In an MPLS VPN network, two-layer MPLS labels are added into data packets before they are transmitted over the public network. Which of the following statements regarding data packet processing are correct?

• A.The egress PE sends the data packet to the correct VPN based on the inner label.
• B.The penultimate hop removes the outer label before forwarding the data packet to a peer egress PE.
• C.The IP data packet received by egress LSR is without labels.
• D.The penultimate-hop device receives a packet with an outer label.

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What are the following techniques for improving MPLS BGP VPN reliability?( Multiple choice question)

• A.VPN FRR
• B.dual home networking is configured at the access layer
• C.VPN GR Private IP routing between
• D.PE-CE FRR

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In the following topology diagram,

R1 can be established between R2 and R3 fetches the Internet, RI and R2, R1 and R3 EGP connections, R2, R3 belong to the same AS The default routes are issued through BGP separately, requiring R2 to be preferred for traffic accessed by RI to the Internet, and the following practices can be achieved

• A.R2 specifies peer R1 in the export direction setting MED property to 150
• B.R1 specifies the peer R2 sets the local priority in the import direction to 150
• C.R1 specifies that peer R3 sets the MED property to 150 in the import direction
• D.R2 specifies that peer R1 is in export The direction setting local priority is 150

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gRPC (Google Remote Procedure Call)is a language-neutral, platform-neutral, and open-source remote RPC system that supportsunary RPCs and streaming RPCs.
Which of the following service methodsare NOT supportedby gRPC?

• A.rpc Subscribe(SubsArgs) stream returns(SubsReply) {};
• B.rpc dataPublish(stream serviceArgs) returns(stream serviceArgs) {};
• C.rpc stream LotsOfGreetings(HelloRequest) returns (HelloResponse) {};
• D.rpc Cancel(CancelArgs) returns(CancelReply) {};

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What command can be used to prevent users from accessing multiple devices through the HUB on the switch's access port?( Radio).

• A.Huawei interface GigabiEthemetO/0/1Huawei-GigabiEthemetO/OJport link-type acces Huawei GigabilEthemet/0/1port-secunty enable0
• B.[Huawei iterface Gigabithemeto/0/1 (Huawei-GigabitEthemeto//1)pot ink type access(Huawel-CigabiEthemeto/1]portisolate enable
• C.[Huawei interface GigabiEthemet/0/1[Huawe-GigablEthemetO/0/1Jpor ink type acess(Huawei GigabitEthemet/O/Tipsg enable
• D.[Huawe interface Gigabithemeto/0/1[Huawei-GigabiEthermeto/O/lport linktypetrunk
  [Huawel-GigabithemetO/1]port trunk allow pass vlan 10

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