CCNA 基础练习题(2)

81.You work as network administrator at TestKing Ltd. TestKing has three different sites with one router
at each site. The routers are named TestKing1, TestKing2, and TestKing3. An assistant technician has
configured all the routers, but no connectivity exists between the routers. You task is to identify all
error(s) and make the necessary adjustment(s) to establish network connectivity.
The routers have been configured with the following configuration:
.They are named TestKing1, TestKing2, and TestKing3.
.RIP is the routing protocol
.Clocking is provided on the serial 0 interface.
.The password on each router is “testking“
.The subnet mask on all interfaces is the default subnet mask.
.The IP addresses are listed in the chart below.
To configure the router click on a host icon that is connected to the router by a serial console cable.
TestKing1
E0 192.168.3.1
S0 192.168.5.1
TestKing2
E0 192.168.8.1
S0 192.168.11.1
S1 192.168.5.2
TestKing3
E0 192.168.13.2
S1 192.168.11.2
〈br〉〈button onClick=“window.open(’./picture/test81.jpg’,’Network’,’height=450,width=650,status=no,toolbar=no,menubar=no,location=no,titlebar=no,scrollbars=no,alwaysRaised=1,resizable=yes’)“〉Exhibit〈/button〉〈br〉
〈br〉
Answer:
Click on Host 2:
Router TestKing1:
TestKing1〉 enable
Password: testking
TestKing1 # config terminal
TestKing1 (config) # interface ethernet 0
TestKing1 (config-if) # ip address 192.168.3.1 255.255.255.0
TestKing1 (config-if) # no shutdown
TestKing1 (config-if) # exit
TestKing1 (config) # interface serial 0
TestKing1 (config-if) # ip address 192.168.5.1 255.255.255.0
TestKing1 (config-if) # clock rate 64000
TestKing1 (config-if) # no shutdown
TestKing1 (config-if) # exit
TestKing1 (config) # router rip
TestKing1 (config-router) # network 192.168.3.0
TestKing1 (config-router) # network 192.168.5.0
TestKing1 (config-router) # Ctrl-Z
TestKing1 # copy running-config startup-config
Click on Host 4
Router TestKing2:
TestKing2〉 enable
Password: testking
TestKing2 # config t
TestKing2 (config) # interface ethernet 0
TestKing2 (config-if) # ip address 192.168.8.1 255.255.255.0
TestKing2 (config-if) # no shutdown
TestKing2 (config-if) # exit
TestKing2 (config) # interface serial 0
TestKing2 (config-if) # ip address 192.168.11.1 255.255.255.0
TestKing2 (config-if) # clock rate 64000
TestKing2 (config-if) # no shutdown
TestKing2 (config-if) # exit
TestKing2 (config) # interface serial 1
TestKing2 (config-if) # ip address 192.168.5.2 255.255.255.0
TestKing2 (config-if) # no shutdown
TestKing2 (config-if) # exit
TestKing2 (config) # router rip
TestKing2 (config-router) # network 192.168.8.0
TestKing2 (config-router) # network 192.168.11.0
TestKing2 (config-router) # network 192.168.5.0
TestKing2 (config-router) # Ctrl-Z
TestKing2 # copy running-config startup-config
Router TestKing3:
Click on Host F
TestKing3〉 enable
Password: testking
TestKing3 # config t
TestKing3 (config) # interface ethernet 0
TestKing3 (config-if) # ip address 192.168.13.2 255.255.255.0
TestKing3 (config-if) # no shutdown
TestKing3 (config-if) # exit
TestKing3 (config) # interface serial 1
TestKing3 (config-if) # ip address 192.168.11.2 255.255.255.0
TestKing3 (config-if) # no shutdown
TestKing3 (config-if) # exit
TestKing3 (config) # router rip
TestKing3 (config-router) # network 192.168.13.0
TestKing3 (config-router) # network 192.168.11.0
TestKing3 (config-router) # Ctrl-Z
TestKing3 # copy running-config startup-config

82.What will be the calculated OSPF cost of an OSPF interface that has been configured with the bandwidth 64 command?
A. 1
B. 10
C. 64
D. 1562
E. 64000
F. 128000
Answer: D

83.You are a network technician at TestKing, Inc. A newly appointed trainee wants to know what the
purpose of DLCIs in Frame Relay is.
What would your response be?
A. They determine the encapsulation type employed by the Frame Relay.
B. They identify the logical circuit between a local router and a Frame Relay WAN switch.
C. They represent the physical address of the router.
D. They represent the keepalives in the maintenance of PVC.
Answer: B

