Printable PDFHuawei H12-891 Exam Questions & Answers
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Vendor: Huawei
Exam Code: H12-891
Exam Name: HCIE-Datacom V1.0
Certification Provider: Huawei
Total Questions: 923 Q&A ( View Details)
Updated on: Jul 05, 2026
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H12-891 Online Practice Questions and Answers
In different scenarios, RSTP provides different protection functions, and the wrong statement about this statement is
A. The root protection feature is enabled for the specified port, and its port role can only remain as the specified port
B. When the anti-TC-BPDU packet attack feature is enabled, the number of times the switching device processes IC BPDU packets per unit time is configurable
C. after the BPDU protection function is enabled on the switching device, if the edge port receives RST BPDU, the edge port will be set to a non-remote port and the spanning tree calculation will be re-performed
D. Start the specified port of root protection, when the port receives a better RSTBPDU, the port will enter the Discarding state and is no longer forwarding packets. If the port does not receive a better RSTBPD for a period of time then automatically revert to the normal Forwarding state
What categories can ACLs be divided into? A. Advanced ACLs
A. Two-layer ACL
B. User-defined ACLs
C. Basic ACL
NSF (Non-StoppingForwarding) and non-stop circuits are transmitted NSR (Non-Stopping Routing) are two highly reliable solutions, and the following statement is correct
A. After NSR enablement, if the business batch backup has not yet ended, a master board failure occurs, the NSR cannot be completed
B. NSR backers require the ability to support NSR through specific message negotiation
C. After NSF is enabled, the router is switched back, and the routing table and forwarding table remain unchanged, so traffic is not lost during grf time
D. NSF routers do not need to negotiate the ability to support NSF through specific messages
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