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| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIP-Datacom-Core Technology V1.0 |
| Exam Number: | H12-821_V1.0 |
| Exam Duration: | 90 minutes |
| Related Certifications: | HCIP-Datacom-Advanced Routing & Switching HCIA-Datacom HCIE-Datacom |
| Real Exam Qty: | 60-80 (varies) |
| Exam Price: | USD 300 |
| Available Languages: | Japanese, Chinese, English |
| Passing Score: | 600/1000 |
| Certificate Validity Period: | 3 years |
| Exam Format: | True/False, Drag and drop, Multiple-choice questions, Short answer, Single-choice questions |
| Recommended Training: | Huawei Learning Portal - Datacom Track Huawei HCIP-Datacom Training Resources |
| Exam Registration: | Huawei Certification Official Portal Pearson VUE Huawei Exams |
| Sample Questions: | Huawei H12-821_V1.0 Sample Questions |
| Exam Way: | Computer-based exam (onsite test centers or online proctoring depending on region) |
| Pre Condition: | Recommended to hold HCIA-Datacom or equivalent networking knowledge |
| Official Syllabus URL: | https://certification.huawei.com/ |
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NEW QUESTION # 347
The filter-policy 2000 export command is run in an ISIS process. Which of the following statements about the functions of a filter policy is false?
Answer: D
Explanation:
The filter-policy command in IS-IS is used to control the advertisement and filtering of routing information. However, it does not directly filter LSPs (Link State Packets); instead, it controls route advertisements. The false statement here is that it filters LSPs.
NEW QUESTION # 348
The BFD Echo function checks the connectivity of the forwarding link by looping back packets. Which of the following statements are true about this function?
Answer: A,B
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. What is the BFD Echo Function?
* BFD (Bidirectional Forwarding Detection) is used to detect link failures.
* The Echo function is an optional feature that tests link connectivity by looping back packets sent from the local device through the forwarding path.
2. Analysis of Each Statement:
Option A: If URPF is enabled on the peer end, BFD packets may be incorrectly discarded on the peer end.
* Correct.
* URPF (Unicast Reverse Path Forwarding) checks whether the source IP address of an incoming packet is reachable via the interface it was received on. Since the Echo function uses loopback packets, this can conflict with URPF, causing the packets to be dropped.
Option B: In the BFD Echo function, the device uses the IP address of the outbound interface as the source IP address by default.
* Correct.
* By default, the outbound interface's IP address is used as the source address for BFD Echo packets.
Option C: The BFD Echo function applies only to single-hop BFD sessions.
* Incorrect.
* The BFD Echo function can be used for both single-hop and multi-hop BFD sessions.
Option D: When configuring a BFD session supporting the BFD Echo function, you need to configure both the local and remote discriminators.
* Incorrect.
* The BFD Echo function is locally configured and does not require setting remote discriminators. The function operates independently of the remote device's configuration.
3. Summary:
* The correct statements are A and B.
NEW QUESTION # 349
GRE is a VPN technology that can implement packet transmission over heterogeneous networks. Which of the following statements are true about GRE?
Answer: B,D
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. What is GRE (Generic Routing Encapsulation)?
* GRE is a tunneling protocol that allows the encapsulation of various types of packets (e.g., IPv4, IPv6, multicast, etc.) to be transmitted over another protocol (e.g., IP).
* GRE is used to create point-to-point connections over heterogeneous networks.
2. Analysis of Each Option:
Option A: GRE is a Layer 2 VPN encapsulation technology.
* Incorrect.
* GRE operates at Layer 3 (Network Layer) and encapsulates Layer 3 packets. It is not a Layer 2 VPN encapsulation technology like MPLS or Ethernet-over-IP.
Option B: GRE enables encapsulated data packets to be transmitted over another network layer protocol, but cannot encapsulate multicast data.
* Incorrect.
* GRE supports the encapsulation and transmission of multicast data packets. This is one of its key features, making it suitable for protocols like OSPF and multicast applications.
Option C: GRE tunnels can work with IPsec to ensure the security of multicast services such as voice and video.
* Correct.
* GRE by itself does not provide encryption or security. However, GRE can work with IPsec to secure the encapsulated traffic, including multicast data, for services like voice and video.
Option D: GRE tunnels can extend the working range of network protocols with hop limits.
* Correct.
* GRE encapsulates packets, effectively resetting their hop limits and allowing protocols with limited hop counts (e.g., RIP) to work over larger networks.
3. Summary:
* The correct options are C and D.
NEW QUESTION # 350
Two level-1 routers in different areas can form neighbor relationships.
Answer: A
NEW QUESTION # 351
Which of the following message types does BGP include? (Multiple choice)
Answer: A,B,C
NEW QUESTION # 352
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