Free Practice Questions for Huawei H13-811_V3.5 Exam

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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Statement C is incorrect in the HCIA-Cloud Service V3.5 IMS model. Huawei Cloud does not impose a standalone service charge simply for using the core Image Management Service functions such as creating a standard private image. Huawei's official getting-started documentation explicitly states that creating a private image is free . Charges may nevertheless arise from dependent resources associated with image usage.

This distinction explains option A. Depending on the image and deployment model, costs can be associated with licensed operating systems, storage used for image files, backups, OBS objects, or other dependent cloud resources. These costs do not make IMS itself a separately charged service.

Option B correctly reflects the principal image categories taught in the HCIA course: public images, private images, and shared images . Marketplace images are additionally available as third-party packaged offerings but do not invalidate this fundamental IMS classification.

Option D also correctly describes the role of an image. Images provide standardized operating environments and can include the operating system, pre-installed applications, configuration data, and user applications. They can then serve as templates for rapidly creating ECS instances with consistent software configurations.

Accordingly, the incorrect statement is C .

Reference topics: Image Management Service; IMS Billing; Private Images; Image Classification; ECS Creation from Images.

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The major CTS functions represented by the options are trace recording, trace query, and trace transfer , making A, B, and D correct.

Trace recording captures operations performed through the Huawei Cloud management console, through APIs, and operations initiated by supported cloud services. These records provide an audit trail containing information such as the operator, operation time, resource, operation result, and associated request data.

Trace query allows administrators and auditors to search recent operational records on the CTS console using criteria such as trace source, resource type, operator, trace status, and operation type. This is essential for security auditing, compliance investigation, and troubleshooting.

Trace transfer provides longer-term retention and centralized analysis. CTS can package operation records into trace files and transfer them to supported destinations such as OBS or LTS for preservation and subsequent processing.

Option C, OS monitoring , does not belong to CTS. Operating-system performance monitoring is primarily a Cloud Eye/server-monitoring capability rather than an audit-trace function.

Huawei's official CTS documentation expressly identifies recording, querying, and transfer among its core service functions.

Reference topics: Cloud Trace Service; Trace Recording; Trace Query; Trace Transfer; Cloud Auditing.

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Memory-optimized ECSs are specifically designed for the workload described. Huawei Cloud defines memory-optimized ECSs as instances that excel at processing large in-memory datasets and high-throughput networking . They are intended for memory-intensive workloads involving large datasets, frequent or heavy data access, and requirements for rapid data processing and exchange.

The scenario deliberately combines several identifying characteristics: large-memory datasets, substantial data volumes, high numbers of access requests, demanding network performance, and rapid data transfer and processing. These characteristics correspond directly to the design profile of the memory-optimized ECS family. Huawei lists representative applications such as high-performance databases, in-memory databases, distributed memory caches, data analysis and mining, Hadoop, Spark, e-commerce, and other enterprise applications.

Ultra-high I/O instances emphasize extremely high storage IOPS and low disk latency. High-performance computing instances are optimized primarily for compute-intensive scientific or engineering workloads. Although “large-memory” may appear plausible, memory-optimized is the ECS category whose official description explicitly combines large in-memory datasets with high-throughput networking and heavy data access.

Therefore, D is the precise Huawei Cloud classification required by the scenario.

Reference topics: ECS Types and Specifications; Memory-Optimized ECSs; Memory-Intensive Workloads; High-Throughput Networking.

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All four categories form part of Huawei Cloud's layered security architecture. Network security includes controls and services designed to protect network boundaries and traffic, such as Anti-DDoS, Advanced Anti-DDoS, VPC security controls, firewalls, and network isolation. Huawei Cloud describes network security as a core component of its full-stack cloud defense model.

Application security protects web applications and application-layer traffic. Representative Huawei Cloud services include Web Application Firewall, which detects and blocks HTTP/HTTPS attacks, and application vulnerability/security capabilities.

Computing security covers server and workload protection. Host Security Service protects ECS and other server workloads through vulnerability management, intrusion detection, account-security controls, malware detection, and web tamper protection. Security-management capabilities such as Cloud Bastion Host and centralized security operations provide access management, authentication, authorization, auditing, and operational control.

Finally, data security encompasses encryption, database protection, identity/access control, sensitive-data protection, and lifecycle safeguards. Huawei's security architecture explicitly identifies protection of confidentiality, integrity, availability, durability, and traceability as data-security objectives.

Therefore, A, B, C, and D are all included .

Reference topics: Huawei Cloud Security Architecture; Network Security; Application Security; Compute Security; Security Management; Data Security.

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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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The statement is false . Huawei Cloud ECS supports multiple billing models, and cost optimization is not exclusive to pay-per-use billing. The principal modes include yearly/monthly, pay-per-use, and spot pricing , with each optimized for different workload characteristics.

Pay-per-use is useful for workloads with uncertain or fluctuating demand because resources are billed according to actual usage and can be released when no longer required. However, yearly/monthly billing can provide a lower effective price for stable, long-running workloads because Huawei Cloud applies subscription discounts; the longer the committed subscription period, the greater the potential discount. Therefore, for predictable production workloads running continuously, yearly/monthly billing can be substantially more economical than pay-per-use.

Spot pricing is another cost-saving mechanism. Spot instances use market-based pricing and can provide compute resources at a lower price where workload interruption characteristics permit their use. Consequently, several ECS billing models can reduce expenditure when aligned to an appropriate workload.

The incorrect portion of the statement is therefore the assertion that only pay-per-use can reduce costs .

Reference topics: Elastic Cloud Server; ECS Billing Modes; Yearly/Monthly; Pay-per-Use; Spot Pricing.

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The statement is TRUE. Huawei Cloud OBS provides several resource-based authorization mechanisms, including bucket policies and object policies. Their principal distinction is the scope of resources to which they apply.

Huawei's official OBS Permission Configuration Guide explicitly states that an object policy applies to only one object in a bucket, whereas a bucket policy applies to multiple objects or all objects within the bucket. This enables administrators to select the authorization mechanism that best matches the required granularity.

An object policy is useful when permissions must be configured specifically for an individual object, such as granting another principal read or write permissions to one particular resource without broadening access to the rest of the bucket.

A bucket policy supports broader authorization scenarios. Its policy statements can define principals, actions, resources, effects, and conditions to grant or restrict access to selected objects, prefixes, or the entire bucket. Typical uses include allowing another Huawei Cloud account to access specified OBS resources or granting IAM identities access to defined bucket content.

The question therefore correctly distinguishes object-level policy scope from bucket-level multi-object policy scope.

Reference topics: OBS Permission Management; Object Policies; Bucket Policies; Resource-Based Authorization.

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All four statements represent Huawei Cloud IAM capabilities. An agency establishes a trust relationship through which one account can delegate another account to manage specified resources according to assigned permissions. Huawei explicitly documents account delegation as an IAM function.

An IAM project corresponds to a region. Huawei defines default projects as mechanisms that group and physically isolate compute, storage, and network resources across regions. Users granted permissions in a default project can access resources covered by those permissions in the associated region. This qualification is important: IAM users do not automatically receive unrestricted access merely by existing; the project's assigned permissions determine their effective access.

A user group is explicitly defined as a collection of IAM users. Assigning permissions to groups simplifies authorization because users added to a group inherit its permissions.

Finally, Huawei's identity federation functionality allows an enterprise Identity Provider (IdP) to establish trust with Huawei Cloud so employees can use existing enterprise identities for SSO access instead of maintaining separate cloud credentials.

Reference topics: IAM Agencies; Project Management; User Groups; Identity Federation; Identity Providers.

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