The network is being flooded with invalid Layer 2 addresses， causing switch CAM tables to befilled and forcing unicast traffic to be transmitted out all switch ports. Which type of Layer 2 attackis being used here？（）

多项选择题YouwanttoenhancethesecuritywithintheLANandpreventVLANhopping.Whattwostepscanbetakentohelppreventthis？（）

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

单项选择题Refer to the exhibit. Based upon the configuration， you need to understand why the policy routingmatch counts are not increasing. Which would be the first logical step to take？Select the bestresponse.（）

A.Confirm if there are other problematic route-map statements thatprecede divert
B.Check the access list for log hits
C.Check the routing table for 212.50.185.126
D.Remove any two of the set clauses（Multiple set clause entries will cause PBR to use therouting table.）

单项选择题Study the following graphic carefully Host1 and Host2， which belong to different VLANs， are in thesame subnet. According to the information displayed， which description is correct when trying toping from host to host？（）

A.A trunk port should be configured on the link between CK-SW1 and CK-SW2 to pingsuccessfully
B.The two hosts should be in the same VLAN in order to ping successfully
C.A Layer 3 device is a must in order for the ping command to be successful
D.The ping command will be successful without any further configuration changes

单项选择题Refer to the exhibit. VLAN2， VLAN3， and VLAN10 are configured on the switch D-SW1.Host computers are on VLAN 2 （10.1.2.0）， servers are on VLAN 3 （10.1.3.0）， and the management VLAN is on VLAN10 （10.1.10.0）. Hosts are able to ping each other but are unable toreach the servers. On the basis of the exhibited output， which configuration solution could rectifythe problem？（）

A.Enable IP routing on the switch D-SW1
B.Configure a default route that points toward network 200.1.1.0/24
C.Assign an IP address of 10.1.3.1/24 to VLAN3
D.Configure default gateways to IP address 10.1.2.1 on each host
E.Configure default gateways to IP address 10.1.10.1 on each host
F.Configure default gateways to IP address 200.1.1.2 on each host

单项选择题Refer to the exhibit. Host A and Host B are connected to the Catalyst 3550 switch and have beenassigned to their respective VLANs. The rest of the 3550 configuration is the default configuration.Host A is able to ping its default gateway， 10.10.10.1， but is unable to ping Host B. Given theoutput displayed in the exhibit， which statement is true？（）

A.HSRP must be configured on SW1
B.A separate router is required to support interVLAN routing
C.Interface VLAN 10 must be configured on the SW1 switch
D.The global config command ip routing must be configured on the SW1 switch
E.VLANs 10 and 15 must be created in the VLAN database mode
F.VTP must be configured to support interVLAN routing