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Huawei H12-811_V2.0 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Network Security and Services: Covers essential network security mechanisms including ACLs, AAA, NAT, and basic firewall concepts to protect network infrastructure.
Topic 2
  • Typical Campus Networking Solution: Covers end-to-end campus network design scenarios, integrating switching, routing, security, and wireless technologies into a unified solution.
Topic 3
  • Ethernet Technology Basics: Covers Ethernet standards, switching principles, VLANs, and Layer 2 protocols used in enterprise network environments.
Topic 4
  • Data Communication Network Basics: Covers foundational concepts of data communication networks including network types, reference models (OSI
  • TCP-IP), and basic device roles.
Topic 5
  • IP Technology Basics: Covers IPv4
  • IPv6 addressing, subnetting, routing fundamentals, and common routing protocols such as OSPF, RIP, and static routing.
Topic 6
  • Data Center Network Basics: Covers the architecture and key technologies used in modern data center networks including virtualization and high-availability design concepts.
Topic 7
  • Network O&M and Troubleshooting: Covers network operation and maintenance practices, common diagnostic tools, and methodologies for identifying and resolving network faults.

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Huawei HCIA-Datacom V2.0 Sample Questions (Q12-Q17):

NEW QUESTION # 12
Network administrators need to manage and maintain devices on the campus network. Which of the following protocols cannot modify device configurations, such as interface IP addresses, device names, and so on?

Answer: D

Explanation:
The protocol that cannot directly modify device configurations such as interface IP addresses or device names is SFTP, so option C is correct. SFTP is a secure file transfer protocol that runs over SSH and is mainly used to upload, download, and manage files between a client and a network device. It is commonly used for tasks such as transferring configuration files, system software, patches, or log files, but it does not itself provide an interactive or structured configuration modification mechanism.


NEW QUESTION # 13
Rl has the following configurations:
[R1] aaa
[R1-aaa] authentication-scheme auth1
[R1-aaa-authen-authl] authentication-mode radius local
[R1-aaa-authen-authl] quit
According to the preceding information. Assume that R1 is properly connected to the RADIUS server. When a user accesses R1, R1 first performs RADIUS authentication on the user. If the RADIUS server sends an authentication failure message to R1, R1 then performs local authentication on the user.

Answer: A

Explanation:
The authentication-mode radius local configuration defines an authentication sequence in which RADIUS is attempted first and local authentication is used as a fallback under the conditions defined by Huawei AAA processing. A critical distinction exists between a RADIUS service being unavailable and a RADIUS server explicitly rejecting the credentials. If the RADIUS server is unreachable, times out, or otherwise cannot perform the authentication service, local authentication may be used as the backup method. However, when the device successfully contacts the RADIUS server and receives an explicit authentication failure or Access- Reject response, that is a definitive authentication result rather than a server-unavailable condition. The device does not simply bypass the rejection and retry the same user against the local database, because doing so would undermine centralized authentication policy. The question explicitly states that R1 is properly connected to the RADIUS server and that the server sends an authentication failure message. Therefore, the claimed fallback to local authentication does not occur in this situation. The statement is FALSE and option B is correct.


NEW QUESTION # 14
When source NAT is configured on an enterprise egress device, which of the following may prevent intranet users from accessing the public network?

Answer: A,B,C

Explanation:
The uploaded key includes all four options, but option B is not a valid requirement for normal source NAT and should be removed. Source NAT translates the private source address of outbound traffic into a public address before the packet enters the public network. The public-side router therefore needs reachability to the translated public address for return traffic, not a route to the original private intranet address. By contrast, A can prevent access if NAT is not applied on the proper outbound interface or direction. C can also prevent translation when the configured address pool has no usable address available, depending on the NAT mode and session requirements. D is valid because traffic whose source address does not match the NAT policy or referenced ACL will not be translated; private-source packets then normally cannot traverse the Internet as intended. Routing on the enterprise egress device must of course also be correct, but the specific absence described in B is not inherently a failure when source NAT is working. The verified selections are A, C, and D.


NEW QUESTION # 15
IEEE 802.11 is the standard for WLANs. Which of the following 802.11 protocols uses 1024-QAM modulation?

Answer: D

Explanation:
The correct answer is 802.11ac, so option C is correct. In standard WLAN evolution knowledge used in HCIA-Datacom, 802.11ac is associated with the introduction of 256-QAM and 1024-QAM- related higher-order modulation knowledge points in many training and exam materials, while
802.11ax and 802.11be are emphasized more for newer enhancements such as OFDMA, higher efficiency, multi- user performance, and later very-high-order modulation developments depending on the exact curriculum version.
From the perspective of exam-oriented Huawei Datacom learning, the accepted answer for this question is 802.11ac.


NEW QUESTION # 16
When a switch receives a unicast data frame, if the destination MAC address of the data frame can be found in the MAC address table of the switch, the data frame is definitely forwarded through the port corresponding to the MAC address.

Answer: A

Explanation:
While a switch will typically forward a unicast frame based on its MAC address table, certain scenarios like port security or VLAN restrictions may prevent the frame from being forwarded even if a MAC entry exists.


NEW QUESTION # 17
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