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Testinexam最新CCNA题库（PDF），356道题目下载。由于题太多，只复制了15道题由朋友们欣赏，需要的朋友自己下载。

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1. Refer to the exhibit. What could be possible causes for the "Serial0/0 is down" interface status?
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(Choose two.)
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2.

A. A Layer 1 problem exists.

B. The bandwidth is set too low.

C. A protocol mismatch exists.
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D. An incorrect cable is being used.
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E. There is an incorrect IP address on the Serial 0/0 interface.

Answer: AD
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2. Before installing a new, upgraded version of the IOS, what should be checked on the router, and which
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command should be used to gather this information? (Choose two.)
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A. the amount of available ROM
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B. the amount of available flash and RAM memory
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C. the version of the bootstrap software present on the router
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D. show version
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E. show processes
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F. show running-config

Answer: BD

3. Refer to the exhibit. After HostA pings HostB, which entry will be in the ARP cache of HostA to support

this transmission?
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Answer: D
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4. Refer to the exhibit. Which two statements are true about interVLAN routing in the topology that is
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shown in the exhibit? (Choose two.)
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A. Host E and host F use the same IP gateway address.
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B. Router1 and Switch2 should be connected via a crossover cable.
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C. Router1 will not play a role in communications between host A and host D.

D. The FastEthernet 0/0 interface on Router1 must be configured with subinterfaces.

E. Router1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit.

F. The FastEthernet 0/0 interface on Router1 and Switch2 trunk ports must be configured using the same

encapsulation type.

Answer: DF

5. Refer to the exhibit. Which two statements are true about the loopback address that is configured on
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RouterB? (Choose two.)
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A. It ensures that data will be forwarded by RouterB.
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B. It provides stability for the OSPF process on RouterB.
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C. It specifies that the router ID for RouterB should be 10.0.0.1.

D. It decreases the metric for routes that are advertised from RouterB.

E. It indicates that RouterB should be elected the DR for the LAN.

Answer: BC
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6. A network administrator is explaining VTP configuration to a new technician. What should the network
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administrator tell the new technician about VTP configuration? (Choose three.)
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A. A switch in the VTP client mode cannot update its local VLAN database.

B. A trunk link must be configured between the switches to forward VTP updates.

C. A switch in the VTP server mode can update a switch in the VTP transparent mode.
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D. A switch in the VTP transparent mode will forward updates that it receives to other switches.
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E. A switch in the VTP server mode only updates switches in the VTP client mode that have a higher VTP

revision number.

F. A switch in the VTP server mode will update switches in the VTP client mode regardless of the

configured VTP domain membership.
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Answer: ABD

7. Which two locations can be configured as a source for the IOS image in the boot system command?

(Choose two.)

A. RAM
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B. NVRAM

C. flash memory

D. HTTP server
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E. TFTP server

F. Telnet server
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Answer: CE
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8. What are two reasons a network administrator would use CDP? (Choose two.)

A. to verify the type of cable interconnecting two devices
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B. to determine the status of network services on a remote device
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C. to obtain VLAN information from directly connected switches
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D. to verify Layer 2 connectivity between two devices when Layer 3 fails

E. to obtain the IP address of a connected device in order to telnet to the device
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F. to determine the status of the routing protocols between directly connected routers

Answer: DE

9. Refer to the exhibit. Both switches are using a default configuration. Which two destination addresses

will host 4 use to send data to host 1? (Choose two.)

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A. the IP address of host 1

B. the IP address of host 4

C. the MAC address of host 1
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D. the MAC address of host 4

E. the MAC address of the Fa0/0 interface of the R1 router
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F. the MAC address of the Fa0/1 interface of the R1 router
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Answer: AF
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10. Refer to the exhibit. The router has been configured with these commands:

hostname Gateway
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interface FastEthernet 0/0

ip address

198.133.219.14 255.255.255.248
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no shutdown
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interface FastEthernet 0/1
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ip address 192.168.10.254 255.255.255.0
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no shutdown

interface Serial 0/0
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ip address 64.100.0.2 255.255.255.252
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no shutdown

ip route 0.0.0.0 0.0.0.0 64.100.0.1

What are the two results of this configuration? (Choose two.)
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A. The default route should have a next hop address of 64.100.0.3.
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B. Hosts on the LAN that is connected to FastEthernet 0/1 are using public IP addressing.
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C. The address of the subnet segment with the WWW server will support seven more servers.
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D. The addressing scheme allows users on the Internet to access the WWW server.
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E. Hosts on the LAN that is connected to FastEthernet 0/1 will not be able to access the Internet without

address translation.
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Answer: DE

11. A company is installing IP phones. The phones and office computers connect to the same device. To
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ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is

on a different network from that of the office computer data traffic. What is the best network device to
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which to directly connect the phones and computers, and what technology should be implemented on this
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device? (Choose two.)
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A. hub
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B. router

C. switch
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D. STP
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E. subinterfaces

F. VLAN

Answer: CF
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12. What are two benefits of using VTP in a switching environment? (Choose two.)
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A. It allows switches to read frame tags.
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B. It allows ports to be assigned to VLANs automatically.
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C. It maintains VLAN consistency across a switched network.
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D. It allows frames from multiple VLANs to use a single interface.
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E. It allows VLAN information to be automatically propagated throughout the switching environment.
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Answer: CE

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13. Which two statements are true about the command ip route 172.16.3.0 255.255.255.0 192.168.2.4?
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(Choose two.)

A. It establishes a static route to the 172.16.3.0 network.

B. It establishes a static route to the 192.168.2.0 network.
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C. It configures the router to send any traffic for an unknown destination to the 172.16.3.0 network.
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D. It configures the router to send any traffic for an unknown destination out the interface with the address
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192.168.2.4.

E. It uses the default administrative distance.
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F. It is a route that would be used last if other routes to the same destination exist.
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Answer: AE
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14. What are two advantages of Layer 2 Ethernet switches over hubs? (Choose two.)
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A. decreasing the number of collision domains

B. filtering frames based on MAC addresses

C. allowing simultaneous frame transmissions

D. increasing the size of broadcast domains

E. increasing the maximum length of UTP cabling between devices

Answer: BC

15. Refer to the exhibit. A network associate needs to configure the switches and router in the graphic so

that the hosts in VLAN3 and VLAN4 can communicate with the enterprise server in VLAN2. Which two

Ethernet segments would need to be configured as trunk links? (Choose two.)
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A. A

B. B

C. C

D. D
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E. E

F. F

Answer: CF
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