思科第一学期期末考试考题CCNA1

1、07 fit学生吿切反脾内25Refer to the exhibit Which Layer 2 protocol could be used inside nework A and network C?Q IPC TCPC UDP EthernetRefer to the exhibit Which set of devices contains only intermediary devices?C A, B, D; G A, B,巳 FC,D,G,IC G, H, I, JTiming andSynchronization BitsDestination andSource Physi

2、cal AddressesDestination and Source Logical Network AddressesDeStinatidni and Source ProCeSSi Number (ports)Encoded Application DataRefer to the exhibit The headers added at each layer are shown Which layer adds the destination and source process numbers to en is delivered to the correct application

3、? physical layerC data link layerC network layer transport layer4 The Layer 4 header con tains which type of information to aid in the delivery of data?C service port numberC host logical addressdevice physical addressCvirtual connection identifier5 Which fiber connector supports full-duplex Etherne

4、t?6 Which device should be used for routing a packet to a remote network?C access switchC DHCP server hubC routerHost A Host B MAC A A MACBBHost C Host D MAC CC MAC DDRefer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for host C is not in the MAC

5、SW1. How will SW1 handle the frame? Switch SW1 will drop the frame.C Switch SW1 will forward the frame to host C.C Switch SW1 will flood the frame out all ports.( Switch SW1 will flood the frame out all ports except port FaO/.254Refer to the exhibit A network technician has made several c

6、hanges to R1 since the configuration has last been saved The modified c did not produce the desired changes The technician wants to store a backup copy of the saved configuration on a TFTP server beforeWhich action will cause the unmodified data to be saved on the TFTP server?R1#copy running-config

7、tftpRemote host? Name of configuration file to write R1-run? R1-configWrite file R1-configto ? confirm uQU/tpUtR1ff copy startup-config tftpRemote host ? Name of configuration file to write R1-config?R1-startWrite file start to 192168.3.2? confirm uoutpuf onWQR1#copy

8、 runningtonfig tftpRemote host ? Name of configuration file to write R1-run? R1-configWrite file R1-configto ? confirm uQutput oaiittec/R1# copy startup.con fig tftpRemote host ? 54Name of configuration file to wite R1-run? R1 -configWrite file R1-configto 5

9、4? confirm uQutpiA Qfnitted9 Which three statements are true about network layer addressing? (Choose three.) 厂 It uniquely identifies each host.I- It assists in forwarding packets across internetworks厂 It uses a logical 32-bit IPv4 address.I It is not a configurable address.厂 It is a physical addres

10、s厂 It identifies the host from the first part of the address10 What is the result of using the clock rate 56000 command at the serial interface of the router? The interface is configured as a DCE deviceC The interface timers are clearedC The FastEthernet interface is made to emulate a serial in terf

11、ace by assigning it a timing signal. The IP address for the serial interface is configured11Company ABCA: 05J26B： 9/27Clerical: 1d8/27C： 5/27D: 5/27Admin: 192.1C8.100.627Examine the graphic with current configurations Host A in the Cleri

12、cal office failed and was replaced Although a ping to we the replacement computer cannot access the company network With proxy ARP disabled on the FaO/O interface of the New York rou likely cause of the problem?C network card failurenetwork cables unpluggedC IP address incorrectly entered

13、sub net mask incorrectly entered12 As network administrator, what is the subnet mask that allows 510 hosts given the IP address ?C C C C C C 2813 Which OSI layer uses a connection-oriented protocol to ensure reliab

14、le delivery of data? application layer厂 prese ntation layer session layerC transport layer14 A network has grown too large for technicians to configure network addresses and hosts files for name resolution Which two applica services should be added to the server to allow these needs to be satisfied

15、dynamically? (Choose two.)rDNSrFTP厂DHCP厂HTTP厂SMTP15FaO/1: 30MAC： 0030.8596.DE83 /InternetIP: 0MAC: 0007.4F74.AC09FaO/1: MAC： 0030.8517.44C3Fa0/0: Fa0/0: MAC: 0030.8596.DE82MAC:003Q.8517.44C4Refer to the exhibit Host A wants to access the In terne

16、t. Which combination of a Layer 2 address and a Layer 3 address will enable th host A?C Destination MAC: 0030.8596.DE83 Default gateway: 30C Destination MAC: 0030.8596.DE82 Default gateway: C Destination MAC: 0030.8517.44C4 Default gateway: C Destination MAC: 0030.85

17、17.44C4 Default gateway: 3016 A network administrator is asked to design a new addressing scheme for a corporate network There are 60 users in the main office, branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the research office Which VLSM addressing sche

