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Huawei H12-821_V1.0 Exam Questions

Exam Name: HCIP-Datacom-Core Technology V1.0
Exam Code: H12-821_V1.0
Related Certification(s):
  • Huawei Certified ICT Professional HCIP Certifications
  • Huawei HCIP Datacom Certifications
Certification Provider: Huawei
Number of H12-821_V1.0 practice questions in our database: 219 (updated: Apr. 24, 2025)
Expected H12-821_V1.0 Exam Topics, as suggested by Huawei :
  • Topic 1: Data Communication Fundamentals: This section addresses fundamental ideas in data communication for network engineers, such as network models, data transfer, and network topologies.
  • Topic 2: Routing Protocols: This section, intended primarily for network engineers, covers the various routing protocols and covers how to set them up and resolve issues. This category includes both internal gateway protocols (IGPs) like OSPF and RIP and external gateway protocols (EGPs) like BGP.
  • Topic 3: Switching Technologies: Aimed at network engineers, this section covers switching principles, VLANs, and STP.
  • Topic 4: Network Security: For network engineers, this section covers the fundamentals of network security, including firewalls, virtual private networks, and access control lists (ACLs).
  • Topic 5: Network Troubleshooting: Network engineers should refer to this section, which covers frequent network problems, troubleshooting techniques, and optimizing network performance.
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Beatriz

6 days ago
HCIP-Datacom-Core done and dusted! Pass4Success's relevant questions were a game-changer for my quick study plan.
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Lettie

1 months ago
EVPN concepts were included. Study EVPN route types and use cases. The exam had scenario-based questions on EVPN implementations.
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Zona

1 months ago
Successfully passed HCIP-Datacom-Core! Pass4Success's materials were crucial for my last-minute preparation.
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Skye

2 months ago
WAN optimization techniques were tested. Understand compression and caching mechanisms. Pass4Success really helped with this less common topic!
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Stanford

2 months ago
Layer 2 technologies were important. Know STP variants and VLAN implementations. There were configuration questions on these protocols.
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Noel

2 months ago
Made it through HCIP-Datacom-Core! Big thanks to Pass4Success for providing such accurate practice questions.
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Dominque

3 months ago
Network virtualization was a key topic. Study NFV concepts and benefits. The exam had questions on virtualizing network functions.
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Willard

3 months ago
SDN and programmability questions were included. Familiarize yourself with OpenFlow and NETCONF. There were conceptual questions on SDN architecture.
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India

3 months ago
HCIP-Datacom-Core certified! Pass4Success's exam questions were spot-on. Grateful for the efficient prep materials.
upvoted 0 times
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Myra

3 months ago
Just passed the Huawei HCIP-Datacom-Core Technology V1.0 exam. One difficult question was about the differences between EIGRP and OSPF routing protocols. I was unsure about the specific metrics, but Pass4Success practice questions were a lifesaver.
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Kate

4 months ago
Multicast routing was covered extensively. Know PIM modes and IGMP versions. The exam had troubleshooting scenarios for multicast issues.
upvoted 0 times
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France

4 months ago
VXLAN concepts were tested. Understand VXLAN packet format and use cases. There were scenario-based questions on VXLAN implementations.
upvoted 0 times
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Jenise

4 months ago
Passed HCIP-Datacom-Core on my first try! Pass4Success's relevant questions made all the difference in my short study time.
upvoted 0 times
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Ressie

4 months ago
I passed the HCIP-Datacom-Core Technology V1.0 exam! There was a challenging question on the OSI model layers in data communication fundamentals. I hesitated on the functions of each layer, but the practice questions from Pass4Success were spot on.
upvoted 0 times
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Mirta

5 months ago
IS-IS routing protocol questions caught me off-guard. Study IS-IS levels and area types. Pass4Success materials were spot-on for this topic!
upvoted 0 times
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Merilyn

5 months ago
Cleared the Huawei HCIP-Datacom-Core Technology V1.0 exam. A tricky question was on diagnosing network issues using ping and traceroute. I wasn't sure about interpreting the results, but Pass4Success practice questions were very helpful.
upvoted 0 times
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Floyd

