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Huawei H12-821_V1.0 certification exam consists of 60 questions that are divided into multiple-choice and scenario-based questions. H12-821_V1.0 exam duration is 90 minutes, and the passing score is 600 out of 1000 points. H12-821_V1.0 Exam is available in both English and Chinese languages and can be taken at any of the Huawei authorized testing centers worldwide.
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NEW QUESTION # 1177
The MAC address of a certain PC is 5489-98FB-65D8. The administrator wants this PC to obtain the specified IP address 192.168.1.11/24 from the DHCP server, so the command configured by the administrator should be?
Answer: D
NEW QUESTION # 1178
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,C
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.
TheEcho functionis 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 areAandB.
Reference:
Huawei HCIA-Datacom Study Guide, Chapter "BFD Echo Function Configuration."
NEW QUESTION # 1179
OSPF networks are classified into broadcast, P2P, P2MP, and NBMA networks. Which of the following types of networks use the default Hello time (30s)?
Answer: B,C
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Default OSPF Hello Timer:
* The OSPF Hello timer is used to send periodic Hello packets and maintain neighbor relationships.
* Default Hello timers:
* Broadcast and P2P: 10 seconds
* NBMA and P2MP: 30 seconds
* Network Types Using 30s Hello Time:
* P2MP (C): OSPF sends Hello packets every 30 seconds by default.
* NBMA (D): OSPF also uses 30 seconds for NBMA networks.
References:
* HCIA-Datacom Study Guide, Chapter: OSPF Network Types
* Huawei OSPF Timer Configuration
NEW QUESTION # 1180
Which of the following routing protocols support the default route through command configuration?
Answer: A,B,C
Explanation:
BGP, IS-IS, and OSPF support the configuration of default routes through specific command configurations.
For example, BGP uses the default-originate command, IS-IS uses a default-route-advertise method, and OSPF can advertise default routes using default-information originate. ICMP, however, is not a routing protocol and does not support this functionality .
NEW QUESTION # 1181
Recognized attributes in BGP are attributes that all BGP routers must recognize and be included in Update messages.
Answer: A
NEW QUESTION # 1182
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