思科第一学期期末考试最新考题CCNA1.docx

1、思科第一学期期末考试最新考题CCNA11Refer to the exhibit. Which Layer 2 protocol could be used inside nework A and network C?IPTCPUDPEthernet2Refer to the exhibit. Which set of devices contains only intermediary devices?A,B,D,GA,B,E,FC,D,G,IG,H,I,J3Refer to the exhibit. The headers added at each layer are shown. Wh

2、ich layer adds the destination and source process nu ensure that data is delivered to the correct application?physical layerdata link layernetwork layertransport layer4 The Layer 4 header contains which type of information to aid in the delivery of data?service port numberhost logical addressdevice

3、physical addressvirtual connection identifier5 Which fiber connector supports full-duplex Ethernet?6 Which device should be used for routing a packet to a remote network?access switchDHCP serverhubrouter7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC

4、address for host C is no table of switch SW1. How will SW1 handle the frame?Switch SW1 will drop the frame.Switch SW1 will forward the frame to host C.Switch SW1 will flood the frame out all ports.Switch SW1 will flood the frame out all ports except port Fa0/1.8Refer to the exhibit. A network techni

5、cian has made several changes to R1 since the configuration has last been saved. Th configuration did not produce the desired changes. The technician wants to store a backup copy of the saved configuration server before reloading. Which action will cause the unmodified data to be saved on the TFTP s

6、erver?9 Which three statements are true about network layer addressing? (Choose three.)It uniquely identifies each host.It assists in forwarding packets across internetworks.It uses a logical 32-bit IPv4 address.It is not a configurable address.It is a physical address.It identifies the host from th

7、e first part of the address.10 W hat is the result of using the clock rate 56000 command at the serial interface of the router?The interface is configured as a DCE device.The interface timers are cleared.The FastEthernet interface is made to emulate a serial interface by assigning it a timing signal

8、.The IP address for the serial interface is configured.11Examine the graphic with current configurations. Host A in the Clerical office failed and was replaced. Although a ping to 1 successful, the replacement computer cannot access the company network. With proxy ARP disabled on the Fa0/0 interfa Y

9、ork router, what is the likely cause of the problem?network card failurenetwork cables unpluggedIP address incorrectly enteredsubnet mask incorrectly entered12 As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?255.255.0.0255.255.248.0255.255.252.

10、0255.255.254.0255.255.255.0255.255.255.12813Which OSI layer uses a connection-oriented protocol to ensure reliable delivery of data? application layerpresentation layersession layertransport layer14 A network has grown too large for technicians to configure network addresses and hosts files for name

11、 resolution. Which tw layer services should be added to the server to allow these needs to be satisfied dynamically? (Choose two.)DNSFTPDHCPHTTPSMTP15Refer to the exhibit. Host A wants to access the Internet. Which combination of a Layer 2 address and a Layer 3 address w access from host A?Destinati

12、on MAC: 0030.8596.DE83 Default gateway: 209.165.202.130Destination MAC: 0030.8596.DE82 Default gateway: 172.16.9.2Destination MAC: 0030.8517.44C4 Default gateway: 172.16.1.1Destination MAC: 0030.8517.44C4 Default gateway: 209.165.202.13016 A network administrator is asked to design a new addressing

13、scheme for a corporate network. There are 60 users in the m users in the branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the research office. Which VLS scheme that uses the 192.168.88.0/24 network will fulfill the requirements while wasting the fewest addresses?192.1

14、68.88.0/26 main192.168.88.32/26 branch192.168.88.64/26 manufacturing192.168.88.96/27 sales192.168.88.128/28 research192.168.88.0/26 main192.168.88.64/26 branch192.168.88.128/27 manufacturing192.168.88.160/28 sales192.168.88.176/29 research192.168.88.0/27 main192.168.88.32/27 branch192.168.88.64/28 m

15、anufacturing192.168.88.80/29 sales192.168.88.88/30 research192.168.88.0/27 main192.168.88.64/28 branch192.168.88.80/28 manufacturing192.168.88.96/29 sales192.168.88.104/30 research17 W hich physical connector type is used for a serial V.35 connection to the CSU/DSU?18Refer to the exhibit. Which two

