Free H3C GB0-371-ENU Exam Dumps Questions & Answers

The following statements about BSR and RP in PIMSM are correct:

• A.  C-RP routers periodically send announcement messages in multicast mode
• B.  BSR is generated through an automatic election process between C-BSR
• C.  After receiving the C-RP announcement message, the BSR calculates the RP to be selected by each multicast group according to the relationship between the RP and the multicast group, and multicasts the calculation result
• D.  During C-BSR election, the priority is first compared, and then the IP address of the bootstrap message is compared

Which of the following protocols are multicast routing protocols running between routers and routers?

• A.  MLD
• B.  PIM
• C.  IGMPV2
• D.  DVMRP
• E.  MOSPF

Regarding RP and BSR, which of the following statements are correct?

• A.  When configuring RP through dynamic election, you can configure the router that intends to become RP as C-RP
• B.  BSR is responsible for collecting and publishing RP information in PIM-SM domain i
• C.  RP in PIM-SM can be specified manually or dynamically elected
• D.  There can only be one BSR in a PIM-SM domain

Regarding the POE system, the correct statement is

• A.  Usually PSE can support two methods of mid-span and end-span, PD can only support one
• B.  The POE system includes two parts: PSE equipment and PD equipment, where PD is the power supply device, and PSE is the power receiving device
• C.  The voltage provided by the POE power supply is 48V, and the output power usually does not exceed 13W
• D.  POE usually uses mid-span and end-span power supply methods

As shown in the network, the switches all run RSTP. Initially, SWA, SWB and SWC are interconnected. When the topology is stable, connect SWB and SWD, then the following statements are correct.

• A.  After SWA receives the BPDU with TC set, it will clear the MAC address table and send RSTBPDU with TC set from E0/2
• B.  SWB will clear the MAC addresses learned by ports E0/1 and E0/2 and send RST BPDUs with TC set from these two ports
• C.  SWB will send RST BPDU with TC set within twice the HelloTime
• D.  After SWC receives the BPDU with TC set, it will clear the MAC address learned by port E0/1 and send RST BPDU with TC set from this port