Huawei H13-811_V3.5 HCIA-Cloud Service V3.5 Exam Practice Test

The statement is TRUE . Huawei Cloud makes an explicit architectural distinction between Elastic Cloud Servers and Bare Metal Servers regarding the underlying compute resources. An ECS is a virtualized compute instance. Multiple ECS instances can therefore consume resources provided by the same underlying physical host, with virtualization providing logical isolation between tenants and workloads.

A BMS, by contrast, provides exclusive access to physical compute resources. Huawei Cloud states directly that BMS users can exclusively access physical resources, whereas ECS users share those physical resources. This makes BMS particularly suitable for mission-critical systems, big-data clusters, enterprise middleware, high-performance workloads, and applications that require predictable performance or direct access to physical CPU and memory resources.

Huawei's BMS comparison also identifies Exclusive resources = Yes for BMS and traditional physical servers, but No for ECS. BMS additionally provides cloud characteristics such as automatic provisioning, VPC integration, image-based deployment, monitoring, and cloud storage while retaining physical-server performance.

Therefore, the differentiation presented in the question is technically accurate.

Reference topics: Bare Metal Server Fundamentals; BMS versus ECS; ECS Virtualization; Exclusive Physical Resources.

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Option B is incorrect . Huawei Cloud explicitly requires subnet CIDR blocks within the same VPC to be unique and not overlap . Allowing overlapping subnets would make local route selection ambiguous and create address conflicts inside the VPC. Huawei's subnet definition therefore states that subnets in a VPC cannot overlap with each other.

Option A is correct for subnet planning: Huawei advises users to plan subnet address ranges carefully because a subnet's CIDR block cannot be changed after creation. This is why future capacity requirements should be considered before allocating subnet prefixes.

Option C is also consistent with Huawei's VPC definition. A subnet represents a unique CIDR block containing an IP address range inside a VPC, and VPC resources requiring private networking are deployed into these subnets. Option D is correct because the subnet CIDR must fall within the VPC's address range. Huawei's network-planning guidance explicitly states that the subnet CIDR block must be within the VPC CIDR block and that subnet CIDR blocks in the VPC must be unique.

Thus, the only incorrect planning statement is B .

Reference topics: VPC and Subnet Planning; CIDR Blocks; Subnet Addressing; VPC Network Design.

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Option A is incorrect because Huawei Cloud Auto Scaling is designed to automatically adjust ECS instances and bandwidth resources , not Bare Metal Server instances. Huawei's AS documentation defines an AS group as a collection of ECS instances and states that scaling actions add or remove ECS instances according to alarm, scheduled, or periodic policies. BMS provides dedicated physical compute and is provisioned through the BMS service rather than being dynamically created and destroyed by an ECS Auto Scaling group.

The other relationships are valid. Cloud Eye supports BMS operating-system monitoring after the Cloud Eye Agent is installed; the BMS reports detailed CPU, memory, disk, and network metrics to Cloud Eye. EVS is integrated with BMS and additional supported EVS data disks can be attached when more storage is required. IMS is likewise an integral BMS service: images can be used to create consistently configured BMSs and to reinstall or change their operating systems, reducing repetitive deployment work. Huawei's BMS architecture explicitly lists VPC, IMS, EVS, Cloud Eye, and backup services as integrations supporting BMS operation.

Reference topics: Bare Metal Server Architecture; BMS and Other Cloud Services; Auto Scaling; Cloud Eye; IMS; EVS.

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Statements B and C are correct . Huawei Cloud Eye supports batch creation of monitoring alarms. Huawei's documented quota specifically states that up to 50 monitored objects can be selected when creating an alarm rule and that up to 1,000 alarm rules can be created at one time . Huawei even provides the exact example used here: 50 monitored objects multiplied by 20 metrics produces 1,000 alarm rules. Therefore, B is directly supported.

Statement C is also valid. Cloud Eye alarm rules can provide monitoring triggers used with Auto Scaling. An alarm-based AS policy references a Cloud Eye alarm rule; when monitored metrics meet the configured threshold condition, the corresponding scaling action can be initiated.

Statement A is false because Cloud Eye server monitoring is not limited to OS-level resource metrics. With the Agent installed, Huawei Cloud Eye also provides process monitoring , including process CPU usage, memory usage, opened files, and customized process-monitoring tasks.

Statement D is false because alarm templates and batch alarm creation eliminate the requirement to create every alarm rule individually.

Reference topics: Cloud Eye Server Monitoring; Process Monitoring; Alarm Rules; Alarm Templates; Auto Scaling Integration.

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Huawei Cloud establishes a clear parent-child relationship between a Huawei Cloud account and the IAM users created under that account. The account owns the cloud resources and is the billing entity , whereas IAM users consume or manage resources according to permissions assigned by the account administrator.

Therefore, option C is correct: IAM users do not independently pay for the resources they use. Charges generated through their authorized operations are billed to the parent account. Options B and D are also correct because the account administrator retains authorization control and can modify or revoke permissions assigned to IAM users.

Option A is incorrect because it incorrectly treats the IAM user as a payment entity. Authorization determines what an IAM user is permitted to access or operate , not who is responsible for payment. Huawei Cloud explicitly distinguishes resource ownership and billing from delegated resource access. An IAM user does not receive an independent bill merely because access to a resource has been authorized.

Accordingly, the correct relationship is: account owns and pays; IAM users operate resources according to delegated permissions; the account controls those permissions .

Reference topics: IAM Users; Huawei Cloud Accounts; IAM Authorization; Billing Responsibility.

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Scalable File Service (SFS) is the precise Huawei Cloud service for this workload. The wording in the question closely follows Huawei's official media processing application scenario for SFS. Huawei specifically lists streaming media, archiving, editing, transcoding, content distribution, and video on demand as representative media-processing workloads.

The decisive requirement is that multiple hosts must access the same media files concurrently. SFS provides shared file storage that can be mounted by multiple ECSs or other supported compute resources through standard file protocols. Applications then interact with the storage through normal directories and file-system semantics. This eliminates the need to redesign media-processing applications around object-storage APIs.

OBS is highly scalable and well suited to object storage, content distribution, archive, and VOD data, but applications access OBS through HTTP/HTTPS, APIs, or SDKs rather than through a conventional shared filesystem. EVS provides block storage and generally must be attached to a server; ordinary EVS is not the direct multi-host shared file-system solution. Huawei's storage-selection guidance identifies SFS specifically for media processing and file sharing.

Therefore, B. SFS best satisfies the shared-media workflow.

Reference topics: Scalable File Service; Media Processing; Shared File Storage; Storage Service Selection.

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The statement is TRUE because Huawei Cloud NAT Gateway includes both public NAT Gateway and private NAT Gateway functionality. These two service types cover the two network-translation scenarios described.

A public NAT Gateway performs translation between a private VPC network and the Internet. Through SNAT, servers with private IP addresses can share Elastic IP addresses to access public networks. Through DNAT, internal servers can provide externally accessible services using public addresses.

A private NAT Gateway performs address translation between private networks. Huawei Cloud describes private NAT gateways as enabling servers in a VPC to communicate with on-premises data centers or other VPCs while translating private addresses to transit IP addresses. This is particularly valuable during network migration, address-overlap resolution, and hybrid-cloud integration.

Huawei's official NAT Gateway comparison therefore states that a public NAT Gateway connects a private network to the Internet, whereas a private NAT Gateway connects private networks.

The statement deliberately describes the NAT Gateway service family rather than only public NAT. Since Huawei Cloud provides translation in both private-to-private and private-to-public architectures, the proposition is correct.

Reference topics: NAT Gateway; Public NAT Gateway; Private NAT Gateway; SNAT; DNAT.

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Option B is incorrect because Huawei Cloud OBS does not allow a bucket that has already had versioning enabled to return to the original Disabled state. Versioning can initially be enabled on a bucket, but once enabled, it can subsequently only be suspended , not disabled.

Option A is correct. With versioning enabled, OBS assigns unique version IDs to uploaded objects, allowing multiple objects with the same key or name to coexist as different versions. This protects against accidental overwrites and provides point-in-time recovery capabilities.

Option C is also correct when a specific historical version is permanently deleted. Each object version is independently identified by its version ID, so deleting one specified version does not inherently remove the other retained versions.

Option D accurately describes the initial state. Huawei states that versioning is disabled by default for newly created OBS buckets. When versioning has never been enabled, uploading a new object with the same name replaces the existing object instead of maintaining multiple historical versions.

The critical distinction is therefore Disabled versus Suspended . Disabled is the initial state; after versioning is enabled, it cannot be restored to Disabled.

Reference topics: OBS Versioning; Version IDs; Suspending Versioning; Object Recovery.

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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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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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Option D is incorrect . Huawei Cloud's official RDS for PostgreSQL constraints specify that a maximum of five read replicas can be created for one DB instance , not 15. Huawei's current read-replica documentation reiterates the same five-replica limit. The “15 read replicas” characteristic is associated with other Huawei database architectures, such as TaurusDB/GaussDB-related scaling designs, and must not be transferred to standard RDS for PostgreSQL.

Option C is directly supported by Huawei documentation. RDS for PostgreSQL is an object-relational database designed for complex OLTP and supports NoSQL and GIS data types. Huawei explicitly identifies websites, location-based applications, and complex data object processing as representative workloads.

Option B is also valid. Huawei Cloud provides real-time status and performance monitoring for RDS instances, exposing database-related metrics and allowing alarms to be configured for operational monitoring.

Option A reflects the managed-service security architecture: RDS provides controls involving network isolation, security groups, SSL, account authorization, backups, and other mechanisms to protect databases and user data.

The numerical scaling claim in D therefore makes it decisively incorrect.

Reference topics: RDS for PostgreSQL; Read Replicas; Database Monitoring; PostgreSQL Application Scenarios; RDS Security.

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Statement C is incorrect because container images do not require a private registry. Huawei Cloud container services can consume images from multiple sources, including Huawei Cloud SoftWare Repository for Container (SWR), public repositories, shared repositories, and supported third-party image repositories. Huawei Cloud CCI documentation explicitly states that containers can pull both SWR images and third-party images .

A container image is a standardized, executable package containing the files and configuration required for a containerized application. Huawei describes it as containing the application and required supporting components such as environments, libraries, configuration files, and file systems. This supports option A.

Option B is consistent with the container-image concept because images can contain a base operating-system environment or filesystem together with application dependencies and configuration required by the application.

Option D is also valid. An image acts as an immutable deployment template: once constructed, the same image can be instantiated repeatedly as containers, enabling applications to run with a consistent packaged environment rather than requiring the software stack to be manually reconfigured for every deployment.

A private registry is useful for controlling proprietary enterprise images, but it is an architectural choice—not a mandatory requirement. Therefore, C is the incorrect statement.

Reference topics: Container Images; SWR; Container Registries; CCI Image Sources; Containerized Application Deployment.

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Statement C is false because it gives the definition of a shared image rather than a private image. Huawei Cloud defines a private image as an image available to the user who created it. Such an image can contain an operating system, pre-installed public applications, service data, and the user's own applications. It is commonly used to rapidly create identically configured ECS instances.

A shared image , conversely, is a private image that another Huawei Cloud user has explicitly shared with the recipient. Therefore, saying that “a private image is shared by other users” reverses these concepts.

Option A is correct. Huawei describes Marketplace images as third-party images containing an operating system, application environment, and software already installed, allowing rapid deployment of application environments.

Option B is also correct: public images are standardized system images provided by the cloud platform and made available broadly to customers.

Option D conforms to Huawei IMS sharing restrictions. Huawei Cloud specifies that encrypted images cannot be directly shared with other tenants; an encrypted image must first be replicated as an unencrypted image if sharing is required.

Thus, C is the single incorrect statement .

Reference topics: Image Management Service; Public Images; Private Images; Shared Images; Marketplace Images; Image Encryption.

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Option A is incorrect because it confuses full-access permissions with a read-only role. In Huawei Cloud IAM, a permission whose name contains FullAccess normally represents full or administrator-level permissions for the corresponding service. For example, IAMFullAccess provides full permissions for IAM operations rather than read-only access.

