GB0-372-ENU 無料問題集「H3CSE-RS-SW」

（A）RT1

（B）RT2

（C）RT3

（A）If the multicast data RPF interface does not match the incoming interface in the (SG) table entry, the router will update the incoming interface of the table entry to the RPF interface obtained by the check.

（B）If there is a corresponding (SG) entry in the multicast forwarding table, and the interface where the packet actually arrives matches the inbound interface in the entry, the router forwards the multicast data.

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

（D）If there is no corresponding (S, G) entry in the multicast forwarding table, the router discards the multicast data

（A）Among the many actions defined by OpenFlow, drop means to discard directly

（B）OpenFlow channels can be encrypted using TLS

（C）Feature Request message is used to negotiate the OpenFlow version

（D）Hello message is used for OpenFlow keepalive

（A）Source IP address of the data frame

（B）Destination MAC address of the data frame

（C）Source MAC address of the data frame

（D）Source MAC address of the data frame

（E）VLAN attributes of data frames

（A）Password verification is an authentication method that must be supported

（B）During the password verification process, the server will check the legitimacy of the user's private key and password. If they are legitimate, the request will be accepted.

（C）No authentication is an optional authentication method

（D）If no authentication is used, the server will return verification success in any case

（A）In RSTP, the Alternate port is used to back up the root port, and the Backup port is used to back up the designated port.

（B）The Discarding port in RSTP is like the Blocking port in STP. When the port is in the Discarding state, it will not send BPDU, but will receive BPDU.

（C）The definitions of root port and designated port in RSTP are the same as those in STP.

（D）There are three states for ports in RSTP. After a port enters the Learning state, it starts to send and receive BPDUs and determines the port role.

（A）Overlay network only needs edge devices to support Overlay, and the middle Underlay network can use traditional devices, which can protect existing investments and facilitate technology implementation.

（B）For the Underlay network, the data packets of the Overlay network are just forwarding of the tunnel endpoint address, so the MAC address specification requirements of the Underlay network (especially the access switch) are greatly reduced.

（C）Overlay encapsulates the Layer 2 message in the IP message, allowing the virtual machine to achieve Layer 2 intercommunication across the Layer 3 network

（D）Overlay expands the number of isolation identification bits. Compared with using VLAN to achieve network isolation, the isolation capability of Overlay network is greatly improved.

（A）If the IP phone voice stream is tagged, the switch port can work in automatic and manual modes.

（B）In automatic mode, the port cannot be an Access port

（C）In manual mode, the port can only be a Trunk port

（D）If the IP phone voice stream is untagged, the switch port can only work in manual mode.

（A）Anti-eavesdropping of messages

（B）Legitimacy of the message

（C）Message Integrity

（D）User access rights check

（A）The ports on switches SWA, SWB, and SWCRRPP rings that access the RRPP ring need to be added to VLAN 4092

（B）The primary ring control VLAN on switches SWB and SWC can be different from that on SWA.

（C）To facilitate network management, you can configure an IP management address on VLAN 4092.

（D）All ports on switches SWA, SWB, and SWC need to be added to VLAN 4092

（A）If the switch is not configured with a bridge priority, the default value is 32768

（B）The smaller the priority value, the lower the priority of the bridge.

（C）The bridge priority value step is 4096

（D）The bridge priority is 16 bits in total, ranging from 0 to 65535.

（A）After receiving the Proposal message sent by SWA, SWB will start the synchronization process to block the old root port, designated port, and edge port.

（B）Port E1/0/1 of SWA and SWB will send a Proposal message, requesting to enter the forwarding state

（C）SWB does not need to generate BPDU by itself. The content of the Agreement message it responds to is copied from the Proposal message sent by SWA.

（D）SWB will immediately reply with an Agreement message after receiving the Proposal message sent by SWA

（A）SWB's port EO/1 needs to wait for the default 30 seconds to enter the forwarding state, so the service recovery from PCB to PCA takes a total of 30 seconds by default.

（B）SWA port EO/1 will not send TCN BPDU to SWC after link is interrupted

（C）SWB's port EO/1 enters the Forwarding state, triggering a topology change process, which shortens the MAC address aging time. Therefore, the service recovery from PCB to PCA takes a total of 45 seconds by default.

（D）Since SWA does not enable STP, service recovery needs to wait for the MAC address of SWC to age, which takes 300 seconds by default.

（A）The port role of SWD's EO/1 port changes in the Listening state from a designated port to a root port.

（B）If the bridge priority of SWD is changed to 0, port EO/2 of SWA will directly enter the Blocking state without the need for the Forward Delay.

（C）Both SWA's EO/1 and SWD's EO/1 need to go through the ForwardDelay delay of the Listening and Learning states to enter the Forwarding state.

（D）The EO/2 port of SWD changes its port role in the Learning state, from a designated port to an Alternate port.

（A）Port Ethernet1/0/1 is a Trunk port that only allows data from VLAN 1 and VLAN 10 to pass through.

（B）When a data frame without a VLAN tag enters port Ethernet1/0/1, it will be tagged with VLAN1.

（C）Data with VLAN1 tag will not be stripped when it leaves port Ethernet1/0/1.

（D）Port Ethernet1/0/1 is a Trunk port, allowing data frames from any VLAN to pass through.

（A）Unified management

（B）Fault visibility

（C）Overall traffic scheduling

（D）Rapid business launch

（A）If the destination IP address and source IP address of the data frame are in the same network segment, the switch will perform Layer 2 forwarding.

（B）If the destination MAC address of the data frame is the MAC address of the VLAN interface of this switch, the switch performs Layer 3 forwarding.

（C）If the destination MAC address of the data frame is not the MAC address of the VLAN interface of this switch, the switch searches the MAC address table for intra-VLAN Layer 2 forwarding.

（D）If the destination IP address and source IP address of the data frame are not in the same network segment, the switch searches the routing table for Layer 3 forwarding.

（A）GetRequest

（B）GetBulkRequest

（C）GetNextRequest

（D）SetRequest