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Huawei HCIE-Datacom V1.0 Sample Questions:

1. There is an existing switch running the RSTP protocol. If the network topology changes, what happens to the Layer 2 forwarding table that is automatically learned by the switch?

A) Except for the table entry related to the edge port that is not deleted, all other table entries are deleted
B) Only table entries related to the port that received the TC message are dropped
C) All table entries are dropped
D) Table entries are dropped except for table entries related to edge ports and table entries related to ports that receive TC messages
E) If the aging time is set to 15 seconds, entries that exceed the aging time are deleted

2. What descriptions of the OSPF protocol are correct?

A) The cost value of the second type of external route is only the AS external cost value, ignoring the AS internal cost value
B) AS-External-LSA describes the path to the as outside of the route, and the scope of the flood is the AS outside
C) AS-External-LSA describes the router's path to ASBR
D) AS-External-LSA does not belong in any region

3. The following statement about RSTP root protection is correct?

A) The port that turns on the root protection receives the RST BDPU with a higher priority and will enter the error-down state
B) After opening the root-protected port and receiving the RSTBPDU with a higher priority, if it does not continue to receive the RSTBPDU with a higher priority for a period of time, it will return to the normal forwarding state
C) Turning on root protection on the root port takes effect
D) It is recommended that you turn it on on a switch that is at the edge of the network

4. The following statement about a cross-domain MPLS VPN is mischaracteristic?

A) For the cross-domain VPN-OptionB approach, an MP-eBGP neighbor relationship needs to be established between the two ASBRs.
B) For the cross-domain VPN-OptionB approach, two ASBR-PEs are interconnected with multiple interfaces (including sub-interfaces), each associated with a VPN, each ASBR PE treats the peer as a CE.
C) When the public network tag is LDP only, for cross-domain VPN-optionC scenario 2, a three-layer tag is required in the packet forwarding process.
D) For the cross-domain VPN-OptionA mode, the route passed between the two ASBRs is a normal IPv4 route.

5. What is the exact description of the SSM features?

A) Using SSM, the receiver can use INCLUDE in IGMPv3 to indicate that the source
B) SSM requires MSDP to discover active sources in other PIM domains
C) SSM he wishes to join is an extension of the DVMP protocol. to efficiently transmit one-to-many communication traffic
D) Routing multicast traffic in the SSM is done by relying on the number of sources, and the RP is used for the receiver to answer the corresponding number of sources

Solutions: