GB0-371-ENU 無料問題集「H3C Constructing H3C High-Performance Campus Networks」

（A）SWA will immediately determine that port E0/1 is the root port

（B）After SWC receives the configuration BPDU sent by SWB, it will not update immediately, but will wait for the locally saved configuration BPDU to age before updating

（C）The topology will re-converge after 30 seconds by default

（D）After the priority is adjusted, SWB will immediately send configuration BPDUs with itself as the root from ports E0/1 and E0/2

（A）In MSTP, this function is valid for root port, alternate port and backup port

（B）If the role of the root port changes, it will become the Discarding state, without forwarding packets, so that no loop will be formed in the network. The Discarding state will be maintained until the port receives the BPDU again and becomes the root port again.

（C）Link congestion or single link may cause loops

（D）After the loop protection function is activated, when the BPDU saved on the port ages, the loop protection takes effect

（A）Routerl and Router2 periodically send general group queries to the shared network segment

（B）Only Router1 periodically sends general group queries to the shared network segment

（C）After the host receives the query message, only Client1 sends the Report message

（D）After the host receives the general group query message, Clientl sending the Report message for joining Group A will not inhibit the Report message for Client2 joining Group B

（E）After the host receives the general group query message, Client1, Client2, and Client3 may all send the corresponding

（F）Only Router2 periodically sends general group queries to the shared network segment

（A）[SWC]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

（B）[SWB]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

（C）[SWA]display interface Ethernet 1/0/1 Ethernetl/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

（D）[SWB]display interface Ethernet 1/0/2 Ethernet1/0/2 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

（A）RSTP can implement load sharing of data of different VLANs on Trunk links on the basis of STP

（B）The switch running RSTP can work with the switch running STP and improve the convergence time of STP

（C）RSTP has all the functions of STP, but it only uses one type of BPDU

（D）RSTP is defined in the old EE802.1 D standard, and its protocol thinking is the same as STP, but the convergence time is improved

（A）99.999%

（B）99.99%

（C）99.9999%

（D）99.9%

（A）If there is a corresponding (S, G) entry in the multicast forwarding table, and the interface actually reached by the packet matches the inbound interface in the entry, the router forwards the multicast data

（B）If the corresponding (S, G) entry does not exist in the multicast forwarding table, the router discards the multicast data

（C）If there is a corresponding (S, G) entry in the multicast forwarding table, but the interface that the packet actually reaches does not match the inbound interface in the entry, the router discards the multicast data

（D）If the multicast data RPF interface does not match the inbound interface in the (S, G) entry, the router will update the inbound interface of the entry to the checked RPF

（A）interface Ethernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 3

（B）interfaceEthernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all

（C）interface Ethernet 1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 10

（D）interfaceEthernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 2

（A）Switches belonging to the same MST domain must have the same VLAN and instance mapping relationship

（B）If the MST domain names configured on the two switches are not the same, the two switches must belong to different MST domains

（C）Switches running MSTP need to exchange a complete mapping relationship between VLANs and instances. If the mapping relationship is different, the switches do not belong to the same MST domain.

（D）RSTP runs between MST regions

（A）When the link between SWB and SWC is interrupted, VRRP Master will remain unchanged, and SWC downstream terminals can still communicate normally

（B）When only the link between SWB and SWC is intact in the figure, both SVVA and SWB will become VRRP masters, and the lower end of SWC can communicate with the gateway normally.

（C）When only the link between SWB and SWC is intact in the figure, the VRRP Master will remain unchanged, but the SWC downstream terminal cannot communicate with the gateway

（D）When the link between SWB and SWC is interrupted, the port status on the remaining STP links remains unchanged, and Forwarding is still maintained

（A）Possess a large number of interfaces for connecting with end user computers

（B）High-speed packet switching

（C）Access security control

（D）Necessary routing strategy

（A）SWB can communicate with PCA

（B）None of the above answers

（C）SWB can communicate with PCC

（D）SWB can communicate with PCB

（E）SWB can communicate with SWA

（A）After link aggregation is configured on both SWA and SWB, if both SWA and SWB enable MSTP on the aggregation port, GigabitEthernet1/0/1 and GigabitEthe1/0/2 can participate in forwarding

（B）Only when GigabitEthernet1/0/2 and Gigabit1/0/1 allow all VLANs to pass, they can join the same aggregation group

（C）Only by changing the configuration of GigabitEthe1/0/2 to be consistent with GigabitEthe1/0/1, can they join the same aggregation group

（D）After link aggregation is configured on SWASWB, if both SWA and SWB enable MSTP on the aggregation port, one of GigabitEthe1/0/1 and GigabitEthe1/0/2 will be blocked

（A）When the outgoing interface list in the router (S, G) table entry is empty, Prune messages will be sent to all PIM neighbors

（B）When the router has no local directly connected multicast receivers, it will send Prune to all PIM neighbors

（C）After the router interface receives the Prune message, it will no longer send packets of the corresponding multicast group on this interface

（D）Assert (assertion) the losing party will send to the winning party