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Cisco CCNA 640-802试题(76-80)

2007-12-24 11:17 佚名 51CTO.com 字号:T | T
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本文内容为Cisco CCNA认证考试640-802(76-80)试题及答案。

AD:

76. What is the purpose of the command shown below?
vtp password Fl0r1da
A. It is used to validate the sources of VTP advertisements sent between switches.
B. It is used to access the VTP server to make changes to the VTP configuration.
C. It allows two VTP servers to exist in the same domain, each configured with different passwords.
D. It is the password required when promoting a switch from VTP client mode to VTP server mode.
E. It is used to prevent a switch newly added to the network from sending incorrect VLAN information to the
other switches in the domain.

Answer: A

77. A network administrator is configuring the routers in the graphic for OSPF. The OSPF process has been started and the networks have been configured for Area 0 as shown in the diagram. The network administrator has several options for configuring RouterB to ensure that it will be preferred as the designated router (DR) for the 172.16.1.0 /24 LAN segment. What configuration tasks could be used to establish this preference? (Choose three.)

A. Configure the priority value of the Fa0/0 interface of RouterB to a higher value than any other interface on the
Ethernet network.
B. Change the router id of Router B by assigning the IP address 172.16.1.130/24 to the Fa0/0 interface of
RouterB.
C. Configure a loopback interface on RouterB with an IP address higher than any IP address on the other routers.
D. Change the priority value of the Fa0/0 interface of RouterB to zero.
E. Change the priority values of the Fa0/0 interfaces of RouterA and RouterC to zero.
F. No further configuration is necessary.

Answer: ACE

78. A network administrator needs to force a high-performance switch that is located in the MDF to become the  root bridge for a redundant path switched network. What can be done to ensure that this switch assumes the role as root bridge?

A. Establish a direct link from the switch to all other switches in the network.
B. Assign the switch a higher MAC address than the other switches in the network have.
C. Configure the switch so that it has a lower priority than other switches in the network.
D. Configure the switch for full-duplex operation and configure the other switches for half-duplex operation.
E. Connect the switch directly to the MDF router, which will force the switch to assume the role of root bridge.

Answer: C

79. Refer to the exhibit. Given the output of the Floor3 switch, what statement describes the operation of this switch?

A. VTP is disabled on this switch.
B. The switch can create, change, and delete VLANs.
C. The switch learns VLAN information but does not save it to NVRAM.
D. The switch can create VLANs locally but will not forward this information to other switches.
E. The switch learns VLAN information and updates the local VLAN data base in NVRAM.

Answer: C

80. What is the effect of the following access list condition?
access-list 101 permit ip 10.25.30.0 0.0.0.255 any
A. permit all packets matching the first three octets of the source address to all destinations
B. permit all packets matching the last octet of the destination address and accept all source addresses
C. permit all packets from the third subnet of the network address to all destinations
D. permit all packets matching the host bits in the source address to all destinations
E. permit all packets to destinations matching the first three octets in the destination address

Answer: A

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