There can be multiple nodes under a route -policy, different node numbers are identified by nodes, and each node can have multiple if-match and apply clauses, which of the following descriptions are wrong ?

• A.The relationship between the if-match clauses under each node is "and"
• B.The relationship between the if-match clauses under each node is "or"
• C.There is an "or" relationship between different nodes
• D.The relationship between different nodes is an "and" relationship

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BGP Link State (BGP-LS) introduces a new NLRI into BGP. The NLRI carries link, node, topology prefix, and other information, and is also referred to as the link state NLRI.

• A.TRUE
• B.FALSE

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In a scenario where SR Policies are dynamically established through the controller, which of the following statements about the SR Policy solution architecture is incorrect?

• A.The controller uses NETCONF to deliver configurations such as service interfaces and routing policies.
• B.The controller uses BGP-LS to collect tunnel topology information and computes SR Policy paths.
• C.The controller uses telemetry to deliver information such as SRv6 SIDs to construct SID entries.
• D.The controller uses BGP IPv6 SR Policy to deliver SR Policy information, such as the color, headend, and endpoint information.

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The value of OSPF and BFD linkage is ? Radio

• A.Does not affect OSPF neighbor status
• B.Any change in BFD status is realized by detecting the BFD at the millisecond level, which correlates the OSPF state and realizes the purpose of OSPF rapid sensing link state
• C.OSPF's hello send interval is seconds, which is faster than BFD inductive link state
• D.BFD packet transmission interval can reach the 100-second level, which is slower than the OSPF induction link state

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What are some of the following misrepresentations about URPF, IPSG, and DAI technologies? ( Multiple choice questions).

• A.IPSG technology checks IP packets for source IP spoofing attack prevention, while DAI checks ARP packets to filter attack sources.
• B.DAI does not support manual configuration of binding tables.
• C.URPF can be used to protect against DDoS spoofed source attacks.
• D.IPSG checks the source IP address and source MAC address of the IP packet , and DAI only checks the correspondence between the IP and the MAC.

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