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| Section | Objectives |
|---|---|
| Topic 1: Huawei Cloud Innovations and Solutions | - Emerging architecture solution practices - Innovative services overview (EI, IoT, data solutions) |
| Topic 2: Huawei Cloud O&M Solution | - Monitoring, logging, and operational best practices - O&M strategies and Huawei Cloud operations tools |
| Topic 3: Cloud Native Application Architecture Design | - Container and serverless design patterns - Huawei cloud native services and solutions - Cloud native technologies and microservices design |
| Topic 4: Cloud-based Architecture Design of Conventional Applications | - Network design and Virtual Private Cloud (VPC) - Compute service planning and Elastic Cloud Server (ECS) - Cloud security service planning and design - Database service planning and migration - Storage and Object Storage Service (OBS) |
| Topic 5: Enterprise Application Architectures and Cloud Technologies | - Cloud technology concepts and Huawei Cloud overview - Enterprise application architectures fundamentals |
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NEW QUESTION # 49
A Kubernetes cluster is made up of master nodes and worker nodes. A master node manages the whole cluster. Which of the following components run on a master node?
Select all that apply.
Answer: B,C
Explanation:
"A master node is the machine where the control plane components run, including API server, scheduler, controller manager, and etcd. In a production environment, multiple master nodes are deployed to ensure high cluster availability."
"A worker node is a compute node for running containerized applications in a cluster. Kubelet, kube-proxy, and container runtime are running on each worker node." Huawei source: Training PDF p. 415 Technical Deep Dive Huawei's Kubernetes architecture places the API server, scheduler, controller manager and etcd in the control plane. Option A is correct because kube-apiserver exposes the Kubernetes API and receives administrative and controller requests. Option D is correct because the scheduler chooses suitable nodes for pending pods based on available capacity and scheduling constraints.
Option B , Docker, is not a Kubernetes control-plane component. Docker is a container platform/runtime technology. Modern Kubernetes typically uses a compatible container runtime such as containerd, and the runtime is associated with workload execution rather than the API/scheduling control functions. Option C , kubelet, is primarily described by Huawei's diagram as a worker-node agent that manages containers and pods according to control-plane instructions.
There is a technical ambiguity: real Kubernetes control-plane hosts can also run kubelet to manage static pods and other node-local components. Therefore it would be inaccurate to claim kubelet never runs on a master.
The examination should ask which are control-plane components instead of which components merely run on a master host. Production Kubernetes commonly uses multiple control-plane nodes to avoid a single point of management failure, though application availability also depends on workers and data services. Useful validation commands include kubectl get nodes -o wide, kubectl cluster-info and kubectl get pods -n kube- system. Under the course's architectural classification, A and D are the defensible answers.
Technical commands / calculations from the reviewed batch
kubectl get nodes -o wide
kubectl get pods -n kube-system
kubectl cluster-info
NEW QUESTION # 50
A grayscale release is an important approach for secure software rollout or iteration. Which of the following statements about grayscale releases is incorrect?
Answer: A
Explanation:
"Canary release is also called grayscale release. It is a smooth iteration mode for version upgrade. During the upgrade, some users use the new version, while other users continue to use the old version. After the new version is stable and ready, it gradually takes over all the live traffic."
"Grayscale version: Only one grayscale version can be released for a service. You can configure grayscale policies for the version."
[The slide also identifies ratio-based and content-based traffic policies. ] Huawei source: Training PDF pp. 530, 532 Technical Deep Dive Grayscale or canary release gradually introduces a new application version to a selected portion of users or requests while the old version continues to serve the remainder. Option B accurately describes ratio-based traffic routing. For example, 75 percent of traffic can remain on the current version while 25 percent goes to the grayscale version; that share can be increased if health and business metrics remain acceptable. Option C matches Huawei V3.5's specific model, which describes a single active grayscale version per service and configurable policies for it.
Option A describes content-based routing: traffic can be selected by cookies, custom HTTP headers, query parameters, browser characteristics or operating systems. It is correct only in the context of that particular policy type; traffic-ratio policies do not require such conditions. The question should make that scope explicit to avoid an overly universal interpretation.
Option D is the intended false statement. Grayscale deployments are not reserved for major software versions. They are useful for minor fixes, security changes, performance improvements and major functional releases alike. A/B testing and blue-green deployment are separate rollout strategies, not exclusive recommendations for minor upgrades. Engineers should monitor error rates, request latency, throughput, user experience and dependency behavior as the percentage changes. Rollback policies and database schema compatibility are also important. Huawei's V3.5 material states that grayscale release minimizes risk by introducing the new version progressively. Therefore D is the incorrect assertion, with a wording qualification on A.
NEW QUESTION # 51
Data Replication Service (DRS) is an easy-to-use, stable, and efficient cloud service for online database migration and real-time database synchronization. Which of the following functions does DRS support?
Select all that apply.
