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Huawei H12-821_V1.0 Exam Syllabus Topics:

SectionWeightObjectives
IPv63%- IPv6 addressing and routing
Routing Fundamentals3%- Network basics and routing principles
Network Service and Management2%- Network management basics
Multicast9%- IGMP and PIM concepts
IS-IS8%- IS-IS protocol fundamentals
Network Security9%- ACL and basic security mechanisms
Network Reliability8%- Redundancy and failover mechanisms
Large-scale WLAN Architecture6%- Enterprise WLAN deployment basics
Network Solution2%- Integrated network design scenarios
OSPF16%- OSPF areas and LSDB
- OSPF core concepts
Routing and Traffic Control10%- Policy-based routing
- Traffic engineering basics
Switching Technologies7%- VLAN and STP fundamentals
BGP17%- BGP policy and attributes
- BGP path selection

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q238-Q243):

NEW QUESTION # 238
The four routers run IS-IS and have established adjacency. The area numbers and router levels are marked in the figure. The link between R1 and R2 is a PPP link, and R2 is DIS.

Which of the following statements is correct? (Multiple choice)

Answer: B,C


NEW QUESTION # 239
Based on IGMP snooping, IGMP snooping proxy enables a switch to act as a substitute for an upstream Layer 3 device to send IGMP Query messages to downstream hosts, and also to act as a substitute for downstream hosts to send IGMP Report/Leave messages to an upstream device. As such, this function conserves bandwidth between the upstream device and the local device.

Answer: A

Explanation:
GMP Snooping Proxy
IGMP snooping proxy allows the switch to substitute for upstream Layer 3 devices and downstream hosts, reducing unnecessary bandwidth consumption by consolidating IGMP messages.


NEW QUESTION # 240
The OSPF neighbor table stores important entries maintained by OSPF. Which of the following statements are true about the entries?

Answer: B,C,D


NEW QUESTION # 241
On a WLAN, engineers can use the VLAN pool mechanism to assign access users to different VLANs, which helps reduce the number of broadcast domains and improve network performance. VLAN pools support two VLAN assignment algorithms: even and hash. Drag the advantages and disadvantages to the two algorithms.
(Token is reusable)

Answer:

Explanation:
Explanation of VLAN Pool Assignment Algorithms:
In WLANs, VLAN pools help reduce broadcast domains and improve network performance by distributing users across multiple VLANs. Two algorithms are used for VLAN assignment:
Even Assignment Algorithm:
* The number of users in each VLAN is even.
* This algorithm assigns users evenly across VLANs, ensuring a balanced distribution of users in each VLAN.
* When STAs go offline and online again, their VLANs and IP addresses may easily change.
* Since the assignment is based on maintaining even distribution, a device (STA) may not be assigned the same VLAN when it reconnects, leading to potential IP address changes.
Hash Assignment Algorithm:
* The number of users in each VLAN is uneven.
* The hash algorithm assigns users to VLANs based on a hash value (e.g., derived from the MAC address). This may result in an uneven distribution of users across VLANs.
* VLANs and IP addresses remain unchanged for STAs that go offline and online again.
* The hash algorithm ensures that a device reconnects to the same VLAN, preserving its IP address.
A screenshot of a computer Description automatically generated


NEW QUESTION # 242
Which of the following statements about the IS-IS protocol is wrong?

Answer: A


NEW QUESTION # 243
......

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