Deploy BFD and OSPF association on the direct link. If the physical link is disconnected, please arrange the BFD processing process in order.

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The Origin attribute is used to define the origin of BGP path information. There are three types of Origin attributes. Which of the following lists the Origin attributes in descending order of priority?

• A.IGP > EGP > Incomplete
• B.Incomplete > IGP > EGP
• C.EGP > IGP > Incomplete
• D.Incomplete > EGP > IGP

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There are many different types of risks in the network. According to the TCP/IP protocol stack, please match the risk type with each layer of the TCP/IP protocol stack.

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If a new member joins a multicast group in PIM-DM, which of the following descriptions are correct? (Multiple choice)

• A.The multicast network needs to update the multicast distribution tree before it can send multicast data to group members.
• B.In existing networks, the method of waiting for the multicast routing table to time out and then flooding the entire network again is often used to help new users receive multicast information.
• C.You can use the grafting mechanism to proactively establish a multicast distribution path in reverse direction to help new users receive multicast information.
• D.In PIM-DM mode, after using the "diffusion-pruning" method to establish a multicast distribution tree, the status refresh mechanism prevents the downlink interface from automatically recovering once it is suppressed.

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The typical characteristics of the AI era are that it focuses on data, explores data value, and improves AI efficiency. Therefore, the core requirement of AI for data center networks is speed, meaning low latency.

• A.TRUE
• B.FALSE

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