 /22E192.168.8.0 /29 F192.168.8.0 /3029、Which switching method increases latency and reliability more than any oth

34、er method?Acut-through Bfast-forwardCfragment-free Dstore-and-forward30、Refer to the graphic. The host on VLAN 2 cannot communicate with the host on VLAN 3. Which of the following could be the problem based on the output of the show interface fastethernet 0/1 command from the switch?AThe switch port

35、 1 is not set to access mode.BThe router interface connected to switch port 1 is shut down.CThe router is not configured for trunking.DThe switch port is not configured for full duplex or a speed of 100 Mbps.31、Consider the networks shown in the graphic. Which of the following is the correct configu

36、ration for Router B if OSPF is being used as the routing protocol?AB(config)# router ospf 0B(config-router)# network 10.10.10.64 0.0.0.31 area 0B(config-router)# network 10.10.10.0 0.0.0.3 area 0BB(config)# router ospf 1B(config-router)# network 10.10.10.64 0.0.0.63 area 0B(config-router)# network 1

37、0.10.10.0 0.0.0.3 area 0CB(config)# router ospf 99B(config-router)# network 10.10.10.64 255.255.255.224 area 0B(config-router)# network 10.10.10.0 255.255.255.248 area 0DB(config)# router ospf 1B(config-router)# network 10.10.10.64 0.0.0.31 area 0B(config-router)# network 10.10.10.0 0.0.0.3 area 032

38、、Which of the following must be used when configuring a router interface for VLAN trunking? (Choose three.)A、one subinterface per VLAN B、one physical interface for each subinterfaceC、one IP network or subnetwork for each subinterface D、one trunked link per VLANE、a management domain for each subinter

39、face F、a compatible trunking protocol encapsulation for each subinterface33、Which of the following commands can be used to configure the default management VLAN on a Cisco Catalyst switch?A、(config)# interface fastethernet 0/1(config-if)# ip address 10.0.0.1 255.255.255.0(config-if)# no shutdownB(co

40、nfig)# interface vlan 1(config-subif)# ip address 10.0.0.3 255.255.255.0(config-subif)# no shutdownC(config)# interface management vlan(config-subif)# ip address 10.0.0.3 255.255.255.0(config-subif)# no shutdownD(config)# interface fastethernet 0/1(config-if)# switchport mode vlan 1(config-if)# no s

41、hutdown34、Refer to the graphic. Both routers are configured using RIP v1. Both routers are sending updates about the directly connected routes. R1 can successfully ping the serial interface of R2. The routing table on R1 does not contain any dynamically learned routes from R2, and the routing table

42、on R2 shows no dynamically learned routes from R1. What is the problem?ASubnetting is not supported by RIP v1.BOne of the routers needs a clock rate on the serial interface.CCIDR is not supported by RIP v1.DVLSM is not supported by RIP v1.35、What does a constant amber SYSTEM LED indicate on a Catalyst switch?A、The switch is going through POST.B、The switch is in the process of initializing ports.C、The switch has failed POST.D、The switch has passed POST and is working