Pass the Huawei HCIA-Cloud Service H13-811_V3.5 Questions and answers with ExamsMirror

The statement is FALSE because directly binding an EIP to an ECS is only one of several Huawei Cloud mechanisms for providing Internet access. An ECS with its own EIP can communicate directly with the public network, but ECSs can also access the Internet without having an EIP individually bound to each server .

The principal alternative is a public NAT Gateway using an SNAT rule . Huawei Cloud states that servers in a VPC subnet can share an EIP through a public NAT gateway. The NAT gateway translates their private source addresses into the configured public EIP, enabling outbound Internet connectivity while avoiding the need to expose or allocate an individual public IP address to every ECS.

Huawei's ECS documentation also explicitly describes “Internet connectivity for an ECS without an EIP bound” and recommends NAT Gateway as the standard solution. A proxy/SNAT ECS can also provide an Internet access path in suitable architectures.

Therefore, binding an EIP directly to the ECS is a valid method, but it is not the only method , making the statement false.

Reference topics: Elastic IP; Public NAT Gateway; SNAT; ECS Internet Connectivity; VPC Networking.

Option A is not a main WAF function . Huawei Cloud Web Application Firewall is an application-layer web protection service . It analyzes HTTP and HTTPS traffic and protects websites against threats such as SQL injection, cross-site scripting, command injection, malicious bots, scanners, CC attacks, and other web exploits.

Huawei explicitly lists information leakage prevention , web tamper protection , and anti-crawler protection among WAF's protection functions. Information leakage prevention can mask or block sensitive information such as ID numbers, phone numbers, and email addresses. Web tamper protection prevents unauthorized modification of protected static website pages. Anti-crawler protection identifies and mitigates malicious automated crawler behavior.

Brute-force attacks against ECS operating-system or application accounts , however, fall primarily under Host Security Service (HSS) . Huawei documents HSS detection and blocking capabilities for brute-force attacks involving services such as SSH, RDP, MySQL, SQL Server, and FTP.

WAF can mitigate certain web-based authentication abuse using web rules and rate controls, but generic ECS account brute-force protection is not the WAF function described here.

Therefore, the required answer is A .

Reference topics: Web Application Firewall; Information Leakage Prevention; Web Tamper Protection; Anti-Crawler; Host Security Service.

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Option D is incorrect because improved response speed and website availability are fundamental objectives of CDN . Huawei's official CDN description explicitly characterizes CDN as a smart virtual network on Internet infrastructure that caches origin content at points of presence closer to users. This reduces transmission distance and accelerates access.

Huawei specifically states that CDN speeds up site response and improves site availability , while overcoming bottlenecks associated with low bandwidth, heavy user traffic, and uneven distribution of network nodes. Therefore, claiming that CDN cannot improve response speed or availability directly contradicts the documented purpose of the service.

Option A is essentially Huawei's own definition of CDN. Option B correctly describes major problems addressed by distributed content caching and request scheduling. Option C is also correct: content is cached or distributed to edge PoPs, and requests are scheduled to suitable nearby nodes. This reduces the requirement for every request to reach the original server.

CDN can additionally reduce origin-server workload and bandwidth consumption, which may improve origin infrastructure efficiency. However, that benefit exists alongside , not instead of, faster response and improved availability.

Accordingly, D is the only incorrect statement.

Reference topics: CDN Fundamentals; CDN PoPs; Website Acceleration; Content Distribution; Site Availability.

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The statement is TRUE . Huawei Cloud Image Management Service supports creating private images from external image files, with OBS serving as the staging storage location for those files. The documented workflow is to prepare the source image, upload the image file to an appropriate OBS bucket, and then register or import that file through IMS as a private image.

Huawei's IMS documentation explicitly describes the scenario as registering an image file that has been uploaded to an OBS bucket as a private image . During image creation, the administrator selects Import Image or Image File as the source, selects the OBS bucket containing the prepared file, and then selects the required file.

