CCNA(640-802)题库V104.4(纯净打印版).pdf
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1、Exam A QUESTION 1 When you are logged into a switch, which prompt indicates that you are in privileged mode? A. % B. C. D. $ E. # QUESTION 2 Which command shows system hardware and software version information? A. show configuration B. show environment C. show inventory D. show platform E. show vers
2、ion QUESTION 3 Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13. An 802. 1Q trunk is configured between the two switches. On CAT1, VLAN 10 is chosen as native, but on CAT2 the native VLAN is not specified.What will happen in this scenario? A. 802.1Q giants fram
3、es could saturate the link. B. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames. C. A native VLAN mismatch error message will appear. D. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames. QUESTION 4 Which command would correctly configure a serial port on a router with the last
4、usable host address in the 192.216.32.32/29 subnet? A. Router(config-if)# ip address 192.216.32.38 255.255.255.240 B. Router(config-if)# ip address 192.216.32.39 255.255.255.224 C. Router(config-if)# ip address 192.216.32.63 255.255.255.248 D. Router(config-if)# ip address 192.216.32.39 255.255.255.
5、248 E. Router(config-if)# ip address 192.216.32.63 255.255.255.248 F. Router(config-if)# ip address 192.216.32.38 255.255.255.248 QUESTION 5 The network default gateway applying to a host by DHCP is 192.168.5.33/28. Which option is the valid IP address of this host? A. 192.168.5.55 B. 192.168.5.47 C
6、. 192.168.5.40 CCNA(640-802)题库)题库V104.4 鸿鹄论坛 1 D. 192.168.5.32 E. 192.168.5.14 QUESTION 6 Which two addresses can be assigned to a host with a subnet mask of 255.255.254.0? (Choose two.) A. 113.10.4.0 B. 186.54.3.0 C. 175.33.3.255 D. 26.35.2.255 E. 17.35.36.0 QUESTION 7 The network administrator has
7、 asked you to check the status of the workstations IP stack by pinging the loopback address. Which address would you ping to perform this task? A. 10.1.1.1 B. 127.0.0.1 C. 192.168.0.1 D. 239.1.1.1 QUESTION 8 Workstation A has been assigned an IP address of 192.0.2.24/28. Workstation B has been assig
8、ned an IP address of 192.0.2.100/28. The two workstations are connected with a straight-through cable. Attempts to ping between the hosts are unsuccessful. What two things can be done to allow communications between the hosts? (Choose two.) A. Replace the straight-through cable with a crossover cabl
9、e. B. Change the subnet mask of the hosts to /25. C. Change the subnet mask of the hosts to /26. D. Change the address of Workstation A to 192.0.2.15. E. Change the address of Workstation B to 192.0.2.111. QUESTION 9 Your ISP has given you the address 223.5.14.6/29 to assign to your routers interfac
10、e. They have also given you the default gateway address of 223.5.14.7. After you have configured the address, the router is unable to ping any remote devices. What is preventing the router from pinging remote devices? A. The default gateway is not an address on this subnet. B. The default gateway is
11、 the broadcast address for this subnet. C. The IP address is the broadcast address for this subnet. D. The IP address is an invalid class D multicast address. QUESTION 10 Which command is used to copy the configuration from RAM into NVRAM? A. copy running-config startup-config 鸿鹄论坛 2 B. copy startup
12、-config: running-config: C. copy running config startup config D. copy startup config running config E. write terminal QUESTION 11 Which command is used to load a configuration from a TFTP server and merge the configuration into RAM? A. copy running-config: TFTP: B. copy TFTP: running-config C. copy
13、 TFTP: startup-config D. copy startup-config: TFTP: QUESTION 12 A system administrator types the command to change the hostname of a router. Where on the Cisco IFS is that change stored? A. NVRAM B. RAM C. FLASH D. ROM E. PCMCIA QUESTION 13 Which command is used to configure a default route? A. ip r
14、oute 172.16.1.0 255.255.255.0 0.0.0.0 B. ip route 172.16.1.0 255.255.255.0 172.16.2.1 C. ip route 0.0.0.0 255.255.255.0 172.16.2.1 D. ip route 0.0.0.0 0.0.0.0 172.16.2.1 QUESTION 14 If IP routing is enabled, which two commands set the gateway of last resort to the default gateway? (Choose two.) A. i
15、p default-gateway 0.0.0.0 B. ip route 172.16.2.1 0.0.0.0 0.0.0.0 C. ip default-network 0.0.0.0 D. ip default-route 0.0.0.0 0.0.0.0 172.16.2.1 E. ip route 0.0.0.0 0.0.0.0 172.16.2.1 QUESTION 15 Which command would you configure globally on a Cisco router that would allow you to view directly connecte
16、d Cisco devices? 鸿鹄论坛 3 A. enable cdp B. cdp enable C. cdp run D. run cdp QUESTION 16 Which command is used to see the path taken by packets across an IP network? A. show ip route B. show route C. traceroute D. trace ip route QUESTION 17 Which command is used to debug a ping command? A. debug icmp B
17、. debug ip icmp C. debug tcp D. debug packet QUESTION 18 Which command displays CPU utilization? A. show protocols B. show process C. show system D. show version QUESTION 19 When configuring a serial interface on a router, what is the default encapsulation? A. atm-dxi B. frame-relay C. hdlc D. lapb
18、E. ppp QUESTION 20 What must be set correctly when configuring a serial interface so that higher-level protocols calculate the best route? A. bandwidth B. delay C. load D. reliability 鸿鹄论坛 4 QUESTION 21 A company implements video conferencing over IP on their Ethernet LAN. The users notice that the
19、network slows down, and the video either stutters or fails completely. What is the most likely reason for this? A. minimum cell rate (MCR) B. quality of service (QoS) C. modulation D. packet switching exchange (PSE) E. reliable transport protocol (RTP) QUESTION 22 Which layer in the OSI reference mo
20、del is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication? A. transport B. network C. presentation D. session E. application QUESTION 23 Data transfer is slow between the source and destination. The quality of se
21、rvice requested by the transport layer in the OSI reference model is not being maintained. To fix this issue, at which layer should the troubleshooting process begin? A. presentation B. session C. transport D. network E. physical QUESTION 24 Which protocols are found in the network layer of the OSI
22、reference model and are responsible for path determination and traffic switching? A. LAN B. routing C. WAN D. network QUESTION 25 Which command reveals the last method used to powercycle a router? A. show reload B. show boot 鸿鹄论坛 5 C. show running-config D. show version QUESTION 26 Which three optio
23、ns are valid WAN connectivity methods? (Choose three.) A. PPP B. WAP C. HDLC D. MPLS E. L2TPv3 F. ATM QUESTION 27 Refer to the exhibit. Which WAN protocol is being used? A. ATM B. HDLC C. Frame Relay D. PPP QUESTION 28 What is the difference between a CSU/DSU and a modem? A. A CSU/DSU converts analo
24、g signals from a router to a leased line; a modem converts analog signals from a router to a leased line. B. A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line. C. A CSU/DSU converts digital signals from a router to a phon
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