18、me the /24 network will fulfill the requirements while wasting the fewest addresses?/26 mainC2/26 branch4/26 manufacturing6/27 sales 28/28 research厂 /26 main4/26 branch28/27 manufacturing192.1

19、68.88.160/28 sales76/29 research厂 /27 main2/27 branch4/28 manufacturing0/29 sales8/30 research/27 main4/28 branch07 fit学生吿切18反脾内250/28 manufacturing6/29 sales04/30 rese

20、arch17 Which physical connector type is used fora serial V.35 connection to the CSU/DSU?07 fit学生吿切Refer to the exhibit Which two facts can be determined about the topology? (Choose two.) 厂 Four collision domains are present厂 One logical network is represented厂 Two broadcast domains are present.厂 Thr

21、ee networks are needed厂 Three logical address ranges are required19 What are three characteristics of CSMA/CD? (Choose three.)I _ It monitors the media for presence of a data signal.厂After detecting a collision, hosts can resume transmission after a random timer has expired.厂 A jam signal is used to

22、 ensure that all hosts are aware that a collision has occurred厂 Devices can be configured with a higher transmission priority Data is transmitted only whe n the data sign al is present I It uses a token system to avoid collisions.Kouterll int serial 0X0/0Houtei*tt no shutdown Koutei*conf ig-iFMt exi

23、t Kouterconf ig)ttRefer to the exhibit The serial interface of the router was configured with the use of the commands that are shown The router cann router that is directly connected to in terface serial 0/0/0 What should the network technician do to solve this problem? Configure the description at

24、interface serial 0/0/0.C Configure an IP address on interface serial 0/0/0.C Remove the no shutdown command at interface serial 0/0/0f* Reboot the router.21 Which OSI layer uses the header information to reassemble the data segments into streams?C application layer network layerC presentation layerC

25、 session layer transport layer22Fa0/001FaO/154192 J 68.1.191Default gatewayRefer to the exhibit. The NAT functionality of the router is enabled to provide Internet access to the PC. However, the PC is still unabliInternet. Which IP address should be changed to 209.16

26、5.201.1 to enable the PC to access the Internet?C 91C 0123C C 54C:kWINDOWSsystem32Kcm nslookupDefa uJLt Server : resolver 1. xvrz. local fiddkess： 2.abed .conserver :peso lverl xnloica.lAddress = 2Mane i www-abc d con Address： 172.168.1

27、.5.klnn .conserver :pesolverl.xyz.localAddress二 0.JL0i0.32Wane: uww-klwn.con Address： 1?9.triui.con server :resolverl.localfiddress2 t010.10.32Wane: wwwuiccmAddress： 1?00Refer to the exhibit A technician uses the nslookup command on the PC and views the output that is displayed in

28、the exhibit What isof the primary domain name server used by the host?29C 0024 Which memory contents will change as a result of using the Router# erase startup-config command on a router?C RAMC ROMC flash反脾内2507 fit学生吿切c NVRAM25 While configuring a router,

29、a network technician wants to name the router. Which prompt should the technician see when entering tcommand? Router* Router#C Router(config)#C Router(config-line)#26Fa0/0Fa0/1I厂/NetworkC： netstatRoute TableInterface List0x1 0x2 .00 3c M2 Schedule!* MinipoFtMS TCP Loopback intepac：frIntel PBO/100 UE

30、 Hetwork Connection - Pocket27反脾内25Active Routes：Network Dest inationNetmaskGatewayInterfaceHetric192.1G.1.25420255-0.0.0Jl2700 J255.255-255.020Refer to the exhibit The PC, the routing table of which is displayed, is configu

31、red correctly To which network device or interface doe: 54 belong?switchrouter interface faO/Orouter interface faO/107 fit学生吿切反脾内2528Pair 3Pair 3Refer to the exhibit A network administrator is troubleshooting a link that is down between Routerl and Router2 To correct the pro wire pairs ne

32、ed to be switched on one of the Ether net cable en ds? pair land pair 2C pair 1 and pair 3厂 pair 2 and pair 3C pair 2 and pair 410.0-0.3255.255.25&.0Refer to the exhibit A PC is connected to a network Which action will verify that the PC can communicate with its default gateway?