Supported formats and detailed constraints depend on the image type and import method. For example, standard system-disk image imports and optimized fast-import workflows have specific requirements concerning image formats, file size, operating system, and bucket storage class. However, these restrictions do not change the fundamental integration represented in the question.

OBS therefore provides object storage for the source image file, while IMS performs image registration and lifecycle management. The resulting private image can subsequently be used to provision identically configured ECS instances.

Reference topics: Image Management Service; Creating Private Images; Importing Image Files; OBS and IMS Integration.

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For the HCIA-Cloud Service V3.5 snapshot model represented by this question, the statement is FALSE. Huawei Cloud's exam-era EVS documentation states that an EVS snapshot captures the state of a disk at a specific point in time and can be used for rollback or creation of another disk. However, the snapshot is dependent on its source EVS disk.

Huawei's earlier official EVS documentation explicitly states that when an EVS disk is deleted, the disk data and snapshots created for that disk are also deleted. The applicable documentation also states that when a snapshot's source disk is deleted, all snapshots of that source disk are deleted.

This distinction matters because Huawei has subsequently introduced standard snapshots stored in OBS, for which newer lifecycle behavior can differ. Current documentation distinguishes legacy snapshots from standard snapshots: legacy snapshots are deleted with the source disk, whereas newer standard snapshots may remain. However, HCIA V3.5 questions were written around the earlier EVS snapshot behavior.

Accordingly, the proposition that deleting an EVS disk does not delete its snapshots contradicts the V3.5-era model.

Reference topics: EVS Snapshots; Snapshot Lifecycle; EVS Disk Deletion; Point-in-Time Recovery.

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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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The statement is TRUE and closely follows Huawei Cloud's official definition of Object Storage Service. OBS is a cloud-based object storage platform designed to provide scalable, secure, durable, and cost-effective storage for large volumes of unstructured data. Huawei explicitly identifies OBS as a web service that exposes APIs through both HTTP and HTTPS.

Huawei provides several access mechanisms. Administrators and ordinary users can manage buckets and objects through the OBS Console and graphical or command-line OBS tools, while application developers can integrate OBS programmatically through supported SDKs and REST APIs. This enables applications to perform operations such as object upload, download, deletion, metadata management, lifecycle configuration, access control, and multipart upload without requiring direct interaction with the management console.

Huawei also describes OBS as accessible over the Internet from different locations, subject to authentication, authorization, network, and bucket-policy controls. The SDK/API layer is specifically intended to facilitate development of upper-layer applications using OBS as persistent object storage.

Therefore, every technical assertion in the statement corresponds to the official Huawei Cloud OBS architecture and access model.

Reference topics: Object Storage Service Overview; OBS APIs and SDKs; OBS Console; Object Storage Architecture.

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Option D is incorrect . The HCIA-Cloud Service V3.5 comparison positions SFS Capacity-Oriented as the large-capacity, high-bandwidth, cost-sensitive file-storage option. Huawei describes its principal advantages as large capacity, high bandwidth, and low cost , making it particularly appropriate for media processing, large-scale file sharing, HPC, and backup workloads.

The performance characteristics also support A and B. Huawei's documented SFS Capacity-Oriented implementation provides substantially greater maximum aggregate bandwidth than the previous-generation SFS Turbo Standard class. However, its access latency is approximately 3–20 ms , whereas SFS Turbo Standard provides lower latency, historically around 2–5 ms . SFS Turbo is therefore more appropriate where low-latency access and workloads involving large numbers of small files are important.

Capacity-Oriented storage can scale to petabyte-scale capacities and is specifically optimized economically for large-volume storage. Consequently, for equivalent expenditure, it can provide significantly greater capacity than performance-oriented SFS Turbo configurations.

Option D reverses this economic relationship. SFS Capacity-Oriented is not positioned as the more expensive alternative for equal capacity; low cost at large scale is one of its defining characteristics .

Reference topics: SFS File System Types; SFS Capacity-Oriented; SFS Turbo Standard; File Storage Performance and Cost.

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