Free H12-891 – Huawei H12-891 Practice Test Question

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• ○ To prevent loops.
• ○ To prevent sub-optimal routes.
• ○ To prevent memory insufficiency caused by receiving too many routes on RRs.
• ○ To prevent memory insufficiency caused by receiving too many routes on clients.

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• ○ 1
• ○ 2
• ○ 3
• ○ 4

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• ○ 125
• ○ 126
• ○ 127
• ○ 124

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• ○ Packets with the same FEC are processed differently on a MPLS network.
• ○ FECs can be divided flexibly by source IP address destination IP address, source port, destination port, protocol type, VPN, or any combinations of them.
• ○ MPLS classifies packets with the same forwarding processing mode into one FEC.
• ○ One FEC has only one unique label marker.

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• ○ All external priorities can be mapped to internal priorities in a one-to-one relationship.
• ○ There are eight internal priorities.
• ○ The highest internal priority is CS7.
• ○ The highest internal priority is EF.

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• ○ The virtualized campus network solution introduces VXLAN technology, which uses MAC-in-UDP encapsulation to build a logical network over a traditional IP network.
• ○ The underlay network provides IP reachability so that VXLAN-encapsulated service packets can be transmitted between VTEPs.
• ○ When iMaster NCE-Campus is used to implement automatic orchestration of routing domains on the underlay network, only one routing protocol can be deployed in a single area.
• ○ When iMaster NCE-Campus is used to implement automatic orchestration of routing domains on the underlay network, only OSPF is supported.

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• ○ DSCP value
• ○ MPLS EXP value
• ○ Source or destination IP address
• ○ Traffic class