1-50.txt

用jsp编的一个网络程序

1. The accompanying graphic shows an extended IP access-list configuration.
Router#show access-list
Extended IP access list 105
deny tcp any 172.30.24.64 0. 0. 0.63 eq smtp
deny tcp any any eq telnet
Router#show ip interface eo
Etherneto is up, line protoco1 is up
Internet address is 172.18.9.60/24
Broadcast address is 255.255.255.255
Address determined by setup command
Mtu is 1500 bytes
Helper address is not set
Directed broadcast forwarding is enabled
Outgoing access list is 105
Inbound access list is not set
Proxy arp is enabled
Security level is default
Split horizon is enabled
_________________________________________
Rest of configuration omitted
_________________________________________
What is the result of applying the access-list to Ethernet 0?
A. Only e-mail and telnet access will be permitted out of Ethernet 0.
B. All hosts on the 172.30.24.64 network will be permitted e-mail and telnet access.
C. All TCP protocols will be permitted out of Ethernet 0 except e-mail and telnet.
D. All IP traffic out of Ethernet 0 will be denied.
E. The access-list is numbered incorrectly and will fail.

Answer: D

2. Which of the following commands applies an access control list to a router interface?
A. permit access-list 101 out
B. ip access-group 101 out
C. apply access-list 101 out
D. access-class 101 out
E. ip access-list e0 out

Answer: B

3. Which command is used to display the placement and direction of an IP access control list on a
router?
A. show access-list
B. show ip route 1
C. show ip interface
D. show interface
E. show interface list
F. show ip interface brief

Answer: C

4. Which command displays the configuration register setting?
A. show register
B. show flash
C. show boot
D. show version

Answer: D

5. Which command successfully pings an individual IP address?
A. Router> ping 192.5.5.0
B. Router# ping 192.5.5.30
C. Router> ping 192.5.5.256
D. Router# ping 192.5.5.255

Answer: B

6. Which command will provide you with information regarding the Layer 3 configuration of directly
connected router interfaces?
A. show ip interface
B. show cdp neighbors
C. show cdp neighbors detail
D. show ip route
E. show ip link status
F. telnet

Answer: C

7. Which command loads a new version of the Cisco IOS into a router?
A. copy flash ftp
B. copy ftp flash
C. copy flash tftp
D. copy tftp flash

Answer: D

8. You are the network administrator of the Tasti-Treats Cereal Company. You receive a call from a user
who is unable to reach a server at a remote site. After further review, you discover the following
information:
local PC – 10.0.3.35/24
default gateway – 10.0.3.1
remote server – 10.0.5.250/24
You then conduct the following tests from the offending local PC:
ping 127.0.0.1 – successful
ping 10.0.3.35 – successful
ping 10.0.3.1 – successful
ping 10.0.5.250 – unsuccessful
Which of the following problems would create the test results listed above?
A. TCP/IP not correctly installed
B. local physical layer problem
C. local NIC not functioning.
D. Remote physical layer problem

Answer: D

9. RouterA(config)#router igrp 100
RouterA(config-router)#network 192.168.3.0
RouterA(config-router)#network 192.168.4.0
RouterA(config-router)#network 192.168.5.0
RouterA(config-router)#network 172.16.0.0
RouterB(config)#router igrp 101
RouterB(config-router)#network 192.168.3.0
RouterB(config-router)#network 192.168.6.0
RouterB(config-router)#network 192.168.7.0
Given the router configurations shown, which networks will be found in RouterB’s routing table,
assuming a properly configured network?
A. 192.168.3.0
192.168.4.0
192.168.5.0
192.168.6.0
192.168.7.0
172.16.0.0
B. 192.168.3.0
192.168.6.0
192.168.7.0
C. 192.168.3.0
192.168.4.0
192.168.5.0
192.168.6.0
192.168.7.0
D. 172.16.0.0
E. 192.168.3.0
192.168.4.0
192.168.5.0

Answer: B

10. Your Ethernet network, 172.30.1.0, shuts down. Which update message is seen in your router’s
debug ip rip output regarding that network?
A. subnet 172.30.1.0, metric 0
B. subnet 172.30.1.0, metric 1
C. subnet 172.30.1.0, metric 15
D. subnet 172.30.1.0, metric 16

Answer: D

11. Which of the following protocols utilizes features of both distance-vector and link-state routing?
A. RIP
B. OSPF
C. EIGRP
D. IGRP

Answer: C

12. You telnet to a host on a remote network. Which MAC address will be present in the ARP table
when you issue the show arp command?
A. MAC address of the destination host Ethernet port
B. MAC address of the local router Ethernet port
C. MAC address of the destination router Serial port
D. MAC address of the local router Serial port

Answer: B

13. Which parameter must be supplied when initializing the IGRP routing process?
A. connected network numbers
B. IP address mask
C. metric weights
D. autonomous system number
E. registered administrative id

