The OF election mechanism avoids network resource waste caused by repeated traffic received by CE1 from two PEs. Which of the following NIRI Is used to implement this feature?

• A.Ethernet Segment Route
• B.MAC advertisement route
• C.Inclusive Multicast Route
• D.Ethernet Auto-Discovery route

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Compared with VPLS, what are the characteristics of EVPN?

• A.The PE learns the local and remote MAC addresses and their IP addresses through ARP and MAC address advertisement routes, and caches the information locally to prevent ARP request packets from being broadcast to other PEs and reduce network resource consumption.
• B.EVPN needs to be configured to be in full connection state on all PEs on the carrier's backbone network. That is, PWs must be set up between any two PEs.
• C.EVPN enables a device to implement load balancing among multiple EVPN routes with the same destination MAC address but different next hops when managing MAC addresses.
• D.By using the EVPN technology, PB on the carrier's backbone network do not need to establish full connections, which greatly reduces the network complexity and reduces the number of signaling messages.

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Which of the following statements regarding multicast MAC address is correct?

• A.The first six hexadecimal value of the multicast Mac address is 0x01005e.
• B.Multicast MAC address is composed of 23 bits.
• C.The range of multicast MAC address is assigned by IEEE.
• D.On Ethernet, 28-bits of layer 3 multicast IP address are mapped into the 24-bits of the layer 2 multicast MAC address.

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The following commands ate configured on the router running BGP:
bgp 100
peer 12.12.12.2 as-number 200
ipv4familyunicast
network 1,1.1.1 255.255.255.255
undo synchronization
peer 12.12.12.2 enable
peer 12.12.12.2 next-hop-local
The IP address of the router's interface connected with peer 12.12.12.2 is 12.12.12.1. What's the function of the command "peer
12.12.12.2 next-hop-local"?

• A.Change the next hop of the routes generated locally as 12.12.12.1
• B.Change the next hop of the routes received from peer 12.12.12.2 as 12.12.12.2
• C.Change the next hop of the routes advertised to peer 12.12.12.2 as 12.12.12.1
• D.This command does not work at all

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In BGP4+, both the NUU field and next-hop attribute can be expressed with an IPv6 address and prefix.

• A.False
• B.True

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