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| Section | Objectives |
|---|---|
| Compute and Storage Services | - Elastic Cloud Server (ECS) and container services
|
| Database and Middleware Services | - Cloud database services
|
| Cloud Architecture Design Principles | - Cloud computing models and deployment architectures
|
| Operations and Monitoring | - Cloud monitoring and O&M
|
| Network and Security Design | - Cloud network architecture
|
| Solution Design and Migration | - Solution architecture design
|
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NEW QUESTION # 35
Elastic Volume Service (EVS) offers several disk types, each suited to different workloads. Which of the following statements about EVS disk types and their use cases are false?
Select all that apply.
Answer: A,B,C
Explanation:
"There are the following types of EVS disks, each with different levels of I/O performance: Extreme SSD V2, Extreme SSD, General-Purpose SSD V2, Ultra-high I/O, General-Purpose SSD, High I/O, and Common I/O.
EVS disks differ in performance and price. Choose a disk type based on application requirements."
"Major disk performance metrics include IOPS, throughput, and read/write I/O latency." Huawei source: Training PDF p. 202; official EVS specification documentation Technical Deep Dive Different Huawei EVS disk types are priced and engineered for different IOPS, throughput and latency requirements. Option A is false because it assigns general, latency-insensitive development workloads to Extreme SSD. Extreme SSD is intended for demanding latency-sensitive applications, including high- performance databases and AI workloads. The modest scenario in A is more typical of the High I/O category identified in the course.
Option B is true. General-Purpose SSD is intended for mainstream workloads that require balanced performance, including enterprise office systems, development environments and interactive applications that benefit from low latency. Option C is false because ultra-large bandwidth, extremely low latency and highly demanding mission-critical database or AI workloads describe Extreme SSD much better than High I/O. High I/O is not the premium tier for those extreme requirements.
Option D is also problematic. The Common I/O category is associated with low transaction rates, large- capacity storage and moderate I/O requirements, not with an assertion of robust or high read performance. It is therefore false as literally written. Huawei's course emphasizes matching actual IOPS, throughput and latency needs rather than extrapolating from a general disk label.
The original source's older instruction to choose two suggests A and C were intended, but the revised 'Select all that apply' wording makes A, C and D defensible. This is an answer-key defect: the item should either rewrite D to characterize moderate I/O correctly or retain three false statements. Disk benchmarking must also account for block size, read/write mix, queue depth and instance limits.
NEW QUESTION # 36
Elastic Load Balance (ELB) provides dedicated and shared load balancers. Which of the following statements about shared load balancers is false?
Select all that apply.
Answer: C,D
Explanation:
"Transfer Client IP Address is enabled for Layer 7 listeners by default. You do not need to manually enable it."
[Supporting description] Enabling Transfer Client IP Address for Layer 4 listeners preserves the client source IP rather than translating it to the 100.125.0.0/16 range.
Huawei source: Training PDF p. 166
Technical Deep Dive
The question asks which statements about shared Elastic Load Balance are false. Option B is false because client-IP transfer behavior is not enabled in the same way by default for both Layer 4 and Layer 7 listeners.
The Huawei V3.5 slide specifically states that Transfer Client IP Address is enabled by default for Layer 7 listeners; Layer 4 source-address preservation depends on the relevant listener setting.
Option D is also false. It reverses the behavior of enabling Transfer Client IP Address for a supported Layer 4 shared listener. When preservation is enabled, the backend receives the original client source address instead of a translated source address from the 100.125.0.0/16 range. Option A describes the shared ELB source- translation behavior when client-IP preservation is not applied and is generally true in the course context.
Option C is true because backend security groups and network ACLs must permit load balancer requests and health-check traffic.
Client identity matters for auditing, geographic restrictions, rate limiting and incident analysis. For Layer 7 HTTP and HTTPS forwarding, applications may also use an X-Forwarded-For header to identify the originating client, but this is not the same as packet-level source-IP preservation. Engineers must configure trust boundaries around such headers so that arbitrary client-supplied values are not accepted as authoritative.
The curriculum explicitly supports B and D as the false claims.
NEW QUESTION # 37
Which of the following network access modes does Cloud Container Engine (CCE) provide for workloads?
Select all that apply.
Answer: B,C
Explanation:
"Workload network access falls into the following main scenarios: accessing a workload from within the cluster, accessing a workload from outside the cluster through either a private or public network, and accessing an external network from a workload, including both private and public network destinations."
"When you access a workload through a public network, assign an EIP to the node or LoadBalancer Service."
