思科认证考试(CCNA)考试模拟题60-71及答案
来源:优易学  2011-12-2 18:15:24   【优易学:中国教育考试门户网】   资料下载   IT书店

Questions 
60. [RINx] What condition does Serial 0 down & protocol up represent? 

a) The interface is disconnected but keep alives are being received 
b) The interface is working properly but keep alives are not being received 
c) The interface is bad and should be replaced 
d) The interface is working correctly. 
e) Condition not possible 

61.[CxNx] What command correctly displays the running configuration file? 

a) show configuration 
b) show running-configuration 
c) show active-configuration file 
d) write terminal 
e) all of the above 

62. [RINx] What is the purpose of TTL? 

a) Prevent routing loops 
b) Prevents Timely Telnet Losses 
c) Remind engineers that life is short 
d) To prevent IP datagrams from living long and fruitful lives 
e) To prevent IP datagrams that are caught in a routing loop from traversing the network forever. 

63. [RINx] Which should be the subnet mask for a class C address if 62 hosts are required? 

a) 255.255.255. 192 
b) 255.255.192.0 
c) 0.0.0.192 
d) 255.255.255.62 
e) none of the above 

64. [CxNx] After the configuration command is used, when does it become effective? 

a) immediately 
b) after the router is rebooted 
c) after you exit the configuration mode 
d) depends on the change that is made 
e) All of the above 

65. [RxNx] Which one of the following is true concerning IPX load balancing? 

a) Activated by default 
b) Must be configured 
c) IPX does not load balance 
d) Requires a Novell File Server 
e) None of the above 

66. [BxNx] What is the purpose of spanning tree? 

a) Prevents bridging loops 
b) Prevents routing loops 
c) Cisco supported feature that can be used per VLAN 
d) Can be initiated on any routed interface 
e) All of the above

Questions 67 - 71 refer to the following diagram and information. 

The above figure represents a frame-relay network with PVC’s configured for a hub and spoke design with corresponding DLCI numbers. Assume all connections are with the serial 0 interface. Please refer to the above figure for questions 67-71. 

67. [FINx] Given the following configuration for Router A: 

Router_a(config)#interface s0

Router_a(config-if)#encapsulation 

frame-relay

Router_a(config-if)#frame-relay 

lmi-type ansi

Router_a(config-if)#frame-relay map ip 

172.16.1.2 100

Router_a(config-if)#frame-relay map ip 

172.16.1.3 101

Router_a(config-if)#frame-relay map ip 

172.16.1.4 102

Router_a(config-if)#frame-relay map ip 

172.16.1.5 103

Router_a(config-if)#frame-relay map ip 

172.16.1.6 104

Router_a(config-if)#ip address 

172.16.1.1 255.255.255.0
Which of the following is the proper configuration 
for Router F? 

a) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi
b) 
Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0
c) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 104
d) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 604
e) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.6 604

68. [FINx] Given the following configuration for Router A: 

Router_a(config)#interface s0

Router_a(config-if)#encapsulation 

frame-relay ietf

Router_a(config-if)#frame-relay 

map ip 172.16.1.2 100

Router_a(config-if)#frame-relay 

map ip 172.16.1.3 101

Router_a(config-if)#frame-relay 

map ip 172.16.1.4 102

Router_a(config-if)#frame-relay 

map ip 172.16.1.5 103

Router_a(config-if)#frame-relay 

map ip 172.16.1.6 104

Router_a(config-if)#ip address 

172.16.1.1 255.255.255.0
Which of the following is the proper configuration for Router F? 

a) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi
b) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 104
c) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type cisco

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 104
d) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type cisco

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 604
e) None of the above.

69. [FINx] Given the following configuration for Router A: 

Router_a(config)#interface s0

Router_a(config-if)#encapsulation 

frame-relay ietf

Router_a(config-if)#frame-relay 

lmi-type ansi

Router_a(config-if)#frame-relay 

map ip 172.16.1.2 100

Router_a(config-if)#frame-relay 

map ip 172.16.1.3 101

Router_a(config-if)#frame-relay 

map ip 172.16.1.4 102

Router_a(config-if)#frame-relay 

map ip 172.16.1.5 103

Router_a(config-if)#frame-relay 

map ip 172.16.1.6 104

Router_a(config-if)#ip address 

172.16.1.1 255.255.255.0
Which of the following is the proper configuration for Router F? 

a) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 104 
b) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 104 ietf
c) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 604 
d) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 604 ietf
e) 

Router_f(config)#interface s0

Router_f(config-if)#encapsulation 

frame-relay ietf

Router_f(config-if)#frame-relay 

lmi-type ansi

Router_f(config-if)#ip address 

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay 

map ip 172.16.1.1 104

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