CCNA题库6

（没有写answer的题目，淡蓝色的选项为答案）

76. Which command would correctly configure a serial port on a router with the last 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 192.216.32.39 255.255.255.248 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

77. 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. 192.168.5.40 D. 192.168.5.32 E. 192.168.5.14

78. Which two addresses can be assigned to a host with a subnet mask of 255.255.2.0? (Choose two.) A. 113.10.4.0 B. 186..3.0 C. 175.33.3.255 D. 26.35.2.255 E. 17.35.36.0

79. The network administrator has asked you to check the status of the workstation's 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

80. Workstation A has been assigned an IP address of 192.0.2.24/28. Workstation B has been assigned 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 cable. B. Change the subnetmask of the hosts to /25. C. Change the subnet mask of the hosts to /26.

D. Change the address of WorkstationA to 192.0.2.15. E. Change the address of Workstation B to 192.0.2.111.

81. Your ISP has given you the address 223.5.14.6/29 to assign to your router's interface. 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 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.

82. Which command is used to copy the configuration from RAM into NVRAM? A. copy running-config startup-config B. copy startup-config: running-config C. copy running config startup config D. copy startup config running config E. write terminal

83. 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 TFTP: startup-config D. copy startup-config: TFTP:

84. 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

85. Which command is used to configure a default route? A. ip route 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

86. If IP routing is enabled, which two commands set the gateway of last resort to the default gateway? (Choose two.) A. ip 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

87. 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

88. Which command is used to debug a ping command? A. debug icmp B. debug ip icmp C. debug tcp D. debug packet

. Which command displaysCPU utilization? A. show protocols B. show process C. show system D. show version

90. 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