"To access workloads across different VPCs, you need a peering connection or other means." Huawei source: Training PDF p. 455 Technical Deep Dive Huawei Cloud CCE supports communication among pods within a cluster, external access through suitable Services or ingress, and private communication with external networks when routing is configured. Option C is correct because pods normally communicate through the container network, subject to network policies and other restrictions. Option D describes a supported cross-VPC use case, but it omits important prerequisites:
VPC peering or another private routing mechanism is required in addition to allowing appropriate ports through security groups and network ACLs.
Option A is literally inaccurate. Public access to a CCE workload is supported, but Huawei's course instructs users to associate an EIP with the node, load balancer or an eligible pod interface, depending on the networking model-not directly with the cluster object. Option B is also incorrect because simply binding a Global EIP to the cluster is not the documented method for inter-region pod connectivity. Cross-region access requires supported network connections and routes, and is not guaranteed merely by public address allocation.
The earlier form of this item directed 'Choose three', strongly suggesting A, C and D were intended. Under the revised 'Select all that apply' instruction, the technically defensible choices are C and D as stated. If A were rewritten to say 'bind an EIP to a node or LoadBalancer Service', A would become correct. This is a substantial question-quality issue; answer keys must not silently rewrite an option. Engineers troubleshooting cross-VPC service access should inspect container CIDRs, routes, peering connections, backend security- group permissions and workload policies.
NEW QUESTION # 38
Scalability generally means that a system or service can accommodate changes in scale by flexibly adjusting its architecture or resource configuration as business demand increases. Which of the following are examples of vertical scaling?
Select all that apply.
Answer: B,D
Explanation:
"Vertical scaling is to replace existing IT resources with one of greater or lower capacity."
[Course distinction] Horizontal scaling adds service nodes; vertical scaling changes the capacity of an existing resource.
Huawei source: Training PDF pp. 22-23
Technical Deep Dive
Vertical scaling, also called scaling up or scaling down, changes the capacity of an existing compute or database instance rather than increasing the number of instances. The distinction is architectural: vertical scaling changes resources assigned to a node; horizontal scaling adds or removes separate nodes.
Option B is correct because reducing RDS specifications from eight vCPUs and 32 GiB to four vCPUs and
16 GiB is vertical scale-down. Although capacity decreases, it remains vertical scaling. Option D is correct because increasing an ECS from two vCPUs and four GiB to four vCPUs and eight GiB is vertical scale-up.
Option A is horizontal database scaling: creating read replicas increases the number of database nodes available to serve read requests. Option C is likewise horizontal: the ECS population grows from two to five instances.
On Huawei Cloud, ECS flavor changes and supported RDS instance-class modifications can implement vertical scaling. Some changes may require restarting the instance or using a maintenance window. Vertical scaling is limited by available hardware and maximum instance flavors. Horizontal scaling can increase aggregate capacity and resilience, but requires load balancing, session handling, data distribution and consistent application behavior. Neither design automatically solves all availability issues; the choice must reflect the workload bottleneck and recovery objectives.
NEW QUESTION # 39
After read replicas are created, they can serve read-intensive workloads for the primary instance and reduce its load. Which of the following statements about high-availability (HA) read replicas are true?
Select all that apply.
Answer: A,B,C
Explanation:
"Read replicas include single-node read replicas and HA read replicas."
[HA Read Replica slide] If the physical server hosting an HA read replica fails, the standby read replica takes over. If a single-node read replica fails, the database proxy routes requests to other read replicas or the primary instance.
Huawei source: Training PDF p. 287
Technical Deep Dive
Read replicas offload read-heavy database traffic from the primary instance, improving read scalability while retaining a primary location for writes. Huawei V3.5 distinguishes single-node read replicas from high- availability read replicas; B is correct. HA read replicas include active and standby replica nodes so a standby can take over after the physical server hosting the active read node fails; C is correct.
Option D is correct because the database proxy can redirect traffic away from an unavailable single-node read replica to other healthy replicas or, depending on the configured policy, the primary instance. This is an important service-continuity mechanism for applications that should not manage every read replica address themselves.
Option A is false. The course does not impose an unconditional requirement that read-replica instance specifications be identical to those of the primary. Database feature compatibility, engine constraints and settings such as case sensitivity matter, but equality of every vCPU and memory dimension is not a universal availability rule. An architect must also account for asynchronous replication lag. A user who writes a record and immediately reads from a replica may not see the latest committed change; strict read-after-write workloads should use suitable primary routing or consistency controls. Monitor delay, read/write splitting policies, proxy state, health checks and read capacity. Any answer key listing only B and C omits Huawei's explicit support for D.
NEW QUESTION # 40
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