GB0-372-ENU 無料問題集「H3CSE-RS-SW」

（A）Nova plug-in maps the OpenStack virtual network model to the VCF virtual network model

（B）The Router, Network, Firewall, etc. in the OpenStack virtual network model can all be found on VCFC.

（C）When it is mapped to a physical device, it may be a securely managed firewall context or a service chain VFW.

（D）The firewall in the OpenStack virtual network model is abstracted and converted by VCFC logic.

（E）VCFC abstracts physical network device resources into the logical concept of a virtual network model

（A）After the link between SWA and SWC is disconnected, the VRRP Master will remain unchanged, but the SWC downstream terminal will not communicate with the gateway.

（B）When the link between SWA and SWC is disconnected, the STP topology will change, and G1/0/2 of SWC will become Forwarding

（C）When the link between SWA and SWB is disconnected, the STP topology will change, and both uplink ports of SWC will become Forwarding

（D）When the link between SWA and SWB is disconnected, the VRRP Master will switch and SWB will become the new VRRP Master

（A）[SWA] interfaceVlan-interface 10
[SWA-Vlan-interface10] ip address 10.1.1.4 255.255.255.0
[SWA-Vlan-interface10] local-proxy-arp enable

（B）[SWA] supervlan10 subvlan 2 3

（C）[ SWA] vlan 10
[SWA-vlan 10] supervlan

（D）[SWA] vlan3
[SWA-vlan3] port Ethernet 1/0/2

（E）[SWA] vlan2
[SWA-vlan2] port Ethernet 1/0/1

（F）[SWA] vlan10
[SWA-vlan10] local-proxy-arp enable
[SWA] interface Vlan-interface 10
[SWA-Vlan-interface10] ip address 10.1.1.4 255.255.255.0

（A）VXLAN

（B）NVGRE

（C）oVSDB

（D）OpenFlow

（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）VXLAN technology has high market recognition

（B）Add 50Bytes to the original message

（C）VXLAN technology does not change the L2-L4 message structure

（D）The VXLAN transport layer is encapsulated based on UDP, and load balancing can be performed based on the UDP source port number.

（A）As shown in the figure, when SWB is connected to another switch SWD running RSTP, SWD will send RSTBPDU with TC set.

（B）When the edge port EO/1 of SWC is connected to a PC, SWC will send a RST BPDU with TC set.

（C）When the link between SWB and SWC is DOWN, both SWB and SWC will send RST BPDU with TC set.

（D）As shown in the figure, when SWB is connected to another switch SWD running RSTP, SWB will send RSTBPDU with TC set.

（A）After the loop protection function is enabled, when the BPDU stored on the port ages, the loop protection takes effect.

（B）If the role of the root port changes, it will change to the Discarding state and will not forward messages, so as not to form a loop in the network. The Discarding state will be maintained until the port receives a BPDU again and becomes a root port again.

（C）Link blocking or one-way link may cause loops

（D）In MSTP, this function is valid for root ports, alternate ports, and backup ports.

（A）SWA can communicate with SWB

（B）SWA can communicate with PCA

（C）SWA can communicate with PCB

（D）SWA can communicate with PCC

（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 accurate matching switch forwards the subsequent packets through hardware after the first packet is searched and processed by software, but it cannot cope with the impact of worm viruses on routing.

（B）The longest matching switch searches the routing table through software.

（C）Exact match switches use software to look up routing tables and forward packets one by one

（D）The longest match switch uses hardware table entries to replace the software routing table, and follows the longest match principle when searching. Even in the case of extremely serious network worms, it can still ensure the line-speed forwarding of IP packets.

（A）Connect to the SDN network through routing and other methods on the Spine device

（B）Access the SDN network egress firewall through NAT, VPN, routing, etc.

（C）Configure in-band management VLAN on VCFC

（D）Access the SDN network through VLAN-VXLAN mapping on the Leaf device

（A）In sparse mode, multicast data streams are sent from the multicast source to the multicast receivers in a pull manner, and the multicast receivers actively send reception requests.

（B）Multicast routing protocols have two modes: dense and sparse

（C）In dense mode, multicast data streams are pushed from the multicast source to every corner of the network, and multicast receivers passively receive multicast packets.

（D）Intra-domain multicast routing protocols include: MSDP, DVMRP, MOSPF, PIM

（A）Login Password

（B）Encrypt only username and password

（C）Login Username

（D）Transmitting Data

（A）BSR is generated through an automatic election process between C-BSRs

（B）C-RP routers periodically send announcement messages in multicast mode

（C）When C-BSR is elected, the priority is compared first, and then the IP address of the bootstrap message is compared.

（D）After receiving the C-RP announcement message, the BSR calculates the RP to be selected for each multicast group based on the relationship between the RP and the multicast group, and multicasts the calculation result.

（A）SDN Industry Alliance

（B）IETF

（C）ETSI

（D）ONF

（A）None of the above is correct

（B）[SWA-Ethernet1/0/1] portlink-type access
[SWA-Ethernet1/0/1] port link-type hybrid
[SWA-Ethernet1/0/1] port hybrid pvid vlan 20
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged

（C）[SWA-Ethernet1/0/1] undoportlink-type
[SWA-Ethernet1/0/1] portlink-type hybrid
[SWA-Ethernet1/0/1] port hybrid pvid vlan 20
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged

（D）[SWA-Ethernet1/0/1] port link-type hybrid

（E）[SWA-Ethernet1/0/1] portlink-type access
[SWA-Ethernet1/0/1] port access vlan 20
[SWA-Ethernet1/0/1] port link-type hybrid
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged