H13-811_V3.5 Exam Dumps - Huawei HCIA-Cloud Service Questions and Answers

Option A is correct . Huawei Cloud Elastic Load Balance provides several traffic-distribution algorithms, including weighted round robin, weighted least connections, and source IP hash for shared load balancers. When backend servers have equal weights under weighted round robin, they receive an equal proportion of requests, providing the even traffic distribution described in the question.

Auto Scaling and ELB are explicitly integrated. When an AS group is associated with a load balancer, Huawei Cloud automatically associates newly added ECS instances with the load balancer and removes the association when instances leave the AS group. Therefore, option C is false; administrators do not need to manually register each dynamically created instance one by one.

Option B is incorrect in this context because the load balancer and its AS resources operate within the applicable regional/VPC deployment architecture; a standard shared ELB is not a mechanism for arbitrary cross-region backend distribution. Option D is also false because detecting unhealthy instances depends upon an enabled health-check mechanism. Disabling health checking removes the basis for making that health determination.

Reference topics: Elastic Load Balance; Auto Scaling and ELB Integration; Backend Servers; Load Balancing Algorithms.

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Options A, B, and C are consistent with the fundamental characteristics and enabling technologies of cloud computing. Cloud platforms are designed to make resources elastic. Huawei Cloud Auto Scaling, for example, dynamically adds or removes ECS instances and adjusts related resources according to actual workload demand. Dynamic resource scaling is therefore a core practical capability of cloud computing.

On-demand deployment is also fundamental. Huawei Cloud's Cloud Adoption Framework explains that cloud resources can be provisioned, adjusted, and scaled rapidly without the traditional procurement and installation cycle associated with physical infrastructure. This allows organizations to create computing environments when needed and release them when demand decreases.

Virtualization is another important enabling technology. It allows physical computing resources to be abstracted, pooled, isolated, and efficiently shared among multiple workloads. Huawei Cloud specifically identifies virtualization and resource pooling as mechanisms that improve physical-resource utilization.

Option D is incorrect. A defining cloud characteristic is that the provider assumes responsibility for substantial portions of infrastructure construction and maintenance. The exact customer/provider boundary varies between IaaS, PaaS, and SaaS, but customers do not maintain all resources .

Reference topics: Cloud Computing Characteristics; Elasticity; On-Demand Provisioning; Virtualization; Shared Responsibility.

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The correct answer is D. Available. Huawei Cloud uses Cloud Backup and Recovery to create backups of EVS disks, and the source disk must be in an operational state that permits a consistent backup operation. Huawei's official CBR and EVS documentation states that EVS disk backups can be created when disks are in the Available or In-use state.

Of the states listed in this question, only Available qualifies. A disk in the Creating state has not completed provisioning. A disk in the Deleting state is being removed and cannot serve as a stable backup source. “Deletion failed” represents an exception condition requiring remediation rather than a valid backup state. Huawei's disk-status guidance instructs administrators to troubleshoot a disk in the Deletion failed state rather than perform normal storage operations on it.

An Available disk has completed creation, is not currently attached for active I/O, and is accessible for supported management operations. Huawei Cloud can therefore associate it with a disk backup vault and create a CBR backup.

Although In-use would also be supported if included among the options, it is absent here. Consequently, Available is the only valid selection.

Reference topics: EVS Disk States; CBR Cloud Disk Backup; Backup Prerequisites.

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The statement is TRUE, with an important implementation distinction. Huawei Cloud extended network interfaces provide flexible networking independently of the ECS primary network interface. An extended network interface can be associated with security groups that differ from those associated with the ECS's other interfaces. Huawei Cloud explicitly states that an extended network interface created through the console can be attached to an instance in the same VPC while using different security groups.

Huawei documentation additionally specifies that when an extended network interface is created through the appropriate API, it can be attached to an instance residing in a different VPC. Therefore, the broader proposition in the question—that an ECS and an extended interface can belong to different VPCs or security groups—is technically supported by Huawei Cloud.

For conventional console-based deployments, the normal architecture places the ECS's primary and extended interfaces in different subnets of the same VPC, with security rules independently assignable to individual interfaces. This provides traffic separation for service, management, internal, and external networks. The API capability extends this flexibility further.

Consequently, because Huawei officially supports both differentiated security-group association and cross-VPC attachment under the documented API scenario, the correct answer is TRUE.

Reference topics: Elastic Network Interfaces; Extension NICs; VPC Networking; Security Group Association.

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For the HCIA-Cloud Service V3.5 curriculum version , statements A, B, and C are correct . An ECS must be associated with a security group so that inbound and outbound network access can be controlled. If an account has no custom group, Huawei Cloud provides a default security group, and users can either use that default group or create and select another security group that matches the workload's security requirements.

The V3.5-era Huawei Cloud VPC documentation distinguishes security groups from network ACLs by stating that security groups provide allow rules , whereas network ACLs provide both allow and deny rules. This distinction is important because it appears repeatedly in the HCIA V3.5 networking curriculum.

Statement D is false. Huawei Cloud specifically permits administrators to modify existing rules or add rules to the default security group . The default group itself cannot normally be deleted, but that restriction does not make its inbound or outbound rules immutable. Huawei's default-security-group documentation explicitly distinguishes group deletion restrictions from rule modification permissions.

Reference topics: VPC Security Groups; ECS Network Configuration; Default Security Group; Security Group Rules.

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1 → B

2 → C

3 → A

The mappings follow Huawei Cloud's LTS architecture exactly. A log group is the fundamental management unit used by LTS to organize logs. Huawei defines a log group as the basic unit for managing logs; it can contain multiple log streams and is primarily an organizational container rather than the location from which individual log records are read or written.

A log stream is the basic unit for reading and writing log data. Different categories of logs can be stored in separate streams within the same group, which improves log classification, searching, analysis, and O & M management.

ICAgent is the collection component. Huawei explicitly describes ICAgent as a log collection tool for LTS that runs on hosts from which logs need to be collected, including ECSs and physical servers. LTS distributes collection configurations to ICAgent, and ICAgent detects matching log files and reports the records to the specified log stream.

Therefore, the correct relationship is Log stream → read/write; ICAgent → collection; Log group → management .

Reference topics: Log Tank Service; Log Groups; Log Streams; ICAgent; Host Log Collection.

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The statement is true in the context of the HCIA cloud-computing architecture model. Cloud computing evolved from developments in computing, distributed systems, virtualization, networking, and Internet technologies. Most importantly, cloud services are consumed remotely, making network connectivity an intrinsic part of service delivery.

Huawei Cloud defines cloud services as IT capabilities delivered by cloud providers through the Internet or dedicated networks . These services include compute, storage, networking, security, database, middleware, O & M, big data, and AI resources. Users obtain and consume those resources remotely rather than requiring the underlying physical infrastructure to reside locally.

This dependence is architectural rather than merely convenient. An ECS, database, object-storage bucket, SaaS application, or cloud management interface has practical value to a remote user only if network connectivity exists between the consumer and the cloud environment. A private connection can replace Internet access in certain enterprise architectures, but that is still network connectivity.

Accordingly, the intended HCIA principle is that cloud computing and networking are inseparable: network access forms the communication foundation through which cloud resources are delivered and consumed .

Reference topics: Cloud Computing Fundamentals; Network Access; Cloud Service Delivery; Internet and Dedicated Networks.

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Statements B and D are correct. Huawei Cloud CBR architecture consists fundamentally of backups, vaults, and policies. A vault is the storage container used by CBR for backup data. Huawei documentation explicitly states that CBR stores backups in vaults and that different resource categories are associated with appropriate vault types, such as server backup vaults and disk backup vaults.

Statement B is also directly supported. Huawei categorizes CBR policies into backup policies and replication policies. A backup policy automatically runs backup operations according to configured schedules and retention parameters, while a replication policy periodically replicates eligible backup data to another vault or region.

Statement A is incorrect because CBR is specifically designed to automate protection through policies; regular backups do not normally need to depend on repeated manual execution. Huawei advises using backup policies for scheduled protection.

Statement C is too absolute. CBR substantially improves recoverability against accidental deletion, malware, software failures, and hardware faults, but no backup architecture legitimately guarantees that data can never be lost under every conceivable condition.

Therefore, B and D are the verified statements.

Reference topics: CBR Architecture; Vault Management; Backup Policies; Replication Policies.

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Options B, C, and D identify problems that CDN architecture is designed to mitigate. Huawei defines CDN as an intelligent virtual network built on Internet infrastructure that caches origin content on geographically distributed points of presence close to users. This substantially shortens the network path between users and frequently requested resources.

Consequently, CDN improves download speed because users can retrieve cached files from a nearby edge PoP rather than repeatedly crossing long-distance networks to the origin server. It also addresses slow website access by accelerating static content delivery, reducing latency, and improving site response and availability. Huawei specifically states that CDN breaks through bottlenecks associated with limited bandwidth, high access traffic, and uneven network-node distribution.

Caching popular content at edge nodes also reduces repeated traffic flowing through core and backbone networks. This alleviates bandwidth pressure on both the origin infrastructure and long-distance network paths.

Option A is not a CDN problem statement. CDN commonly reduces origin-server load , meaning utilization of origin resources may decrease rather than fixing a problem described as “low server utilization.” Its purpose is acceleration and traffic offloading, not increasing server utilization.

Therefore, B, C, and D are correct.

Reference topics: Content Delivery Network; Edge Caching; Website Acceleration; Download Acceleration; Origin Traffic Reduction.

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The correct advantages are B, C, and D. Huawei Cloud EVS provides a range of disk specifications and performance classes so customers can select storage appropriate for different workloads and budgets. Huawei's EVS overview explicitly lists various disk types and high security/reliability among its principal benefits.

EVS is also easier to manage than traditional physical storage. Huawei documentation comparing EVS with traditional hard disks states that EVS disks provide higher reliability and I/O throughput and are easier to use. Cloud-based provisioning eliminates much of the physical installation, replacement, cabling, and capacity-management work associated with conventional disks.

Option A is incorrect. EVS is block storage intended for cloud servers and cannot be used independently. Huawei explicitly states that EVS disks must first be attached to a supported server and then initialized, partitioned, and formatted before applications can persist data on them.

High reliability derives from distributed storage and data-protection mechanisms, while the range of available disk classes enables workload-specific performance selection.

Therefore, various disk types, ease of use, and high reliability are advantages; independent use is not.

Reference topics: EVS Advantages; Block Storage; EVS Reliability; EVS Disk Types.

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