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Updated: Sep 13, 2026
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Huawei H12-821_V1.0-ENU Exam Overview:
| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIP-Datacom-Core Technology V1.0 |
| Exam Number: | H12-821_V1.0-ENU |
| Exam Format: | Drag and drop questions, Multiple-choice questions, Single-choice questions, True/False questions |
| Exam Duration: | 90 minutes |
| Passing Score: | 600/1000 |
| Related Certifications: | HCIP-Datacom HCIA-Datacom |
| Available Languages: | Chinese, English |
| Exam Price: | $200-$300 (varies by region) |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 60-70 |
| Recommended Training: | HCIP-Datacom Core Technology Training |
| Exam Registration: | Huawei Talent Development Center |
| Sample Questions: | Huawei H12-821_V1.0-ENU Sample Questions |
| Exam Way: | Online proctored exam or authorized test center delivery (Pearson VUE / Huawei certification system depending on region) |
| Pre Condition: | Recommended: HCIA-Datacom certification or equivalent networking knowledge |
| Official Syllabus URL: | https://e.huawei.com/en/talent/ |
Huawei H12-821_V1.0-ENU Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Network Services and QoS | - QoS Mechanisms and Traffic Management - Network Reliability and Redundancy |
| Topic 2: IP Network Fundamentals | - TCP/IP Model and Networking Principles - IPv4 and IPv6 Addressing |
| Topic 3: MPLS and VPN Technologies | - MPLS Architecture and Label Switching - L2VPN and L3VPN Deployment |
| Topic 4: Routing Protocols | - OSPF Implementation and Optimization - IS-IS Fundamentals - BGP Basics and Policy Control |
| Topic 5: Network Management and Automation | - Network Monitoring and O&M Tools - Basic Network Automation Concepts |
Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:
By default, how many seconds is the BCP peer adjacency relationship maintained?
- A. 10 seconds
- B. 180 seconds
- C. 60 seconds
- D. 120 seconds
Which of the following descriptions about VRRP is incorrect?
- A. If the Backup router works in non-preemptive mode, as long as the Master router does not fail, the Backup router will not become the Master router even if it is subsequently configured with a higher priority.
- B. By default, if a Master already exists, for the sake of network stability, the Backup with a higher priority will not preempt.
- C. VRRP priority determines the status of each router in the virtual router based on priority.
- D. When two routers with the same priority compete for Master at the same time, the one with the larger interface address is preferred as Master.
The main function of MBGP is to help perform RPF verification of cross-domain multicast flows.
- A. FALSE
- B. TRUE
Which of the following reasons may prevent OSPF neighbor relationships from being established?
(Multiple choice)
- A. The sending intervals of Hello messages between the two routers are inconsistent.
- B. The two routers are set with different Process IDs
- C. The two directly connected interfaces use the p2p network type, but the IP packet with the destination IP address 224.0.0.6 is refused to be transmitted.
- D. The two directly connected interfaces use different network types.
- E. The dr-priority of the two directly connected interfaces is set to 0.
- F. Two routers are configured with the same Router ID.
As shown in the figure, the management VLAN of the LAN is VLAN 10, the AP obtains an IP address through DHCP, and the network segment is 10.1.1.0/24 AP, AC and AR are DHCP client, DHCP relay device and DHCP server respectively.
Which of the following is correct about the configuration of the DHCP relay device and the DHCP server?
(Multiple choice)
- A. [AR] ip pool AP [AR-ip pool-AP] network10.1.1.0 mask 24
[AR-ip-pool-AP] gateway-list 10.1.1.2
[AR-ip-pool-AP] excluded ip-address 10.1.1.1
[AR-ip-pool-AP] quit
[AR] interface GigabitEthernet 0/0/1
[AR-GigabitEthernet0/0/1] dhcp select global
[AR-Gigabi tEthernet0/0/1] quit
[AR] ip route-static 10.1.1.0 255.255.255.0 172.21. 1.1 - B. [AC] dhcp server group AP
[AC-dhcp-server-group-AP] dhcp-server 172.21.1.2
[AC-dhcp-server-group-AP] quit
[AC] interface Vlanif 10
[AC-Vlanif10] dhcp select relay
[AC-Vlanif10] dhcp relay server-select AP
[AC-Vlanif10] quits - C. [AR] ip pool AP
[AR-ip-pool-AP] network 172.21.1.0 mask 24
[AR-ip-pool-APJ gateway-list 172.21.1.2
[AR-ip-pool-AP] excluded-ip-address 172.21.1.1
[AR-ip-pool-AP] quit
[AR] interface GigabitEthernet 0/0/1
[AR-GigabitEthernet0/0/1] dhcp select global
[AR-GigabitEthernet0/0/1] quit
[AR]ip route-static 10.1.1.0 255.255.255.0 172.21.1.1 - D. [Ac]dhcp server group AP
[AC-dhcp-server-group-AP] dhep-server 10.1.1.2
[AC-dhcp server group-AP] quit [AC] interface Vlanif 10
[AC-V1anif10] dhcp select relay
[AC-Vlanif10] dhcp relay server-select AP
[AC-Vlanif10] said
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