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| Section | Objectives |
|---|---|
| Topic 1: Huawei Campus Network Products and Solutions | - Campus Network Product Portfolio
|
| Topic 2: Campus SD-WAN Planning and Design | - SD-WAN Solutions
|
| Topic 3: CloudCampus and Intelligent Campus Solutions | - CloudCampus Architecture
|
| Topic 4: Pre-sales Methodology and Solution Presentation | - Pre-sales Skills
|
| Topic 5: Campus Network Security Design | - Security Planning
|
| Topic 6: Campus WLAN Planning and Design | - WLAN Technologies
|
| Topic 7: Campus Network Solution Architecture and Design | - Enterprise Campus Network Architecture
|
| Topic 8: Industry Scenario Solution Design | - Industry-Oriented Campus Solutions
|
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NEW QUESTION # 49
What is the maximum number of access units supported by a central switch on a passive Ethernet network (PEN)?
Answer: A
Explanation:
A central switch in the relevant passive Ethernet network architecture supports a maximum of 48 access units.
The architecture replaces a conventional multi-layer access design with a centralized switch and distributed remote or access units. The access units function as extensions of the central switch's ports, simplifying device management, configuration, and topology maintenance.
Huawei's CloudEngine S5731-H fixed central-switch specification provides models with 24 or 48 hybrid optical-electrical downlink ports. The 48-port model can therefore directly manage up to 48 associated access or remote units under the design limits represented by this question. The same hybrid links can provide data transmission and remote PoE power, enabling access units to be installed closer to terminals without requiring conventional active aggregation equipment at every location.
The central switch automatically discovers the topology, while remote units behave as extended ports rather than independently managed switches. This reduces management nodes and simplifies a traditional three- layer network into a two-layer architecture. The larger values of 64, 72, and 96 exceed the supported maximum for the specified central-switch implementation. Therefore, option C is correct.
NEW QUESTION # 50
Which of the following deployment modes are supported by APs?
Answer: A,B,D
Explanation:
APs support barcode scanning through the CloudCampus APP, DHCP Option 148-based deployment, and deployment through Huawei's registration query center. With barcode scanning, the installer scans the AP's label using the CloudCampus APP. The application obtains information such as the electronic serial number and MAC address, associates the AP with the correct tenant and site, and allows the AP to register with iMaster NCE.
With DHCP Option 148, the DHCP server supplies the AP with its IP configuration and the IP address and port number of iMaster NCE. The AP changes to cloud-management mode and automatically initiates registration. Huawei lists AR routers, switches, and APs as supported devices for this mode.
The registration query center can also provide the controller address after the AP contacts Huawei's query service. It supports APs together with ARs, firewalls, and switches. Email-based deployment is primarily an SD-WAN CPE or AR-router ZTP method, not an AP deployment mode. Therefore, A, C, and D are correct.
NEW QUESTION # 51
Which solution can be used when users need to centrally control and manage Internet access traffic but do not have the required security-processing capability?
Answer: B
Explanation:
Professional security devices should be deployed at the headquarters or another centralized Internet-access site. Under centralized Internet access, branch Internet traffic is first carried through the SD-WAN overlay to the centralized gateway. The headquarters security infrastructure then performs access control and security inspection before forwarding the traffic to the Internet.
This approach is appropriate when branch CPEs lack sufficient processing capacity or advanced security functions. A centralized firewall or dedicated security platform can provide intrusion prevention, antivirus inspection, URL filtering, application control, content security, and unified logging. It also allows the enterprise to enforce one consistent security policy instead of maintaining separate advanced configurations at every branch.
Deploying advanced security capabilities on each CPE, as proposed in option C, is a distributed local- breakout design and does not satisfy the stated limitation concerning security-processing capability. Third- party cloud security services can be used in some site-to-cloud or secure Internet-access architectures, but they are not the intended headquarters-based centralized solution in this question.
Huawei explicitly states that centralized Internet traffic is diverted to the centralized access site and that the firewall function is deployed there to secure Internet services. Therefore, option D is correct.
NEW QUESTION # 52
The CNN-based application identification technology can identify both known and unknown applications.
Answer: B
Explanation:
The statement is true in the context of Huawei's AI-assisted application-identification architecture.
Conventional identification depends mainly on predefined signatures, fixed destination addresses, port numbers, protocol fields, DNS correlation, or deep packet inspection. Huawei's standard SD-WAN process uses Service Awareness and First-Packet Identification signature databases to identify and group application traffic. These mechanisms are effective for known applications but become less reliable when traffic is encrypted, applications change versions, or previously unseen applications appear.
A CNN-based classifier learns multidimensional traffic characteristics such as packet-length sequences, timing, direction, and flow behavior. It can classify traffic matching learned application patterns and, when implemented with open-set detection, recognize flows outside known classes as unknown or zero-day applications. Commercial-grade deep-learning traffic classification research demonstrates identification of known encrypted applications together with the handling of unknown zero-day applications.
This does not mean the system automatically assigns an exact commercial name to every unseen application.
It detects that the traffic does not match established classes so that it can be investigated, labelled, and incorporated into later model updates. Therefore, the statement is True.
NEW QUESTION # 53
Huawei provides an innovative technology that can maintain smooth video when traffic packet loss between enterprise branches reaches up to 20%. Which technology provides this capability?
Answer: A
Explanation:
A-FEC, or Adaptive Forward Error Correction, is the correct technology. It protects delay-sensitive traffic by adding calculated redundant packets to the original packet stream. If some original packets are lost during WAN transmission, the receiving edge device can reconstruct them using the surviving original and redundant packets rather than waiting for end-to-end retransmission.
The key distinction between ordinary FEC and A-FEC is adaptation. With A-FEC, the receiving device reports real-time packet-loss and continuous-loss information to the transmitting device through FEC acknowledgement messages. The transmitting edge then dynamically increases or decreases the redundancy ratio according to actual network conditions. This provides stronger recovery during severe loss while avoiding unnecessary bandwidth overhead when link quality improves. Huawei describes this feedback- controlled adjustment as a mechanism that can alleviate or eliminate the impact of packet loss.
IFIT and IPCA are primarily measurement and service-quality analysis technologies; they do not reconstruct lost video packets. Fixed FEC does not adapt its redundancy level as effectively to changing loss conditions.
Therefore, the technology intended for smooth video under packet loss of up to 20% is A-FEC.
NEW QUESTION # 54
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