Which of the following descriptions is wrong about the address function of NDP?

• A.When sending a Neighbor Solicitation message, the destination address is set as the multicast address of the requested node of the neighbor
• B.When sending a Neighbor Solicitation message, the source address is set to be the link-local address of the local interface
• C.Two types of ICMPv6 packets, neighbor solicitation and neighbor advertisement, are used in the addressing process.
• D.The address realizes the function from IPv6 address to link layer address

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As shown in the figure, in the MA network, if R1 must be DR, R2 must be BDR, and R3, R4, and R5 do not participate in the election, then the maximum dr-priority of R1 is (), and the dr-priority of R2 is the maximum is (), the dr-priority of R3 is (), the dr-priority of R4 is (), and the dr-priority of R5 is ().

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The linkage between BFD and OSPF uses BFD's rapid sensing of link failures to speed up the OSPF protocol's response to network topology changes, which can increase the OSPF convergence speed from seconds to milliseconds.

• A.TRUE
• B.FALSE

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Which of the following parameters are not mandatory items when configuring BGP Peer? (Multiple choice)

• A.description
• B.IP Address of the peer
• C.Password
• D.as number

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When deploying BFD, you need to adjust some parameters so that it can better detect the network status.
Which of the following statements is false about BFD optimization?

• A.After a high priority is configured for BFD packets, BFD packets are preferentially forwarded.
• B.To quickly learn about the network status and performance requirements, you can set the interval for sending BFD packets to the minimum value.
• C.On a live network, some devices switch traffic only when a BFD session changes to the Up state. If a routing protocol goes Up later than an interface, no route is available for switching traffic back, leading to traffic loss. To resolve this issue, configure a delay to compensate for the time difference caused when the routing protocol goes Up later than the interface.
• D.If a BFD session flaps, master/backup switchovers are frequently performed on the application associated with the BFD session. To prevent this, set the WTR time of the BFD session.

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