5 months ago
HCIP-Datacom-Core success! Couldn't have done it without Pass4Success. Their questions were key to my rapid preparation.
upvoted 0 times
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Goldie

5 months ago
Network security was emphasized. Know ACLs, AAA, and IPSec concepts. The exam tested practical application of these security measures.
upvoted 0 times
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Tamesha

5 months ago
I passed the HCIP-Datacom-Core Technology V1.0 exam! One question that puzzled me was about implementing firewall rules for network security. I was uncertain about the priority of rules, but the practice questions from Pass4Success were a great resource.
upvoted 0 times
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Celeste

6 months ago
QoS mechanisms were important. Understand DiffServ, IntServ, and traffic shaping techniques. There were configuration-based questions on QoS.
upvoted 0 times
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Allene

6 months ago
Just got through the Huawei HCIP-Datacom-Core Technology V1.0 exam. There was a tough question on VLAN configuration in switching technologies. I wasn't sure about the exact command syntax, but Pass4Success practice questions helped me prepare.
upvoted 0 times
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Shay

6 months ago
Cleared HCIP-Datacom-Core today! Pass4Success questions were incredibly similar to the real thing. Highly recommend!
upvoted 0 times
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Christoper

6 months ago
IPv6 transition technologies were surprising. Brush up on 6to4, ISATAP, and dual-stack implementations. The exam had practical questions on this.
upvoted 0 times
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Donette

6 months ago
I successfully passed the HCIP-Datacom-Core Technology V1.0 exam. A question that caught me off guard was about the BGP path selection process. I wasn't confident about the order of attributes, but the practice questions from Pass4Success were invaluable.
upvoted 0 times
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Nidia

7 months ago
MPLS concepts were heavily tested. Know Label Distribution Protocol (LDP) operations and MPLS VPN configurations. Pass4Success really helped me grasp these topics quickly!
upvoted 0 times
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Xuan

7 months ago
Passed the Huawei HCIP-Datacom-Core Technology V1.0 exam! One challenging question was about the differences between TCP and UDP in data communication fundamentals. I hesitated on the specifics, but the practice questions from Pass4Success guided me well.
upvoted 0 times
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Veta

7 months ago
Phew, HCIP-Datacom-Core was tough but I made it! Pass4Success materials were a lifesaver for quick prep.
upvoted 0 times
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Junita

7 months ago
BGP was a major focus. Study path attributes and route selection process. The exam had scenario-based questions on BGP peer relationships.
upvoted 0 times
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Gladys

7 months ago
Just cleared the HCIP-Datacom-Core Technology V1.0 exam! There was a tricky question on troubleshooting OSPF neighbor relationships. I was unsure about the exact command to verify the state, but the practice questions from Pass4Success were a huge help.
upvoted 0 times
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Jonell

8 months ago
Just passed the HCIP-Datacom-Core exam! The OSPF questions were tricky. Make sure you understand area types and LSA flooding. Thanks Pass4Success for the great prep material!
upvoted 0 times
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Gregg

8 months ago
I recently passed the Huawei HCIP-Datacom-Core Technology V1.0 exam, and it was quite a journey. One question that stumped me was about configuring ACLs for network security. I wasn't entirely sure about the correct sequence of rules, but thanks to Pass4Success practice questions, I managed to get through.
upvoted 0 times
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Benedict

8 months ago
Just passed the HCIP-Datacom-Core exam! Thanks Pass4Success for the spot-on practice questions. Saved me so much time!
upvoted 0 times
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Marva

10 months ago
Just passed the HCIP-Datacom-Core exam! OSPF configuration was a key focus. Expect questions on area types and LSA generation. Study multi-area OSPF thoroughly. Thanks to Pass4Success for the spot-on practice questions that helped me prepare quickly!
upvoted 0 times
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Free Huawei H12-821_V1.0 Exam Actual Questions

Note: Premium Questions for H12-821_V1.0 were last updated On Apr. 24, 2025 (see below)

Question #1

IGMP has three versions. Different versions support different features. Which of the following features is supported by all versions?

