In special scenarios, when advertising routes to an IBGP peer, a BGP device needs to set the next hop to its IP address to prevent blackhole routes. Which of the following commands can be run in this case?

• A. peer private-nexthop
• B. peer next-hop-invariable
• C. peer next-hop-local
• D. peer mpls-local-ifnet

Which of the following statements regarding the MED value in BGP are true?

• A. The default MED value of BGP routes is 0.
• B. By default, BGP can compare the MED values of routes from different ASs.
• C. By default, if there is no MED value in routes, the value 0 is used. If the bestroute med-none-as- maximum command is configured, the maximum MED value 4294967295 is used.
• D. According to BGP route selection rules, the MED value has a lower priority than AS_Path, Preferred- Value, Local-Preference, and Origin.

Which of the following statements regarding multicast MAC addresses are false?

• A. One multicast MAC address maps to only one multicast IP address.
• B. The high 24 bits of the multicast MAC address are 0x01005E, the 25th bit is fixed to 1, and the lower
  23 bits of the MAC address map to the lower 23 bits of the multicast IP address.
• C. A multicast MAC address identifies receivers of a multicast group on the data link layer.
• D. One multicast MAC address maps to 32 multicast IP addresses.

When configuring BFD to detect link faults on devices at both ends, an enterprise administrator incorrectly sets parameters to different values on the two devices, as shown in the figure. Which of the following is the interval for sending packets on R1 after negotiation?

• A. 100 ms
• B. The negotiation fails and the interval changes to 0.
• C. 150 ms
• D. 200 ms

A Layer 2 switch supports multiple types of Ethernet interfaces. Similar to a trunk interface, a hybrid interface allows data frames from multiple VLANs to pass through. In addition, you can determine whether data frames from a VLAN sent out from a hybrid interface are tagged or untagged.

• A. TRUE
• B. FALSE