You want to enhance the security within the LAN and prevent VLAN hopping.
What two steps can be taken to help prevent this？（）
A.Enable BPD guard
B.Disable CDP on ports where it is not necessary
C.Place unused ports in a common unrouted VLAN
D.Prevent automatic trunk configuration
E.Implement port security
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The network administrator has enabled BPDU guard on the LAN.
Why is an effective way to prevent an unauthorized rogue switch from altering the spanning-tree topology of this network？ （）
A.BPDU guard can be used to prevent invalid BPDUs from propagating throughout the network.
B.BPDU guard can guarantee proper selection of the root bridge.
C.BPDU guard can be utilized to prevent the switch from transmitteing BPDUs and incorrectly altering the root bridge election.
D.BPDU guard can be utilized along with PortFast to shut down ports when a switch is connected to the port.
E.None of the other alternatives apply
Refer to the exhibit.
What is the sequence of events when a VoIP call is placed from IP phone P1 to IP phone P2？ （）
A.RTP traffic is exchanged between IP phone P1 and IP phone P2. IP phone P1 alerts the CCM of off-hook state. CCM instructs IP phone P1 to provide dialtone. IP phone P1 passes digits to CCM. CCM routes call to PSTN or IP phone P2.
B.CCM instructs IP phone P1 to provide dialtone. IP phone P1 alerts the CCM of off-hook state. IP phone P1 passes digits to CCM. CCM routes call to PSTN or IP phone P2. RTP traffic is exchanged between IP phone P1 and IP phone P2.
C.CCM instructs IP phone P1 to provide dialtone.IP phone P1 alerts the CCM of off-hook state. IP phone P1 passes digits to CCM. RTP traffic is exchanged between IP phone P1 and IP phone P2. CCM routes call to PSTN or IP phone P2.
D.IP phone P1 alerts the CCM of off-hook state. CCM instructs IP phone P1 to provide dialtone. IP phone P1 passes digits to CCM. CCM routes call to PSTN or IP phone P2. RTP traffic is exchanged between IP phone P1 and IP phone P2.
Exhibit：
You work as a network administrator at. You study the exhibit carefully. In the wireless LAN all devices are configured with static WEP keys.
What will happen if the access point receives packets sent by the wireless client adapter that are not encrypted with the appropriate key？（）
A.The wireless client adapter will not be authenticated by the authentication server， but the access point deliver the packets to the intended receiver.
B.The wireless client adapter will not be able to send any packets to the access point.
C.The access point will discard the packets and never deliver them to the intended receiver.
D.The wireless client adapter will be authenticated by the authentication server and the access point will deliver the packets to the intended receiver.
Exhibit：
You work as a network technician at. Study the exhibit carefully. You are required configure the static WEP keys on the wireless client adapter using the Cisco ADU （Aironet Desktop Utility）.
What should you have in mind when doing this？（）
A.Before the client adapter WEP key is generated， all wireless infrastructure devices （such as access points， servers， etc.） must be properly configured for LEAP authentication.
B.The client adapter WEP key should be generated by the AP and forwarded to the client adapter efore the client adapter can establish communication with the wireless network.
C.In infrastructure mode the client adapter WEP key must match the WEP key used by the access point. In ad hoc mode all client WEP keys within the wireless network must match each other.
D.The client adapter WEP key should be generated by the authentication server and forwarded to the client adapter before the client adapter can establish communication with the wireless network.
E.None of the other alternatives apply
A.to provide access to proprietary Cisco IOS software code in order to expand the number of vendors writing wireless code
B.to provide Cisco engineers with the opportunity to certify that any wireless devices that are made by third parties are compatible with Cisco wireless products
C.to provide customers with a broad range of WLAN client devices that have been tested for interoperability with Cisco Aironet innovations
D.to provide third parties with Cisco hardware in order to encourage the development of radical innovation in the area of wireless
最新試題
Which three statements about STP timers are true？（）
Refer to the exhibit. Switch 15 is configured as the root switch for VLAN 10 but not for VLAN 20. If the STP configuration is correct， what will be true about Switch 15？（）
Refer to the exhibit. On the basis of the output of the show spanning-tree inconsistentports command， which statement about interfaces FastEthernet 0/1 and FastEthernet 0/2 is true？（）
Refer to the exhibit. Based on the output of the show spanning-tree command， which statement is true？ （）
How are STP timers and state transitions affected when a topology change occurs in an STP environment？（）
Refer to the exhibit. For what purpose is the command show ip cef used？（）
Refer to the exhibit. Switch S2 contains the default configuration. Switches S1 and S3 both have had the command spanning-tree mode rapid-pvst issued on them. What will be the result？（）
Which two statements about the various implementations of STP are true？（）
During routine maintenance， it became necessary to shutdown G1/0/1 on DS1 and DS2. All other interface were up. During this time， DS1 became the active device for Vlan104’s HSRP group. As related to Vlan104’s HSRP group. What can be done to make the group function properly ？ （）
Refer to the exhibit. The command switchport mode access is issued on interface FastEthernet0/13 on switch CAT1. What will be the result？（）