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| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIE-Datacom V1.0 Written Exam |
| Exam Number: | H12-891_V1.0 |
| Certificate Validity Period: | 3 years |
| Available Languages: | Chinese, English |
| Real Exam Qty: | 60-70 |
| Exam Price: | USD 300 (approx.) |
| Exam Format: | Single choice questions, Multiple choice questions |
| Passing Score: | 600/1000 |
| Exam Duration: | 120 minutes |
| Related Certifications: | HCIP-Datacom HCIE-Datacom HCIA-Datacom |
| Recommended Training: | Huawei Learning Platform HCIE-Datacom Official Training |
| Exam Registration: | Huawei Certification Exam Registration Huawei Talent Certification Platform |
| Sample Questions: | Huawei H12-891_V1.0 Sample Questions |
| Exam Way: | Computer-based online or authorized test center exam (via Huawei certification system / Pearson VUE where applicable). |
| Pre Condition: | Recommended to hold HCIP-Datacom certification or equivalent knowledge before attempting HCIE-Datacom exam. |
| Official Syllabus URL: | https://e.huawei.com/en/talent/#/cert/overview |
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NEW QUESTION # 78
The display current-configuration command displays the running configurations in memory.
Answer: B
Explanation:
Comprehensive and Detailed Explanation:
Thedisplay current-configurationcommand is used toshow the active running configurationstored inRAM (memory).
Key Features:
#Displays current settingsfor interfaces, routing, and security.
#Reflects real-time changes(different from startup-config stored in NVRAM).
#Useful for troubleshooting and verificationbefore saving configurations.
Thus, the statement isTRUE.
#Reference:Huawei HCIE Datacom - Command Reference Guide
NEW QUESTION # 79
As shown in figure, Clent1, C lent2 and Clent3 are simultaneously clients of RR1. Ri introduces 10 routes. It is assumed that the RGP is configured correctly. The neighbor relationship has been established, how many route entries exist in the BGP routing table of the most clIient3?
Answer: C
NEW QUESTION # 80
If all the public IP addresses are used by a company's intranet users to access the Internet using NAT's No-pat method, what will happen to subsequent intranet users who access the Internet?
Answer: B
NEW QUESTION # 81
Complete the basic processing procedure for DiffServ model-based QoSshown in the figure
Answer:
Explanation:
Explanation:
TheDifferentiated Services (DiffServ) modelforQuality of Service (QoS)enables traffic management based on predefined priorities. This involvesclassifying, policing, queuing, and scheduling trafficto ensure efficient network resource utilization.
Breakdown of Each QoS Processing Step:
#Step 1: Traffic Classification and Marking
Purpose:Identifies and marks packets based onQoS attributessuch asDSCP (Differentiated Services Code Point) or 802.1p priority bits.
Function:Assigns aQoS labelto packets for further processing.
Example:Packets carryingvoice traffic (EF - Expedited Forwarding)are marked forhigh-prioritytreatment.
#Step 2: Traffic Policing (CAR - Committed Access Rate)
Purpose:Enforcesbandwidth limitson specific traffic flows to prevent excessive usage.
Function:Drops or re-marks packetsexceeding the assigned bandwidth threshold.
Example:If avideo stream exceeds 10 Mbps, excess packets may bedropped or re-marked.
#Step 3: Congestion Management (Queuing and Scheduling)
Purpose:Managestraffic flow through queuesbased on assigned QoS levels.
Function:Places packets in appropriatepriority queues (e.g., Strict Priority, Weighted Fair Queuing - WFQ, CBWFQ).
Example:Voice packets are assigned tohigh-priority queuesforlow-latency forwarding.
#Step 4: Congestion Avoidance
Purpose:Prevents networkbuffer overflows and excessive packet drops.
Function:Uses mechanisms likeWRED (Weighted Random Early Detection)to drop lower-priority packets before congestion occurs.
Example:If a queuereaches 80% capacity, WRED may droplow-priority packetsto maintain QoS.
#Step 5: Traffic Shaping
Purpose:Smooths out traffic burststo maintain a consistenttransmission rate.
Function:Buffers and delays packetsto prevent excessive packet drops.
Example:Ifoutgoing traffic exceeds 50 Mbps, shaping ensures itdoes not exceedthis limit while maintaining steady flow.
NEW QUESTION # 82
ISlS protocol In broadcast networks and P2P networks, when the router receives LSP, it needs to use PSNP to confirm and ensure the synchronization of LSDB
Answer: A
NEW QUESTION # 83
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