As shown in the figure, PE1 establishes an EVPN peer relationship with each of PE2 and PE3. When the network is initialized, CE1 sends an ARP request packet.
Which of the following statements are correct about how a PE processes the packet?

• A.When forwarding the packet to PE3, PE1 needs to add the BUM traffic label allocated by PE3 to the packet.
• B.PE1 sends a MAC/IP advertisement route carrying the MAC address of CE1.
• C.PE2 forwards the packet to CE1.
• D.PE3 forwards the packet to CE1.

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With telemetry, certain data can be sampled based on specific sampling paths. Which of the following sampling paths are supported by telemetry?

• A.Interface statistics
• B.Information about the optical module on an interface
• C.CPU information
• D.Memory information

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The following description of the LDPLSP establishment process is correct?

• A.The process of establishing a LSP is actually to bind the FEC to the tag and advertise this binding to the LSP upstream LSR process.
• B.In the DoD mode of label publishing, for a specific FEC, the LSR does not need to obtain a label request message from upstream to distribute the label.
• C.When a network topology change causes the next hop neighbor to change, the free label keep method is used. LSR can quickly rebuild the LSP by directly using the labels sent by the original non-optimal next-hop neighbor. Liberal needs more memory and tag space.
• D.By default, LSRs are for the same FEC, and the received tag mappings can only come from the optimal next hop, not from the non-optimal next hop.

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The following description of VRRP load sharing is correct?( Multiple choice questions).

• A.When configuring priority, make sure that the same router acts as a master in the three VRRP backup groups
• B.You can create multiple VRRP backup groups on one interface of a router . The router can act as a master for one VRRP backup group and as a backup for other VRRP backup groups
• C.VRRP load sharing requires at least two virtual routers to provide forwarding services at the same time
• D.When you deploy load sharing, hosts in the same LAN are required to configure the IP addresses of different virtual routers as gateway addresses for missing provinces

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The following is correct about the LSA of OSPFv3

• A.The Link State ID of inter-area prefix-SA, which contains prefix information
• B.When the Referenced Link State Type-2 of the Intra-AreaPrefixLSA, referenced Link State ID Contains the interface ID of the DR
• C.Inter-Area PrefirLSA also contains LinkLocal Information
• D.Router-LSA and Network-LSA do not contain routing information

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