84.Which of the following statements is true regarding the command sequence illustrated below? (Choose all
that apply.)
 TestKingA(config)# interface loopback 0
 TestKingA(config-if)# ip address 192.168.16.24 255.255.255.255
A. It creates a virtual, software only, interface.
B. It provides a way to test the convergence of OSPF routing updates.
C. The mask of 255.255.255.255 is called a host mask.
D. It uses a wildcard mask of 255.255.255.255.
E. It ensures that an interface is always active for OSPF processes.
F. These commands can only be issued to configure serial interfaces.
Answer: A, C, E

85.Which IEEE standards apply when a company wants to implement 1000mbps Ethernet? (Select two
options)?
A. 802.3u
B. 802.3ae
C. 802.3ab
D. 802.3e
E. 802.3z
F. 802.3i
Answer: C, E

86.Which of the statements mentioned below describes the OSPF routing protocol? (Choose all that apply.)
A. It confines network instability to a single area of network.
B. It increases the routing overhead of the network
C. It supports VLSM
D. It routes between Autonomous Systems.
E. It allows extensive control of routing update
Answer: A, C, E

87.Which field of frame id used by error detection schemes when checking on errors?
A. MTU
B. PDU
C. FCS
D. Flag
E. MAC
F. BRI
Answer: C

88.What are the options for Frame LMI types. (Choose all that apply.)
A. Q.931
B. IEEE
C. Cisco
D. IETF
E. Q933a
F. ANSI
Answer: C, E, F

89.Which of the following addresses can be assigned to network hosts when given a subnet mask of
255.255.255.224? (Select three options.)
A. 201.45.116.159
B. 134.178.18.62
C. 192.168.16.91
D. 92.11.178.93
E. 217.63.12. 24
F. 15.234.118.63
Answer: B, C, D

90.Which of the following commands will provide you with information regarding the Layer 3 configuration
of directly connected router interfaces?
A. show ip links
B. show cdp neighbors
C. show cdp neighbors detail
D. show ip clients
E. show ip route
Answer: C

91.You are the network administrator at TestKing Inc. The TestKing network is shown in the following
exhibit:
〈br〉〈button onClick=“window.open(’./picture/test91.jpg’,’Network’,’height=450,width=650,status=no,toolbar=no,menubar=no,location=no,titlebar=no,scrollbars=no,alwaysRaised=1,resizable=yes’)“〉Exhibit〈/button〉〈br〉
〈br〉
Hosts in the TestKing sales department cannot get access to a new server at the Branch Office. Consider
the IP addressing scheme in the exhibit to determine the problem.
A. The default gateway in the sales department is inaccurate.
B. The serial 0 interface on the Main Office router and the serial 1 interface on the Branch Office router are
not compatible.
C. The subnet mask of the workstations in the sales department is inaccurate.
D. The host address of the server at the Branch Office is invalid.
E. The default gateway of the server at the Branch Office is inaccurate.
Answer: D

92.You are a network technician at TestKing, Inc. TestKing has a Class B network with a subnet mask of
255.255.255.0.
Which of the following statements is true regarding this network? (Choose all that apply.)
A. There are 254 usable subnets.
B. There are 256 usable hosts per subnet.
C. There are 50 usable subnets.
D. There are 254 usable hosts per subnet.
E. There are 24 usable hosts per subnet.
F. There is one usable network.
Answer: A, D

93.You are a network technician at TestKing, Inc. You have been asked to set up Frame Relay for point-topoint
subinterfaces.
Which of the following should not be configured?
A. The local DLCI on each subinterface of the Frame Relay.
B. The Frame Relay encapsulation on the physical interface.
C. An IP address on the physical interface.
D. The subinterface only.
Answer: C

94.The following access list was applied outbound on the E0 interface connected to the 192.168.1.8/29 LAN: access-list 123 deny tcp 192.168.1.8 0.0.0.7 eq 20 any
access-list 123 deny tcp 192.168.1.8 0.0.0.7 eq 21 any
What effect will this particular access list have on traffic?
A. FTP traffic from 192.168.1.22 will be denied.
B. No traffic, except for FTP traffic will be allowed to exit E0.
C. FTP traffic from 192.168.1.9 to any host will be denied.
D. All traffic exiting E0 will be denied.
E. All FTP traffic to network 192.168.1.9/29 will be denied.
Answer: D

95.You are a network technician at TestKing, Inc. Your trainee wants to know which command is used to
display the placement and direction of an IP access control list on a router.
What would your response be??
A. show interface list
B. show ip route
C. show ip interface
D. show ip interface brief
E. show interface
Answer: C

96.You are a network technician at TestKing, Inc.