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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cloud Native Application Architecture Design | 30% | - Container and orchestration technology - Serverless architecture design and application scenarios - Microservice architecture design and practice
|
| Topic 2: Enterprise Application Architectures and Cloud Technologies | 5% | - Cloud service models and deployment models - Evolution of enterprise application architectures - Core characteristics and value of cloud computing |
| Topic 3: HUAWEI CLOUD Innovations and Solutions | 5% | - Industry solutions and best practices - Huawei Cloud ecosystem and tools - Emerging technologies integration (AI, Big Data, IoT) |
| Topic 4: HUAWEI CLOUD O&M Solution | 10% | - Cloud monitoring and alerting system - Log management and analysis - Fault diagnosis and recovery mechanism - Automated operation and maintenance |
| Topic 5: Cloud-based Architecture Design of Conventional Applications | 50% | - Application migration and transformation strategy - Cloud resource planning and design principles
|
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NEW QUESTION # 13
After a company migrates its workloads to the cloud, multiple cloud servers in a virtual private cloud (VPC) need Internet access. However, the EIPs associated with the cloud servers might be attacked. An engineer suggests adding multiple EIPs when configuring DNAT rules. If one EIP is attacked, the other EIPs can continue to provide services and keep operations running normally.
Answer: A
Explanation:
"SNAT translates private IP addresses into EIPs, allowing traffic from a private network to go out to the Internet."
[Related section] DNAT maps an incoming EIP/port to a destination server; multiple EIPs in an SNAT rule are the documented outbound availability option.
Huawei source: Training PDF pp. 169-171; official NAT guidance
Technical Deep Dive
The scenario describes private ECSs requiring outbound Internet access, which is a Source Network Address Translation (SNAT) problem. Huawei NAT gateways can use one or more EIPs in supported SNAT configurations. If a particular public address is blocked or attacked, alternative EIPs may preserve outbound connectivity, subject to service behavior and security controls. DNAT has a different purpose: it maps incoming traffic targeting a public EIP and port to a specified private server and port.
The statement explicitly recommends configuring multiple EIPs in DNAT rules as the documented availability strategy for general outbound access, so it is FALSE. The relevant documented technique is configuring multiple EIPs in SNAT rules. It is important not to infer that attaching more EIPs to DNAT automatically provides seamless inbound service failover. Incoming clients must use an address and port that resolve and route to an available service endpoint, and DNAT port mapping has its own uniqueness constraints.
For Internet-facing applications, robust availability may require ELB, health checks, DNS failover, DDoS protection and redundant backends. For outbound access, NAT gateway EIP pools, route correctness and the limits of the gateway should be monitored. Architects should also assess whether an EIP block is due to anti- DDoS blackholing; multiple EIPs are not a substitute for an appropriate traffic-mitigation service. The question intentionally uses DNAT where SNAT is needed, making B correct.
NEW QUESTION # 14
High availability is an important design characteristic. Which of the following is not related to high availability?
Answer: A
Explanation:
"HA is a system architecture capability that minimizes single points of failure and provides automatic failover, with the ultimate goal of delivering reliable, uninterrupted services."
[Supporting material] High availability addresses component-level failures; disaster recovery addresses site- level failures and RTO/RPO targets.
Huawei source: Training PDF p. 18
Technical Deep Dive
High availability minimizes interruption from individual component failures. Option A is related because Auto Scaling can maintain necessary application capacity and, when health management is properly integrated, can provision replacement instances. Option B is related because ELB distributes requests across available backends and can exclude unhealthy servers using health checks.
Option D is also related to service continuity. Disaster recovery and backup services protect against more serious events, potentially including a site outage. DR is not synonymous with high availability: HA generally handles component-level failures and automatic failover, while DR focuses on recovery after more extensive disruptions. Nevertheless, they are complementary resilience strategies. Option C , by contrast, specifies a higher network bandwidth upper limit. Bandwidth increases potential throughput; it does not introduce additional service instances, redundancy, healthy failover targets or automated recovery.
For example, upgrading an ECS from a one-Gbit/s to a five-Gbit/s link may reduce congestion during high traffic, but the application still fails if its only server is lost. A more suitable HA architecture distributes instances across availability zones, configures ELB health checks, uses appropriate Auto Scaling policies and implements data-layer redundancy. Architects should evaluate both network performance and resilience, but should not use bandwidth capacity as a substitute for fault tolerance. Thus C alone is unrelated to the HA mechanism specified.
