新10月CCNA题库word版151~200题.doc
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1、QUESTION 151Refer to the topology and router output shown in the exhibit. A technician is troubleshooting hostconnectivity issues on the switches. The hosts in VLANs 10 and 15 on Sw11 are unable to communicatewith hosts in the same VLANs on Sw12. Hosts in the Admin VLAN are able to communicate. The
2、port-to-VLAN assignments are identical on the two switches. What could be the problem?A. The Fa0/1 port is not operational on one of the switches.B. The Link connecting the switches has not been configured as a trunk.C. At lease one port needs to be configured in VLAN 1 for VLANs 10 and 15 to be abl
3、e to communicate.D. Port FastEthernet 0/1 needs to be configured as an access link on both switches.E. A router is required for hosts on Sw11 in VLANs 10 and 15 to communicate with hosts in the sameVLAN on Sw12.QUESTION 152You have finished physically installing an access point on the ceiling at you
4、r office. At a minimum, whichparamenter must be configured on the access point in order to allow a wireless client to operate on it?A. AESB. PSKC. SSIDD. TKIPE. WEPQUESTION 153Refer to the exhibit. A network administrator needs to add a new VLAN, named VLAN3, to the networkshown. Unfortunately, ther
5、e is not another FastEthernet interface on R1 to connect to the new VLAN3.Which approach is the most cost effective solution for this problemA. Purchase a new FastEthernet module and install it on R1B. Replace R1 with a new router that has at least three FastEthernet interfaces.C. Configure a second
6、 switch to support VLAN3 with a VLAN trunk between SW1 and the new switch.D. Configure a single VLAN trunk between R1 and SW1 and configure subinterface on R1 interface foreach VLAN.E. Connect another router to a serial interface of R1. Use a FastEthernet interface on the new router forVLAN3QUESTION
7、 154Refer to the exhibit. When running EIGRP, What is required for RouterA to exchange routing updates withRouterCA. As numbers must be changed to match on all the routers.B. Loopback interface must be configured so a DR is elected.C. The no auto-summary command is needed on Router A and Router C.D.
8、 Router B needs to have two network statements, one for each connected networkQUESTION 155Refer to the exhibit. The two exhibit devices are the only Cisco devices on the network. The serial networkbetween the two devices has a mask of 255.255.255.252. Given the output that is shown, what threestatem
9、ents are true of these devices? (Choose three.)A. The Manchester serial address is 10.1.1.1B. The Manchester serial address is 10.1.1.2C. The London router is a Cisco 2610.D. The Manchester router is a Cisco 2610.E. The CDP information was received on port Serial0/0 of the Manchester router.F. The C
10、DP information was sent by port Serial0/0 of the London Router.QUESTION 156How is an EUI-64 format interface ID created from a 48-bit MAC address?A. by appending 0xFF to the MAC address.B. by prefixing the MAC address with 0xFFEE.C. by prefixing the MAC address with 0xFF and appending 0xFF to it.D.
11、by inserting 0xFFFE between the upper three bytes and the lower three bytes of the MAC addressE. by prefixing the MAC address with 0xF and inserting 0xF after each of its first three bytes.QUESTION 157Refer to the exhibit. After a RIP route is marked invalid on Router_1, how much time will elapse be
12、fore thatroute is removed from the routing table?QUESTION 158Refer to the exhibit. A network associate has configured the internetwork that is shown in the exhibit, buthas failed to configure routing properly.Which configuration will allow the hosts on the Branch LAN to access resources on the HQ LA
13、N with theleast impact on router processing and WAN bandwidth?A. HQ(config)# ip route 192.168.1.0 255.255.255.0 192.168.2.5Branch(config)# ip route 172.16.25.0 255.255.255.0 192.168.2.6B. HQ(config)# router ripHQ(config-router)# network 192.168.2.0HQ(config-router)# network 172.16.0.0Branch(config)#
14、 router ripBranch(config-router)# network 192.168.1.0Branch(config-router)# network 192.168.2.0C. HQ(config)# router eigrp 56HQ(config-router)# network 192.168.2.4HQ(config-router)# network 172.16.25.0Branch(config)# router eigrp 56Branch(config-router)# network 192.168.1.0Branch(config-router)# net
15、work 192.168.2.4D. HQ(config)# router ospf 1HQ(config-router)# network 192.168.2.4 0.0.0.3 area 0HQ(config-router)# network 172.16.25.0 0.0.0.255 area 0Branch(config)# router ospf 1Branch(config-router)# network 192.168.1.0 0.0.0.255 area 0QUESTION 159Which additional configuration step is necessary
16、 in order to connect to an access point that has SSIDbroadcasting disabled?A. Set the SSID value in the client software to public.B. Configure open authentication on the AP and the client.C. Set the SSID value on the client to the SSID configured on the AP.D. Configured MAC address filtering to perm
17、it the client to connect to the AP.QUESTION 160What is one reason that WPA encryption is preferred over WEP?A. A WPA key is longer and requires more special characters than the WEP key.B. The access point and the client are manually configured with different WPA key values.C. WPA key values remain t
18、he same until the client configuration is changed.D. The values of WPA keys can change dynamically while the system is used.QUESTION 161A network administrator is troubleshooing an EIGRP problem on a router and needs to confirm the IPaddresses of the devices with which the router has established adj
19、acency. The retransmit interval and thequeue counts for the adjacent routers also need to be checked. What command will display the requiredinformation?A. Router# show ip eigrp adjacencyB. Router# show ip eigrp topologyC. Router# show ip eigrp interfacesD. Router# show ip eigrp neighborsQUESTION 162
20、All WAN links inside the ABC University network use PPP with CHAP for authentication security. Whichcommand will display the CHAP authentication process as it occur between two routers in the network?A. show chap authenticationB. show interface serial0C. debug ppp authenticationD. debug chap authent
21、icationE. show ppp authentication chapQUESTION 163Refer to the exhibit. A network technician is asked to design a small network with redundancy. The exhibitrepresents this design, with all hosts configured in the same VLAN. What conclusions can be made aboutthis design?A. The design will function as
22、 intendedB. Spanning-tree will need to be used.C. The router will not accept the addressing scheme.D. The connection between switches should be a trunk.E. The router interfaces must be encapsulated with the 802.1Q protocol.QUESTION 164Refer to the exhibit. How should the FastEthernet0/1 port on the
23、2950 model switches that are shown in theexhibit be configured to allow connectivity between all devices?A. The ports only need to be connected by a crossover cable.B. SwitchX(config)# interface FastEthernet 0/1SwitchX(config-if)# switchport mode trunkC. SwitchX(config)# interface FastEthernet 0/1Sw
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