16、facts can be determined about the topology? (Choose two.)Four collision domains are present.One logical network is represented.Two broadcast domains are present.Three networks are needed.Three logical address ranges are required.19 W hat are three characteristics of CSMA/CD? (Choose three.)It monito

17、rs the media for presence of a data signal.After detecting a collision, hosts can resume transmission after a random timer has expired.A jam signal is used to ensure that all hosts are aware that a collision has occurred.Devices can be configured with a higher transmission priority.Data is transmitt

18、ed only when the data signal is present.It uses a token system to avoid collisions.20Refer to the exhibit. The serial interface of the router was configured with the use of the commands that are shown. The ro ping the router that is directly connected to interface serial 0/0/0. What should the netwo

19、rk technician do to solve this probConfigure the description at interface serial 0/0/0.Configure an IP address on interface serial 0/0/0.Remove the no shutdown command at interface serial 0/0/0Reboot the router.21 W hich OSI layer uses the header information to reassemble the data segments into stre

20、ams?application layernetwork layerpresentation layersession layertransport layer22Refer to the exhibit. The NAT functionality of the router is enabled to provide Internet access to the PC. However, the PC to access the Internet. Which IP address should be changed to 209.165.201.1 to enable the PC to

21、 access the Internet?192.168.1.191192.168.1.101192.168.1.1192.168.1.25423Refer to the exhibit. A technician uses the nslookup command on the PC and views the output that is displayed in the exthe IP address of the primary domain name server used by the host?10.10.10.32192.168.1.5192.168.1.99192.168.

22、2.10024 Which memory contents will change as a result of using the Router#erase startup-configcommand on a router?RAMROMflashNVRAM25 W hile configuring a router, a network technician wants to name the router. Which prompt should the technician see when hostname command?RouterRouter#Router(config)#Ro

23、uter(config-line)#26Refer to the exhibit. The PC, the routing table of which is displayed, is configured correctly. To which network device or in the IP address 192.168.1.254 belong?PCswitchrouter interface fa0/0router interface fa0/127Refer to the exhibit. A network administrator is troubleshooting

24、 a link that is down between Router1 and Router2. To corre problem, which wire pairs need to be switched on one of the Ethernet cable ends?pair 1 and pair 2pair 1 and pair 3pair 2 and pair 3pair 2 and pair 428Refer to the exhibit. A PC is connected to a network. Which action will verify that the PC

25、can communicate with its defaultUse the ping 127.0.0.1 command.Use the ipconfig command.Use the ipconfig/all command.Use the ping 10.0.0.254 command.29Refer to the exhibit. Host B was powered off. What change will occur in the MAC table of the switch?The table will remain unaffected.The switch will

26、remove the MAC address at Fa0/19.The switch will retain the MAC address until host B is powered on again.The switch will rebuild the MAC table by assigning the FFFF.FFFF.FFFF address to port Fa0/19.30What information is contained in the header of Layer 3 to help data delivery? port numberdevice phys

27、ical addressdestination host logical addressvirtual connection identifier31A network technician is tasked with setting up a network for six users, but the users should be able to use their accounts t any of the six computers. What type of network should be used?workgroupP2P applicationspeer-to-peer

28、networkclient-server network32Refer to the exhibit. A web browser is running on host PC1 with an IP address 10.10.2.2/24. A dynamic port number of 49 assigned to the browser. The browser sends a request for a web page to the web server with an IP address 192.168.1.25 statement is true?The session is

29、 established using TCP, and the socket number for the web server is 192.168.1.254: 80.The session is established using TCP, and the socket number for the web server is 192.168.1.254: 49152.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 80.The session

30、 is established using UDP, and the socket number for the web server is 192.168.1.254: 49152.33Refer to the exhibit. An administrator on PC1 wants to view some HTML code from a web page housed on the web serveapplication will allow this request to be started?34Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on Router1?an FTP clienta Telnet clienta t