NEW QUESTION # 15
The Anti-DDoS "black hole" indicates that a server or ECS is under an attack whose traffic exceeds what basic defense can handle. When this threshold is exceeded, the platform activates black-hole access and directs the attack traffic to the black hole for traffic scrubbing.
Answer: A
Explanation:
"A blackhole policy is used to block the Internet access of an on-premises or cloud server when its traffic exceeds a predefined defense threshold. When traffic to a cloud exceeds this threshold, Huawei Cloud triggers a blackhole to block Internet access. This prevents the attack from impacting other Huawei Cloud users and ensures the overall availability and stability of the Huawei Cloud infrastructure."
[Scrubbing is described separately as diversion of traffic to the cleaning center. ] Huawei source: Training PDF p. 361 Technical Deep Dive The statement confuses blackhole routing with DDoS traffic scrubbing. Huawei describes a blackhole policy as temporarily blocking Internet access to an attacked destination when traffic exceeds a predefined defense threshold. Its purpose is to protect the wider network and other tenants from excessive attack traffic, even though legitimate users may lose reachability to the affected service. This is not the same thing as forwarding traffic to a scrubbing center.
Scrubbing is a separate mitigation workflow. Traffic is diverted to a specialized defense platform, malicious packets are identified and filtered, and legitimate traffic is forwarded to the protected server where possible.
In that approach, the objective is to maintain service continuity while excluding damaging traffic. Blackholing deliberately drops or blocks traffic to prevent an attack from overwhelming infrastructure.
For example, an ECS associated with an EIP may become subject to a very large volumetric attack. If the attack exceeds the applicable defense capacity or blackhole threshold, the destination can be blackholed, rendering it unreachable until mitigation conditions change. A higher-capacity anti-DDoS solution can be required for more demanding protection targets. Architects should monitor attack traffic, peak bandwidth, scrubbing status, threshold policies and origin exposure. Blackhole events and scrubbing events must not be reported as equivalent outcomes. Because the claim specifically says that blackholing directs traffic for scrubbing, it is FALSE, option B.
NEW QUESTION # 16
Match each IoT-related cloud service to its description.
Answer:
Explanation:
Explanation:
"IoT Device Access (IoTDA) enables connectivity and management for numerous devices. It links physical devices to the cloud, gathers their data, and sends commands for remote control. By integrating with other cloud services, it accelerates the development of IoT solutions."
"A complete IoT solution consists of an IoT platform, devices, and applications."
[The ecosystem slide also lists IoT Edge and IoT Analytics; IoTDP is expanded in the acronym table as IoT Device Provisioning. ] Huawei source: Training PDF pp. 665-668; official IoT Analytics/IoTDP/Edge documentation Technical Deep Dive The four matches correspond to different stages of Huawei's IoT architecture. Description 1 is IoTA, option
D. IoT Analytics uses asset-based representations of devices and equipment to integrate telemetry, clean data, store it, analyze it and visualize operational patterns. This is suited to smart buildings, industrial monitoring and digital-twin analysis. Description 2 is IoTDA, option B. IoT Device Access connects large numbers of physical devices to the cloud, accepts telemetry, manages device identities and configurations and delivers supported remote commands.
Description 3 is IoT Edge, option C. Edge computing combines compute, storage, networking and application services close to the physical devices. It can reduce transmission latency and bandwidth requirements, and may continue local operations during temporary connectivity loss. Description 4 is IoTDP, option A. IoT Device Provisioning handles provisioning, connecting and moving devices among the appropriate IoT platform instances, including scenarios involving regions or different operational environments.
The original drag-and-drop screenshot includes the labels IoTDP, IoTDA, IoT Edge and IoTA. The matching order from top to bottom is D, B, C, A. The Huawei V3.5 slides directly explain IoTDA and illustrate IoT Edge and IoT Analytics in the wider ecosystem. The specialized IoTA and IoTDP descriptions are supplemented by official Huawei product documentation. For an end-to-end IoT solution, provisioning and connectivity establish the data path, edge nodes perform local processing where appropriate, and analytics converts telemetry into decisions. The matching is unique and technically well grounded.
Description
Correct selection
1
D - IoTA
2
B - IoTDA
3
C - IoT Edge
4
A - IoTDP
NEW QUESTION # 17
High availability is an important design characteristic. Which of the following is not related to high availability?
Answer: A
NEW QUESTION # 18
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