Huawei Cloud separately defines Tenant Guest as providing read-only permissions for cloud services other than IAM. This distinction is important in HCIA IAM authorization concepts: FullAccess and ReadOnlyAccess represent materially different privilege levels.

The remaining statements correctly describe Huawei Cloud authorization. IAM supports roles and policies as authorization mechanisms, with policies providing more fine-grained control. User groups provide an efficient way to authorize multiple IAM users: an administrator assigns permissions to a group and then places users in that group, after which the users inherit the group's permissions. Finally, an IAM user can perform only the cloud-service operations allowed by the permissions granted to that identity.

Thus, option A incorrectly assigns the behavior of a read-only permission model to FullAccess and is the required answer.

Reference topics: IAM Permissions; Roles and Policies; User Groups; FullAccess; Tenant Guest.

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1 → No configuration is required

2 → Configure a VPC peering connection

3 → Create a VPN

The mappings follow Huawei Cloud's VPC connectivity rules. ECS-C and ECS-D are deployed in the same VPC , so their private network traffic can use the VPC's internal routing directly. Provided the applicable security-group rules allow the traffic, no additional VPC interconnection mechanism is required.

ECS-A and ECS-B are in different VPCs but in the same CN North-Beijing4 region. Huawei Cloud VPC peering is specifically designed to connect two VPCs in the same region using private IP addresses. Huawei documentation states that VPC peering is region-scoped and enables resources in the two peered VPCs to communicate after the required routes are configured.

ECS-A and ECS-C are located in different regions. The HCIA V3.5 networking design uses VPN for this scenario. Huawei's official VPN documentation specifically describes establishing VPN gateways and VPN connections between two VPCs in different regions, providing an encrypted communication channel across the Internet.

Therefore, the required sequence is same VPC → no additional configuration; same-region different VPCs → peering; cross-region VPCs → VPN .

Reference topics: VPC Communication; VPC Peering; VPN; Intra-VPC Networking.

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The statement is FALSE . Huawei Cloud explicitly supports using VPN to establish communication between VPCs deployed in different regions . The Huawei Cloud VPC FAQ describes this architecture directly: VPCs in the same region can be connected by VPC peering, while VPCs in different regions can establish connectivity through VPN. In the VPN design, each VPC uses a VPN gateway, and the two gateways establish an encrypted connection over the Internet. The VPC CIDR blocks are configured as the local and remote subnets.

This distinction is central to the HCIA V3.5 networking domain. VPC peering is region-scoped : two VPCs connected through a peering connection must reside in the same region. VPN, by contrast, can establish encrypted connectivity between geographically separated VPC networks. Huawei's VPN documentation specifies creating a VPN gateway for each VPC, creating VPN connections, configuring the peer gateway EIP, defining peer subnets, and applying matching cryptographic parameters.

Consequently, saying that Huawei Cloud VPN “does not support” cross-region VPC communications directly contradicts the supported VPN deployment model.

Reference topics: Virtual Private Network; Cross-Region VPC Connectivity; VPC Peering; VPN Gateways.

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Option C is incorrect under the HCIA-Cloud Service V3.5 networking model . Huawei Cloud's V3.5-era VPC documentation differentiates the two access-control mechanisms by their scope and rule behavior: security groups protect cloud server instances and use allow rules, whereas network ACLs protect subnets and support both allow and deny rules . Therefore, the statement that both mechanisms support both rule actions is inconsistent with the curriculum version used by this examination.

Option A is correct because a network ACL is associated with one or more subnets and controls traffic entering or leaving those subnets. Option D is also correct because security groups provide instance-level access control for resources such as ECSs. Huawei describes a security group as a collection of traffic-control rules applied to instances sharing common security requirements.

Option B is technically correct because these mechanisms can be layered. A security group provides access control around ECS instances, while a network ACL adds another security-control boundary around the subnet. Huawei specifically recommends using them together where comprehensive or fine-grained network protection is required.

Reference topics: Security Groups; Network ACLs; VPC Access Control; Defense-in-Depth.

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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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