33、C Use the ping command.C Use the ipconfig command.07 fit学生吿切 Use the ipconfig/all commandC Use the ping 54 command.反脾内2529Sw256# show mac-address-table Mac AddressVianMac AddressTypePortsAll0011.5CCC.A9COSTATICCPU10008.Q2DE.C04BDYNAMICFaO/2310008.02DE.B94ADYNAMICFaO/2410007.4F74.AC

34、09DYNAMICFaO/1910007.C2B4.3421DYNAMICFaO/12Total Mac Addresses for this criterion: 5 Sw256#Refer to the exhibit. Host B was powered off. What change will occur in the MAC table of the switch? The table will remain unaffected.C The switch will remove the MAC address at FaO/19C The switch will retain

35、the MAC address until host B is powered on againC The switch will rebuild the MAC table by assigning the 阡FF.FFFF.FF阡 address to port FaO/19.30 What information is contained in the header of Layer 3 to help data delivery? port numberC device physical address destination host logical address virtual

36、connection identifier31A network technician is tasked with setting up a network for six users, but the users should be able to use their accounts to log on frosix computers What type of network should be used?C workgroup P2P applicationspeer-to-peer networkC client-server network3/24192.16

37、S.1 .tt/24SOiOnFaOiOServer154eagle-seruer.exafnple.cacn.2 SO/1070FaOAl.1 /24PC1PCJ24Refer to the exhibit. A web browser is running on host PCI with an IP address /24. A dynamic port number of 49152 is assigr browser. The browser sends a request fora web page to

38、 the web server with an IP address 54/24. Which statement is truC The session is established using TCP, and the socket number for the web server is 54: 80.C The session is established using TCP, and the socket number for the web server is 54:49152.C The session is es

39、tablished using UDPZ and the socket number for the web server is 54: 80.C The session is established using UDPZ and the socket number for the web server is 54:49152.Refer to the exhibit An administrator on PCI wants to view some HTML code from a web page housed on the web serve

40、r. Which cliei will allow this request to be started?07 fit学生吿切Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on Routerl? an FTP clientC a Telnet client厂 a terminal emulation programC a web browser35 What are two characteristics of the d

41、ata link layer? (Choose two.)I- It segments and reorders the dataIIt exchanges the frames between nodes厂 It defines the method by which network devices place data onto the media厂It man ages the transfer of data between the processes that run on each host.I- It retrieves signals from the media and re

42、stores them to their bit representations36 A network administrator wants to restrict access to the router privileged EXEC mode Which password should the administrator use?( enableC aux consoleC VTY37 Which three IPv4 addresses represent a broadcast fora subnet? (Choose three.)F 3 /26r 172.

43、16.4.129 /26厂 91/26厂 1/2738r 5 /27厂 21/27Router 1192.16B.1.1Refer to the exhibit Host X is unable to communicate with host Y Which comma nd can be run at host X to determine which intermec responsible for this failure?C telnet ( ping C ft

44、p 39Routerl (coni.g) t In七era.ce sexia.1 0/0/0Routerl(config-if)# ip address Routerl(config-if)clock rate 64000Routerl(conEig )护 no shu七Routerl(config-if)非 exitRefer to the exhibit Which option shows the correct topology given the configuration of Routerl?C tracert

45、 反脾内25S 0/0/0/20DCE Z-DTE40 If an administrator wished to return a router to the default state, what additional step must be taken after issuing the command eras config? Reload the device.C Issue the command copy running-config start-up config广 Perform a show running-config to v

46、erify that the file was removedC Enter the interface commands to allow the device to connect to the network41 By using the ipconfig command, a network administrator determines that a workstation has the address 8 with 29 bits sei mask To what network does the workstation belong?C 192.168.

47、3.8C 6C 4C 242 Which statement is true about router hostnames? A hostname should be unique on each router.C A router hostname cannot contain capital letters A router host name is configured in privileged executive mode C A router host name must be created before any

48、other configurations can be added to the device.43 A user types the enable comma nd. What task can be performed at the privileged EXEC mode?Configure the device厂 Configure individual interfaces广 Configure individual terminal linesC Issue show and debug commands44Node 1Node 2Limited to two no desRefe

49、r to the exhibit Which logical topology describes the exhibited network?C* starring广 point-to-pointC multi-access454Fa0/0interface FastEthernetO/Oip address 10.1.492.1 Sp66d autofull-duplex interface Serial3/0ipaddress 1S2.317.1 255255.255.0 encapsulation pppRefer to

50、 the exhibit A user wants to access the Inter net from the PC. A part of the running configuration of the router is shown Whic gateway IP address should be configured at the PC to enable this access?C C C 4C 46 Which statement is true about the ICMP protocol? It is an application layer protocol. It is designed to make IP a reliable protocol.C It is often filtered out of networks for security purposes If a host does not respond to an ICMP echo request, the host is not functioning.47Router# show interfaces serial 0/0/1SeriaLQ/