A.It may allocate IP addresses from an unknown subnet to the users.
B.All multicast traffic can be sniffed by using the DHCP multicast capabilities.
C.The CPU utilization of the first hop router can be overloaded by exploiting DHCP relay open ports.
D.A potential man-in-the-middle attack can be used against the clients.
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A. 1） lowest root bridge id，2）lowest sender bridge id，3）lowest port id，4）lowest root path cost
B. 1） lowest root path cost，2）lowest root bridge id，3）lowest sender bridge id，4）lowest sender port id
C. 1） lowest root bridge id，2）lowest sender bridge id，3）lowest root path cost 4）owest sender port id
D. 1） lowest root bridge id，2）lowest root path cost，3）lowest sender bridge id，4）lowest sender port id
A. VTP updates are ignored and forwarded out all ports.
B. VTP updates are ignored and forwarded out trunks only.
C. VTP updates are made to the VLAN database and are forwarded out trunks only.
D. VTP updates are ignored and are not forwarded.
A.Increase the shaping rate for the priority queue.
B.Remove the policer applied on the priority queue.
C.Remove the shaper applied on the priority queue.
D.Increase the policing rate for the priority queue.
A.enforce the placement of the root bridge in the network
B.ensure that a port is transitioned to a forwarding state quickly if a BPDU is received
C.enforce the borders of an STP domain
D.ensure that any BPDUs received are forwarded into the STP domain
A.ip pim rp-address
B.ip pim ssm
C.ip pim sparse-mode
D.ip pim passive
最新試題
Which multicast address is reserved for cisco-rp-discovery？（）
Which two statements are true about RED？（）
On the basis of the network provided in the exhibit， all routers are configured to run EIGRP on all links. If the link between PG-R1 and PG-R2 fails， what is the maximum number of queries PG-R3 will receive for 192.168.1.0/24， assuming that all the packets sent during convergence are transmitted once （there are no dropped or retransmitted packets）？（）
What is also called Type 0 authentication in OSPF on Cisco Routers？（）
In order to configure two routers as anycast RPs， which of these requirements， af a minimum， must besatisfied？（）
Which two statements about SA caching are true？（）
In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicasttraffic to a group？（）
Which command is used to enable SSM with the range 232.0.0.0 - 255.0.0.0？（）
Which message type is constructed and sent from an MSDP router to its MSDP peers when it receives a PIM register message knowing that the MSDP router is also configured as an RP for the PIM domain？（）
When STP UplinkFast is enabled on a switch utilizing the default bridge priority， what will the new bridgepriority be changed to？（）