You are responsible for increasing the security within the Company LAN. Of the following choices listed below，
which is true regarding layer 2 security and mitigation techniques？ （）
A. Enable root guard to mitigate ARP address spoofing attacks.
B. Configure DHCP spoofing to mitigate ARP address spoofing attacks.
C. Configure PVLANs to mitigate MAC address flooding attacks.
D. Enable root guard to mitigate DHCP spoofing attacks.
E. Configure dynamic APR inspection （DAI） to mitigate IP address spoofing on DHCP untrusted ports.
F. Configure port security to mitigate MAC address flooding
G. None of the other alternatives apply
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Refer to the exhibit. An attacker is connected to interface Fa0/11 on switch A-SW2 and attempts to establish a DHCP server for a man-in-middle attack.
Which recommendation， if followed， would mitigate this type of attack？（）
A. All switch ports in the Building Access block should be configured as DHCP untrusted ports.
B. All switch ports in the Building Access block should be configured as DHCP trusted ports.
C. All switch ports connecting to servers in the Server Farm block should be configured as DHCP untrusted ports.
D. All switch ports connecting to hosts in the Building Access block should be configured as DHCP trusted ports.
E. All switch ports in the Server Farm block should be configured as DHCP untrusted ports.
F. All switch ports connecting to hosts in the Building Access block should be configured as DHCP untrusted ports.
Refer to the exhibit. On the basis of the output generated by the show commands，
which two statements are true？（）
A. Because it is configured as a trunk interface， interface gigabitethernet 0/1 does not appear in the show vlan output.
B. VLAN 1 will not be encapsulated with an 802.1q header.
C. There are no native VLANs configured on the trunk.
D. VLAN 2 will not be encapsulated with an 802.1q header.
E. All interfaces on the switch have been configured as access ports.
F. Because it has not been assigned to any VLAN， interface gigabitethernet 0/1 does not appear in the show vlan output.
Refer to the exhibit. Based upon the output of show vlan on switch CAT2，
what can we conclude about interfaces Fa0/13 and Fa0/14？ （）
A. that interfaces Fa0/13 and Fa0/14 are in VLAN 1
B. that interfaces Fa0/13 and Fa0/14 are down
C. that interfaces Fa0/13 and Fa0/14 are trunk interfaces
D. that interfaces Fa0/13 and Fa0/14have a domain mismatch with another switch
E. that interfaces Fa0/13 and Fa0/14have a duplex mismatch with another switch
Refer to the exhibit. Switch P1S1 is not applying VLAN updates from switch P2S1.
What are three reasons why this is not occurring？（）
A. Switch P2S1 is in server mode.
B. Switch P1S1 is in transparent mode.
C. The MD5 digests do not match.
D. The passwords do not match.
E. The VTP domains are different.
F. VTP trap generation is disabled on both switches.
Refer to the show interface Gi0/1 switchport command output shown in the exhibit.
Which two statements are true about this interface？（）
A. This interface is a member of a voice VLAN.
B. This interface is configured for access mode.
C. This interface is a dot1q trunk passing all configured VLANs.
D. This interface is a member of VLAN7.
E. This interface is a member of VLAN1.
最新試題
What two things will occur when an edge port receives a BPDU？（）
Refer to the exhibit. The command switchport mode access is issued on interface FastEthernet0/13 on switch CAT1. What will be the result？（）
If G1/0/1 on DS1 is shutdown， what will be the current priority value of the Vlan105’s group on DS1 ？（）
Examine the diagram. A network administrator has recently installed the above switched network using 3550s and would like to control the selection of the root bridge.Which switch should theadministrator configure as the root bridge and which configuration command must theadministrator enter to accomplish this？（）
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. 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？（）
Which three statements are true of the Link Aggregation Control Protocol （LACP）？（）
Refer to the exhibit. Which statement is true about the output？（）
Refer to the exhibit. Based on the output of the show spanning-tree command， which statement is true？ （）
DS2 has not become the active device for Vlan103’s HSRP group even though all interfaces are active. As related to Vlan103’s HSRP group. What can be done to make the group function properly ？ （）