Answer: A,B,C
Explanation:
"DRS simplifies data transmission between cloud databases and effectively reduces data transmission costs.
You can use DRS to migrate data between databases quickly to meet your service requirements."
"DRS provides multiple functions, including real-time migration, backup migration, real-time synchronization, data subscription, real-time disaster recovery, and workload replay." Huawei source: Training PDF p. 324 Technical Deep Dive Huawei Data Replication Service (DRS) supports several named database data-movement functions. Option A
, real-time disaster recovery, is correct because supported deployments can continuously synchronize database changes to a recovery destination. Option B , real-time migration, is correct because DRS can transfer databases while the source continues serving workloads, with appropriate final cutover controls. Option D , backup migration, is correct because a supported backup can be exported and uploaded to OBS or another supported location and restored to a destination database through the DRS workflow.
Option C is not a separate named DRS function in the Huawei V3.5 list. 'Asynchronous migration' may refer informally to underlying data-transfer behavior, but the official product categories include real-time migration, backup migration, real-time synchronization, data subscription, real-time disaster recovery and workload replay. An implementation technique must not be mistaken for an independently listed feature.
Production database migration involves pre-checking source and target engine versions, establishing network and security access, configuring appropriate accounts, verifying schema compatibility, tracking full-load transfer, monitoring incremental replication and validating final consistency. Real-time DR requires distinct recovery procedures and testing to ensure that a standby database can serve the workload after failure.
Workload replay is another DRS capability that can simulate source database activity on a target for compatibility or performance assessment. Architects should not conflate these modes or assume any engine can migrate to every destination. The official taxonomy directly supports A, B and D.
NEW QUESTION # 52
Each EIP can be associated with only one cloud resource at a time, and the EIP and that resource must be in the same Region.
Answer: A
Explanation:
"An EIP and its bound cloud resource must be in the same region."
[Supporting description] One EIP can be associated with only one supported cloud resource at a time; global EIP has different association capabilities.
Huawei source: Training PDF p. 159
Technical Deep Dive
Huawei's standard Elastic IP is an independently allocated public IPv4 address that can be associated with a supported cloud resource. It can be bound to only one such resource at a time, and the resource and EIP must be in the same region. The statement is therefore TRUE, option A.
Examples of supported EIP association targets include eligible ECS network interfaces, load balancers, virtual IPs and NAT gateways, depending on the product and deployment mode. If an EIP is bound to ECS-A, it cannot be directly bound to ECS-B simultaneously; the original association must be removed first. Likewise, an EIP allocated in one region cannot be directly assigned to an ECS in another region under the ordinary EIP model.
This must be distinguished from public IP sharing through NAT. A gateway may use one associated EIP to provide Internet connectivity for many private servers, but the EIP remains associated with a single gateway resource rather than many ECSs. Global EIP is a different product with cross-region design capabilities.
During solution planning, verify region, bandwidth billing, whether the target resource supports the association, failover strategy and routing. Moving an EIP during a failure can alter traffic paths, but it does not by itself ensure application readiness or database consistency. The course's wording applies to normal EIPs and is accurate.
NEW QUESTION # 53
When you create a cluster in Cloud Container Engine (CCE), which of the following container network models can you select?
Select all that apply.
Answer: C,D
Explanation:
"CCE supports the following container network models: container tunnel network, VPC network, and Cloud Native Network 2.0."
"The container tunnel network is constructed on but independent of the node network through tunnel encapsulation. This network model uses VXLAN to encapsulate Ethernet packets into UDP packets and transmits them in tunnels. Open vSwitch serves as the backend virtual switch." Huawei source: Training PDF pp. 456-457 Technical Deep Dive Huawei Cloud CCE supports three container-network models in the V3.5 course: container tunnel network, VPC network and Cloud Native Network 2.0. Option B is correct because the tunnel model uses encapsulation-VXLAN over UDP in the documented implementation-to carry pod traffic across an underlying node network. Open vSwitch acts as a virtual switching component in the tunnel architecture.
Option D is correct because Cloud Native Network 2.0 integrates pod networking with VPC resources. Pod IP addresses can be allocated from the VPC CIDR range, using the applicable enhanced networking and network-interface mechanisms. This reduces encapsulation overhead and supports demanding throughput and latency requirements. Option A is incorrect because a VPN is a service for encrypted connectivity between separate networks, not a named CCE pod-network model. Option C is incorrect because the Kubernetes Service network allocates virtual addresses for Service access; it does not describe the underlying pod- network implementation selected when creating the cluster.
The omitted third legitimate model is VPC network. The question does not offer that option, but its absence does not make the listed choices ambiguous. Architects should select networking based on throughput, latency, IP consumption, integration with security groups, number of nodes and workload scale. Networking performance also depends on underlying ECS specifications and routes. Check container and service CIDRs carefully to avoid overlap with existing VPC or on-premises ranges. Huawei's official model list supports B and D.
NEW QUESTION # 54
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