Answer: D

14. A routing table contains static, RIP, and IGRP routes for the same destination network. Which
route would normally be used to forward data?
A. The IGRP route
B. The static route
C. The RIP route
D. All three will load balance

Answer: B

15. Which method does a Cisco Catalyst switch use to identify the VLAN membership of a frame over
trunked links?
A. Frame filtering with VLAN ID
B. Frame tagging with VLAN ID
C. Frame tagging with trunk ID
D. Frame filtering with trunk ID
E. Frame filtering with VTP port ID

Answer: B

16. Given the following routing table entry, which of the following are used by default in calculation of
the number 1200?(Choose 2)
172.16.0.0[100/1200]via 192.168.16.3, 00:00:55, Ethernet 1
A. MTU
B. Bandwidth
C. Administrative distance
D. Hop count
E. Metric
F. Delay

Answer: B F

17. Which route will not be entered into the routing table of the receiving router?
Router_B#show ip route
Codes:C-connected,s-static,I-IGRP,R-RIP,M-mobile,B-BGP,D-EIGRP,EX-EIGRP external,
O-OSPF,IA-OSPF inter area,EI-OSPF external type1,E2-OSPF external
type2,E-EGP,
I-IS_IS,L1-IS_IS LeveL-1,L2-IS_IS Level-2,*-candidate default,U-per-user static
route
Gateway of last resort is not set
R 192.168.8.0/24[120/1] via 192.168.2.2, 00:00:10, Serial 0
C 192.168.9.0/24 is directly connected,Serial 1
R 192.168.10.0/24[120/7] via 192.168.9.1, 00:00:02, Serial 1
R 192.168.11.0/24[120/7] via 192.168.9.1, 00:00:03, Serial 1
C 192.168.1.0/24 is directly connected,Ethernet 0
C 192.168.2.0/24 is directly connected,Serial 0
R 192.168.3.0/24[120/1] via 192.168.2.2, 00:00:10, Serial 0
R 192.168.4.0/24[120/15] via 192.168.2.2, 00:00:10, Serial 0
R 192.168.5.0/24[120/15] via 192.168.2.2, 00:00:10, Serial 0
R 192.168.6.0/24[120/15] via 192.168.2.2, 00:00:10, Serial 0
R 192.168.7.0/24[120/1] via 192.168.2.2, 00:00:10, Serial 0
A. R 192.168.8.0/24[120/1]via 192.168.2.2,00:00:10,Serial 0
B. R 192.168.11.0/24[120/7]via 192.168.9.1,00:00:03,Serial 1
C. C 192.168.1.0/24[120/7] is directly connected, Ethernet0
D. R 192.168.5.0/24[120/15]via 192.168.2.2,00:00:10,Serial 0

Answer : D

18. Given the network 199.141.27.0 with a subnet mask of 255.255.255.240, identify the valid host
addresses.( Choose three.)
A. 199.141.27.33
B. 199.141.27.112
C. 199.141.27.119
D. 199.141.27.126
E. 199.141.27.175
F. 199.141.27.208

Answer: A C D

19. Users on network 192.168.69.0/28 are complaining that they can not access the corporate intranet
server at www.inhouse.com. In troubleshooting this problem, you find that you are able to telnet from a
workstation on this network to the internal webserver via its IP address. What is the most likely cause of
this problem?
A. TCP/IP failure
B. DNS failure
C. FTP failure
D. SNMP failure

Answer: B

20. IPX traffic using different encapsulation type can go over the same data link
A. true
B. false

Answer: A

21. ICMP(reffered to in RFC 1700) is implemented by all TCP/IP hosts
A. true
B. false

Answer: A

22. Calculate the number of usable networks and usable hosts for the network 210.106.14.0/24.
A. 1 network with 254 hosts
B. 2 networks with 128 hosts
C. 4 networks with 64 hosts
D. 6 networks with 30 hosts

Answer: A

23. If window size is changed from 3000 to 4000 during the data transfer stage of a TCP session, what
can a sending host do?
A. Transmit 3000 bytes before waiting for an acknowledgement.
B. Transmit 4000 packets before waiting for an acknowledgement.
C. Transmit 4000 bytes before waiting for an acknowledgement
D. Transmit 4000 segments before waiting for an acknowledgement.
E. Transmit 3000 frames before waiting for an acknowledgement
F. Transmit 3000 packets before waiting for an acknowledgement

Answer: C


24. Which command displays all routed protocols and the interfaces on which the protocol is enabled?
A. show protocols
B. show protocol brief
C. show interfaces protocol
D. show interfaces
E. show routed
F. show routed interfaces

Answer: D

25. Which of the following are true concerning distance vector and link state routing protocols? (Choose
two.)