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| Section | Objectives |
|---|---|
| Database and Middleware Services | - Cloud database services
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| Operations and Monitoring | - Cloud monitoring and O&M
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| Cloud Architecture Design Principles | - Cloud computing models and deployment architectures
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| Solution Design and Migration | - Solution architecture design
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| Compute and Storage Services | - Storage solutions
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| Network and Security Design | - Security and identity management
|
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問題 #56
Which of these statements about log structuring are correct?
Select all that apply.
答案：A,B,D
解題說明：
"Log structuring parsing converts unstructured or semi-structured log data into a structured format to facilitate storage, query, read, and analysis."
"Log structuring extracts logs with fixed formats or high similarity from log streams and filters out irrelevant logs. Structured logs can be easily queried and analyzed using SQL syntax."
"LTS supports ICAgent structuring parsing and cloud structuring parsing. Only one structuring parsing method can be configured for each log stream." Huawei source: Training PDF p. 597 Technical Deep Dive Log Tank Service (LTS) converts log data into a structure that makes searching, aggregation and analysis more efficient. Option B is true because Huawei supports ICAgent structuring parsing and cloud structuring parsing, although the course specifies one structuring method for an individual log stream at a time. Option C is true: structuring converts unstructured or semi-structured log messages into fields with predictable names and values. Option D is true because structured data can be stored, read, queried and analyzed more effectively, including through SQL-style operations.
Option A is false. Huawei's V3.5 description explicitly says the structuring operation extracts similarly formatted logs from log streams, not log groups. A log group is a management container for log streams, while the log stream is the relevant log-reading and writing unit. The assertion that an AI tool is a necessary defining component also does not match the source explanation.
For example, a raw event line containing a timestamp, ERROR severity, payment-service identifier, request ID and latency can be parsed into named fields. An operator can then group errors by service, filter by severity and calculate a latency distribution without repeatedly constructing fragile text expressions. Logging policies should capture consistent fields such as correlation IDs, protect sensitive information, apply retention requirements and enable suitable indexing. Structured logs can support dashboards and alarm rules, but do not fix missing events or poor application logging by themselves. Huawei's official per-log-stream distinction makes B, C and D the correct choices.
Technical commands / calculations from the reviewed batch
{ "level": "ERROR", "service": "payment-service",
"request_id": "1234", "duration_ms": 560 }
問題 #57
When you create a cluster in Cloud Container Engine (CCE), which of the following container network models can you select?
Select all that apply.
答案：A,B
解題說明：
"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.
問題 #58
A small or micro enterprise intends to use Huawei Cloud Elastic Cloud Server (ECS) to deploy a small web- based forum for technical and experience sharing and enterprise promotion. The enterprise wants data to be stored separately from ECSs and to support independent access. Which of the following storage services are recommended as cost-effective options?
Select all that apply.
答案：B,C
解題說明：
"SFS provides scalable, high-performance NAS file storage and supports shared file access from multiple ECSs, BMSs, and containers running on CCE and CCI."
"OBS provides massive, secure, and reliable storage for data of any format and size at low cost."
"EVS disks ... must be attached to cloud servers for use and cannot be used alone." Huawei source: Training PDF pp. 201, 210, 222 Technical Deep Dive The enterprise needs cost-effective storage separated from the web forum's ECS instances and supporting access independent of a particular server. SFS and OBS meet those needs in different ways. Option A is correct because Scalable File Service offers managed Network Attached Storage with a shared filesystem interface. Multiple ECSs can mount the same eligible filesystem, allowing a scale-out web application to read and write shared documents or user uploads without maintaining separate local copies.
Option B is also correct. Object Storage Service provides scalable, durable object storage accessed through APIs, SDKs and supported HTTP/HTTPS endpoints. Forum images, attachments and static user content can be stored in OBS independently of the lifecycle of the ECS running the application. This is often more economical for media assets than reserving dedicated server-attached capacity.
Option C is not recommended for the small-forum scenario. Dedicated Distributed Storage Service provides dedicated storage infrastructure for demanding workloads such as critical databases and high-concurrency systems and generally entails unnecessary cost and capacity. Option D is block storage: EVS disks must be attached to supported cloud servers for ordinary filesystem use. Although their data can persist across server replacement, EVS does not provide the same independent API or shared file interface as OBS and SFS.