Reveal Solution Hide Solution
Correct Answer: C

Comprehensive and Detailed Step-by-Step

Overview of IGMP Versions:

IGMPv1: The simplest version, supports basic group membership management using Report messages but lacks Leave messages.

IGMPv2: Adds features like Leave messages and Group-Specific Queries.

IGMPv3: Supports specifying multicast sources for Source-Specific Multicast (SSM).

Feature Supported by All Versions:

Report messages are fundamental to IGMP functionality and are supported in all three versions.

Features Not Supported by All Versions:

Group-Specific Queries (A): Supported in IGMPv2 and IGMPv3.

Leave Messages (B): Introduced in IGMPv2.

Specifying Multicast Sources (D): Introduced in IGMPv3.


HCIA-Datacom Study Guide, Chapter: IGMP Overview

Huawei Multicast Protocol Details

Question #2

BGP is generally applied to complex networks where routes change frequently. Frequent route flapping consumes a large number of bandwidth and CPU resources, and even affects the normal operation of the network. This is an unavoidable problem that cannot be solved in BGP.

Reveal Solution Hide Solution
Correct Answer: B

BGP Route Flapping and Mitigation

While route flapping is a concern in large-scale networks, BGP employs mechanisms such as Route Dampening to mitigate its impact. Route dampening suppresses frequently flapping routes for a period of time to reduce resource consumption and network instability.

Therefore, it is incorrect to state that the issue cannot be resolved in BGP.

HCIP-Datacom-Core Reference

The mechanism of route dampening is detailed in the BGP optimization chapters.


Question #3

BFD provides fast fault detection independent of media and routing protocols. To use this mechanism to detect link connectivity, devices at both ends must support this feature.

Reveal Solution Hide Solution
Correct Answer: A

Comprehensive and Detailed Step-by-Step

Bidirectional Forwarding Detection (BFD):

BFD is a lightweight protocol that provides rapid fault detection on links independent of the underlying routing protocol or media.

Requirements for BFD:

Both devices at the endpoints of the link must support and configure BFD for it to operate.

If one device does not support BFD, the feature cannot be used for link detection.


HCIA-Datacom Study Guide, Chapter: BFD Overview

Huawei BFD Configuration Guidelines

Question #4

On an enterprise WLAN where Portal authentication is deployed, an AC functions as an access device and communicates with a Portal server using the Portal protocol. Which of the following statements are true about the Portal protocol?

Reveal Solution Hide Solution
Correct Answer: A, D

Comprehensive and Detailed Step-by-Step

Portal Authentication:

Portal authentication uses a web-based mechanism where clients are redirected to a login page.

Communication between the access device and Portal server uses HTTP or HTTPS protocols.

Correct Statements:

Option A: HTTP or HTTPS is used for Portal authentication.

Option D: Portal protocol packets are transmitted over TCP for reliable communication.

Incorrect Statements:

Option B: Port 2000 is not the default for processing Portal packets.

Option C: The default destination port for communication with the Portal server is not 50100.


HCIA-Datacom Study Guide, Chapter: WLAN Portal Authentication

Huawei WLAN Authentication Protocols

Question #5

When a packet passes through a firewall, the firewall creates a session connection for the packet to guide subsequent forwarding of the packet. However, the firewall does not create session entries for all packets. For which of the following packets does the firewall not create session entries when the packet reaches the firewall?

Reveal Solution Hide Solution
Correct Answer: C

Comprehensive and Detailed Step-by-Step

Session Creation in Firewalls:

Firewalls create session entries for packets requiring stateful inspection (e.g., TCP, UDP, ICMP, and GRE).

Subsequent fragments of large packets do not require new sessions. Instead, they are processed based on the session created for the first fragment.

Correct Option:

C (Subsequent Fragment): Does not trigger a new session entry as it belongs to an existing session.


HCIA-Datacom Study Guide, Chapter: Firewall Session Handling

Huawei Fragmentation Processing in Firewalls

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