The following is about the PIM-SMRegister message description is correct? ( confirmed)

• A.The Register message enables the RP to learn the multicast source information
• B.The Register message is sent by the receiver router
• C.The Register message is sent by the source DR
• D.The Register message is sent to the RP via unicast instead of multicast

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Router HW1 asMPLS LSR routers exist in the network of the operator HW. The router receives a packet with a label, but the Label table entry does not exist in its Lin the FIB. So how does the router process the packet?

• A.Router HW1The message will be forwarded with the default label
• B.Router HW1will discard the message
• C.Router HW1 will use LDP to create an LSP and create a new path in LFIB for the label carried in the packet
• D.Router HW1 strips the label and looks forFIB uses IP destination address

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The router connects two EBGP neighbors through two parallel serial cables, what method would you use to achieve this through the two parallel serial cablesBidirectional load sharing between two connected EBGP neighbors?

• A.Using the Loopback interface Establish EBGP neighbor relationship and configure EBGP Multi-hop, configure the loopback interface as the update source, and then use IGP to achieve equal-cost path load sharing between loopback addresses
• B.To configure the EBGP neighbor relationship with the loopback interface as the update source, the IGP in each AS needs to introduce two equal-cost paths to the EBGP neighbor loopback interface address; and the command "ebgp-max- hop" and "next-hop-local*
• C.Without any method, BGP will automatically realize the load balancing of traffic among different autonomous systems on the available links
• D.To configure the EBGP neighbor relationship with the loopback interface as the update source, the IGP in each AS must have two equal-cost paths to the EBGP neighbor loopback interface address; and the command "next-hop-local"
• E.Use the command "ebgp on both ends"-load-balance"

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Which of the following statements about the VRRP protocol is correct?

• A.Both VRRPv2 and VRRPv3 support authentication
• B.VRRPv3 does not support the authentication function, while VRRPv2 supports the authentication function.
• C.VRRPv2 is only applicable to IPv4 networks, and VRRPv3 is only applicable to IPv6 networks.
• D.Masterr The owner of the IP address VThe RP priority is 255, so the configurable priority range is 0-254

Correct Answer: B

Explanation
VRRP forIPv4 supports VRRPv2 and VRRPv3, while VRRP for IPv6 only supports VRRPv3. Through packet construction, it can be found that v2 has an authentication field, but v3 does not.

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VRRPThe priority cannot be set to 0. The device that sends the VRRP priority of 0 stops participating in the VRRP backup group, and notifies the backup device to become the master device as soon as possible without waiting for the Master-Down-Interval timer to expire.

• A.True
• B.false

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