GB0-372-ENU 無料問題集「H3CSE-RS-SW」

（A）The MSTP switch will regard the RSTP switch as an MSTP domain consisting of a single switch.

（B）The MSTP switch will parse the RSTBPDU into an MST BPDU, where IRPC is 0

（C）The RSTP switch will treat the MST region as a logical switch, and the bridge ID is the ID of the switch in the MST region that is actually connected to the RSTP switch.

（D）MSTP switches and RSTP switches can belong to the same MST region

（A）After receiving the BPDU with TC set, SWC will clear the MAC address learned on port E0/1 and send a RST BPDU with TC set from the port.

（B）SWB will send a RST BPDU with TC set within twice the Hello Time.

（C）SWB will clear the MAC addresses learned on ports E0/1 and E0/2 and send RST BPDUs with TC set from these two ports.

（D）After SWA receives the BPDU with TC set, it will clear all MAC address tables and send the RST BPDU with TC set from E0/2.

（A）Table Miss actions can be customized

（B）The priority of Table Miss entries is 0

（C）OpenFlow switches are divided into OpenFlow-Only switches and OpenFlow-Hybrid switches

（D）OpenFlow uses TCP port 6633

（A）In MSTP, since the ports at both ends of the link may be designated ports in different instances, the ports at both ends of the link may both receive and send MST BPDUs at the same time.

（B）When calculating CST, external path costs are given priority, and internal path costs are compared only when external path costs are the same.

（C）The Alternate port and Backup port on the CST must be the region boundary port and must not be in the MST region.

（D）The calculation process of MSTP is to first calculate CST and IST through MSTBPDU, and then the switches in the domain send MSTIBPDU to calculate the spanning tree of each instance.

（A）When certain conditions are met, the port will switch to Secure mode

（B）The device may have 802.1x authentication enabled globally.

（C）When certain conditions are met, the device may trigger the intrusion detection feature

（A）The convergence time of RRPP is independent of the number of nodes on the ring network and can be applied to networks with larger network diameters.

（B）Ethernet ring technology is becoming more mature and low-cost. Technologies to solve the Layer 2 network loop problem include RPR and RRPP.

（C）RRPP (Rapid Ring Protection Protocol) is a network layer protocol specifically used for Ethernet rings.

（D）RRPR requires dedicated hardware, so the cost is higher

（A）STP detects a loop between G1/0/2 or G1/0/3 of SWB and blocks one of them.

（B）SWA's G1/0/1 may be blocked because STP detects a loop.

（C）Loopback-detection detects a loop between G1/0/2 and G1/0/3 of SWB and blocks one of them.

（A）When the topology changes frequently, some ports will often be in the Blocking state, which may cause long-term network interruption.

（B）If there are a large number of hosts in the STP network, the frequent online and offline of the hosts will generate a large number of TCN BPDUs

（C）All VLANs in an STP network share a spanning tree, and load balancing between different VLANs on the Trunk link cannot be achieved.

（D）A port in STP must go through two ForwardDelays from Blocking to Forwarding before it can send data.

（A）Based on SDN Controller mode

（B）Routing protocol extension mode

（C）Decentralized Control Mode

（D）Flooding mode

（A）Link aggregation port bandwidth size 2G

（B）A dynamic aggregation group is established between switches SWA and SWB.

（C）A static aggregation group is established between switches SWA and SWB.

（D）LACP priority is 0x8001

（A）There can be only one BSR in a PIM-SM domain

（B）BSR is responsible for collecting and publishing RP information in the PIM-SM domain

（C）RP in PIM-SM can be manually specified or dynamically elected.

（D）BSR selects the best RP for each multicast group

（A）This BPDU is a configuration BPDU, and the destination address is 01-80-C2-00-00-0

（B）The aging time for the port to save the BPDU is MaxAge

（C）The sending period of this BPDU is HelloTime

（D）SWA is the root bridge in the network

（A）If RSTP is disabled on SWB, port EO/1 of SWC will become the root port

（B）If RSTP of both SWB and SWC is cancelled, port EO/2 of SWA will become the backup port.

（C）SWB's port E0/1 is an alternate port.

（D）Network computation convergence does not require waiting for twice the Forward Delay time

（A）The three-layer switch realizes the functions of VLAN division, two-layer switching within VLAN and inter-VLAN routing.

（B）The three-layer switch contains two parts: the layer 2 VLAN forwarding engine and the layer 3 forwarding engine

（C）The Layer 3 forwarding engine of a Layer 3 switch is equivalent to the function of a router in a traditional network, using hardware ASIC technology to implement Layer 3 routing forwarding across network segments

（D）The Layer 3 switch actually combines some functions of the Layer 2 switch and router, improving network integration and enhancing forwarding performance.

（A）As long as the DR has a receiver of multicast group G locally, the DR will periodically send a join message to the upstream.

（B）If there is still a receiver in the shared network segment under the interface where the upstream router receives the prune message, the receiver will send a group join message

（C）Both PIMSM and PIM DM have pruning veto processes

（D）When there are no receivers of multicast group G locally in the DR, the DR will send a prune message to the upstream router.

（A）The data frame with VLAN10 tag is discarded when it enters port Ethernet 1/0/1

（B）Data frames with VLAN1 tags will be discarded when they enter port Ethernet 1/0/1

（C）The data frame with VLAN10 tag will not be stripped when it leaves port Ethernet 1/0/1.

（D）The data frame with VLAN10 tag will be stripped of the tag when it leaves port Ethernet 1/0/1