Online Access Free H12-221-ENU Practice Test

IGMPv2 stipulates that when there are multiple routers in a shared network, the IGMP protocol itself elects the querier.

• A.TRUE
• B.FALSE

The ABR in OSPF full-stub area does not flood Type III, Type IV and Type-5 LSA to the area. Therefore, the ABR in the full-stub area needs to manually send a default route to the area to instruct the packet how to reach the destination outside the AS.

• A.True
• B.False

Which of the following description of the distribution tree is correct?

• A.RPT applies to both PIM-DM and PIM-SM.
• B.The RP (Rendezvous Point) is root, the multicast distribution tree that the multicast group members as leaves called SPT.
• C.The multicast source is root, the multicast distribution tree that the multicast group members as leaves called RPT.
• D.SPT applies to both PIM-DM and PIM-SM.

In the OSPF protocol, you cannot use the LS Sequence Number and LS age to determine the age of the same LSA.

• A.True
• B.False

Although the STP protocol can solve the loop problem, the slow convergence of the network topology affects the user communication quality.
RSTP has made many improvements to STP. Which of the following is not an improvement of RSTP to STP?

• A.If a port does not receive configuration BPDUs from the upstream device within 4 consecutive Hello Time durations, the device considers that negotiation with this neighbor fails.
• B.The non-root switch running RSTP sends configuration BPDUs at the interval specified by the Hello Timer. This behavior is completely performed by each device.
• C.RSTP has deleted 3 kinds of port states and added 2 kinds of port roles.
• D.The RSTP port state specification is based on whether the port forwards user traffic and learns the MAC address, reducing the original five port states to three.