Refer to the exhibit.
How will interface FastEthernnet0/1 respond when an 802.1x-enabled client connects to the port？ （）
A. The switch will uniquely authorize the client by using the client MAC address.
B. The switch will cause the port to remain in the unauthorized state， ignoring all attempts by the client to authenticate.
C. The switch port will disable 802.1x port-based authentication and cause the port to transition to the authorized state without any further authentication exchange.
D. The switch port will enable 802.1x port-based authentication and begin relaying authentication messages between the client and the authentication server.
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An attacker is launching a DoS attack on the Company network using a hacking tool designed to exhaust the IP address space available from the DHCP servers for a period of time.
Which procedure would best defend against this type of attack？ （）
A. Configure only trusted interfaces with root guard.
B. Implement private VLANs （PVLANs） to carry only user traffic.
C. Implement private VLANs （PVLANs） to carry only DHCP traffic.
D. Configure only untrusted interfaces with root guard.
E. Configure DHCP spoofing on all ports that connect untrusted clients.
F. Configure DHCP snooping only on ports that connect trusted DHCP servers.
G. None of the other alternatives apply
The Company is concerned about Layer 2 security threats.
Which statement is true about these threats？ （）
A. MAC spoofing attacks allow an attacking device to receive frames intended for a different network host.
B. Port scanners are the most effective defense against dynamic ARP inspection.
C. MAC spoofing, in conjunction with ARP snooping, is the most effective counter-measure against reconnaissance attacks that use dynamic ARP inspection (DAI) to determine vulnerable attack points.
D. Dynamic ARP inspection in conjunction with ARP spoofing can be used to counter DHCP snooping attacks.
E. DHCP snooping sends unauthorized replies to DHCP queries.
F. ARP spoofing can be used to redirect traffic to counter dynamic ARP inspection.
G. None of the other alternatives apply.
Refer to the exhibit. Port security has been configured on the switch port Fa0/5.
What would happen if another device is connected to the port after the maximum number of devices has been reached， even if one or more of the original MAC addresses are inactive？（）
A. The port will permit the new MAC address because one or more of the original MAC addresses are inactive.
B. The port will permit the new MAC address because one or more of the original MAC addresses will age out.
C. Because the new MAC address is not configured on the port， the port will not permit the new MAC address.
D. Although one or more of the original MAC addresses are inactive， the port will not permit the new MAC address.
Refer to the exhibit.
What is the problem with this configuration？（）
A. Spanning tree PortFast cannot be configured on a port where a voice VLAN is configured.
B. Sticky secure MAC addresses cannot be used on a port when a voice VLAN is configured.
C. Spanning tree PortFast cannot be configured on a port when a sticky secure MAC address is used.
D. The switch port must be configured as a trunk.
You need to configure port security on switch R1.
Which two statements are true about this technology？ （）
A. Port security can be configured for ports supporting VoIP.
B. With port security configured， four MAC addresses are allowed by default.
C. The network administrator must manually enter the MAC address for each device in order for the switch to allow connectivity.
D. Withsecurity configured， only one MAC addresses is allowed by default.
E. Port security cannot be configured for ports supporting VoIP.
Refer to the exhibit. Based on the running configuration that is shown for interface FastEthernet0/2，
what two conclusions can be deduced？（）
A. Connecting a host with MAC address 0000.0000.4147 will move interface FastEthernet0/2 into error disabled state.
B. The host with address 0000.0000.4141 is removed from the secure address list after 5 seconds of inactivity.
C. The sticky secure MAC addresses are treated as static secure MAC addresses after the running configuration is saved to the startup configuration and the switch is restarted.
D. Interface FastEthernet0/2 is a voice VLAN port.
E. The host with address 0000.0000.000b is removed from the secure address list after 300 seconds.
Refer to the exhibit.
Which interface or interfaces on switch SW_A can have the port security feature enabled？（）
A. Ports 0/1 and 0/2
B. The trunk port 0/22 and the EtherChannel ports
C. Ports 0/1， 0/2 and 0/3
D. Ports 0/1， 0/2， 0/3， the trunk port 0/22 and the EtherChannel ports
E. Port 0/1
F. Ports 0/1， 0/2， 0/3 and the trunk port 0/22
A Company switch was configured as shown below：
switchport mode access switchport port-security
switchport port-security maximum 2
switchport port-security mac-address 0002.0002.0002
switchport port-security violation shutdown
Given the configuration output shown above，
what happens when a host with the MAC address of 0003.0003.0003 is directly connected to the switch port？ （）
A. The host will be allowed to connect.
B. The port will shut down.
C. The host can only connect through a hub/switch where 0002.0002.0002 is already connected.
D. The host will be refused access.
E. None of the other alternatives apply
VLAN maps have been configured on switch R1.
Which of the following actions are taken in a VLAN map that does not contain a match clause？ （）
A. Implicit deny feature at end of list.
B. Implicit deny feature at start of list.
C. Implicit forward feature at end of list
D. Implicit forward feature at start of list.
Refer to the exhibit. The web servers WS_1 and WS_2 need to be accessed by external and internal users. For security reasons， the servers should not communicate with each other，
although they are located on the same subnet. The servers do need， however， to communicate with a database server located in the inside network.
What configuration will isolate the servers from each other？ （）
A. The switch ports 3/1 and 3/2 will be defined as secondary VLAN community ports. The ports connecting to the two firewalls will be defined as primary VLAN promiscuous ports.
B. The switch ports 3/1 and 3/2 and the ports connecting to the two firewalls will be defined as primary VLAN promiscuous ports.
C. The switch ports 3/1 and 3/2 and the ports connecting to the two firewalls will be defined as primary VLAN community ports.
D. The switch ports 3/1 and 3/2 will be defined as secondary VLAN isolated ports. The ports connecting to the two firewalls will be defined as primary VLAN promiscuous ports.
最新试题
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 ？ （）
Which two statements are true when the extended system ID feature is enabled？ （）
Which three statements are true of the Link Aggregation Control Protocol （LACP）？（）
Refer to the exhibit. The command switchport mode access is issued on interface FastEthernet0/13 on switch CAT1. What will be the result？（）
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？（）
Which statement is correct about RSTP port roles？（）
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. Based on the output of the show spanning-tree command， which statement is true？ （）
During routine maintenance， G1/0/1 on DS1 was shutdown. All other interface were up. DS2 became the active HSRP device for Vlan101 as desired. However， after G1/0/1 on DS1 was reactivated. DS1 did not become the active HSRP device as desired. What need to be done to make the group for Vlan101 function properly ？ （）