A well-designed forum can store structured posts and user records in RDS, media in OBS, and shared filesystem-based assets in SFS only when required. These distinctions support A and B.
問題 #59
After a company migrates its workloads to the cloud, multiple cloud servers in a virtual private cloud (VPC) need Internet access. However, the EIPs associated with the cloud servers might be attacked. An engineer suggests adding multiple EIPs when configuring DNAT rules. If one EIP is attacked, the other EIPs can continue to provide services and keep operations running normally.
答案：A
解題說明：
"SNAT translates private IP addresses into EIPs, allowing traffic from a private network to go out to the Internet."
[Related section] DNAT maps an incoming EIP/port to a destination server; multiple EIPs in an SNAT rule are the documented outbound availability option.
Huawei source: Training PDF pp. 169-171; official NAT guidance
Technical Deep Dive
The scenario describes private ECSs requiring outbound Internet access, which is a Source Network Address Translation (SNAT) problem. Huawei NAT gateways can use one or more EIPs in supported SNAT configurations. If a particular public address is blocked or attacked, alternative EIPs may preserve outbound connectivity, subject to service behavior and security controls. DNAT has a different purpose: it maps incoming traffic targeting a public EIP and port to a specified private server and port.
The statement explicitly recommends configuring multiple EIPs in DNAT rules as the documented availability strategy for general outbound access, so it is FALSE. The relevant documented technique is configuring multiple EIPs in SNAT rules. It is important not to infer that attaching more EIPs to DNAT automatically provides seamless inbound service failover. Incoming clients must use an address and port that resolve and route to an available service endpoint, and DNAT port mapping has its own uniqueness constraints.
For Internet-facing applications, robust availability may require ELB, health checks, DNS failover, DDoS protection and redundant backends. For outbound access, NAT gateway EIP pools, route correctness and the limits of the gateway should be monitored. Architects should also assess whether an EIP block is due to anti- DDoS blackholing; multiple EIPs are not a substitute for an appropriate traffic-mitigation service. The question intentionally uses DNAT where SNAT is needed, making B correct.
問題 #60
Parallel File System (PFS) is an OBS high-performance file system. In a parallel file system, every directory level in the access path is handled as an independent file. For example, in the path /dir01/dir02/example.txt,
/dir0l/, /dir01/dir02/, and /dir01/dir02/example.txt are all objects simulated by using files. These are special file representations in object storage.
答案：A
解題說明：
"Each directory in the access path of a parallel file system is independent."
[The example] /dir01/ and /dir01/dir02/ are directories, while /dir01/dir02/example.txt is a file.
Huawei source: Training PDF p. 213
Technical Deep Dive
OBS Parallel File System is intended to provide filesystem-like semantics and high-performance access on top of object storage. Huawei's V3.5 material states that each directory in a PFS access path is independent. In a path such as /dir01/dir02/example.txt, /dir01/ and /dir01/dir02/ represent directories, while example.txt is a file. The question is FALSE because it describes all three path components as objects simulated using files and therefore fails to distinguish the independent directory representations.
Standard object storage often presents apparent folders as key prefixes rather than independent directory objects. For example, an ordinary OBS object key named dir01/dir02/example.txt can create the appearance of a hierarchy even though no separate filesystem directory is required. PFS uses filesystem-oriented metadata and directory behavior to improve compatibility with distributed processing tools and filesystem operations. It can support rename and directory-oriented workflows more efficiently than implementing a virtual directory solely by rewriting object-key prefixes.
PFS can be useful for analytic pipelines, data lakes and Hadoop-compatible applications using OBSFileSystem. Architects still need to distinguish an object store's consistency, naming, metadata and API semantics from POSIX filesystem guarantees; the platform's specified interface determines what operations are supported. A source typo in the original question uses a letter that resembles the digit one in a directory name; it has been standardized to dir01 for readability without changing the answer. The verified answer is B, FALSE.
問題 #61
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