質問 1:Cloud Sen/ice A is hosted by Virtual Server A, which is hosted by Hypervisor A on Physical Server A.
Cloud Service B is hosted by Virtual Server B.
Virtual Server C hosts Cloud Services C and D.
Virtual Server B and Virtual Server C are hosted by Hypervisor B on Physical Server B.
Cloud Service Consumer A accesses Cloud Service A (1). Cloud Service Consumer B accesses Cloud Service A (2). Cloud Service Consumer C accesses Cloud Service A (3) and then accesses Cloud Service B (4).
Cloud Service Consumers A, B and C simultaneously access Cloud Service A.
Cloud Service Consumer C receives a runtime exception and its request for access is rejected. It is determined that Cloud Service Consumer C attempted to upload a large amount of input data for Cloud Service A, which exceeded the bandwidth threshold of the virtual network.
The cloud architecture needs to be improved to avoid this from happening again.
Cloud Service Consumer C's repeated access of Cloud Service B imposes workloads that are large and highly unpredictable. After some time, Cloud Service B begins to delay its responses and sometimes times out entirely. The cloud resource administrator discovers that Virtual Server B is unstable and close to failure primarily because its CPU and memory resources are being used to their maximum capacity.
Cloud Services C and D are being positioned as SaaS products for use by a range of cloud consumer organizations. After their initial release, they begin to quickly use up the available memory in Virtual Server C, primarily because of the large amounts of state and session data they need to place into memory for extended periods.
Which of the following statements lists the patterns that can be applied to solve these three requirements and problems?
A. Elastic Resource Capacity, Service Load Balancing, Synchronized Operating State
B. Persistent Virtual Network Configuration. Load Balanced Virtual Switches, Service State Management
C. Elastic Network Capacity, Load Balanced Virtual Server Instances, Service State Management
D. None of the above.
正解:C
質問 2:Cloud Service A is hosted by Virtual Server A.
Cloud Storage Device A contains LUN A.
Cloud Storage Device A is a multi-tiered cloud storage device with different types of disk groups that perform at different levels. LUN A is located in the disk group with the highest performance level. Cloud Service B is hosted by Virtual Server B.
Virtual Servers A and B are hosted by HypervisorA, which is installed on a physical server (not shown) that resides in Cloud A.
A redundant implementation of LUN A is replicated synchronously to Cloud Storage Device C.
Cloud Storage Device C does not support multiple types of disk groups and resides in Cloud B, which is located in a different geographic region than Cloud A.
Requests that cloud service consumers send to Cloud Services A and B are intercepted by an automated scaling listener responsible for initiating scaling activities.
Cloud Service Consumer A issues a request to Cloud Service A (1). To process the request, Cloud Service A accesses LUN Aon Cloud Storage Device A (2). Cloud Service Consumer B issues a request to Cloud Service B (3). To process the request, Cloud Service B accesses LUN B on Cloud Storage Device B (4).
When Cloud Service Consumer A accesses Cloud Service A, there is usually no noticeable performance fluctuation, even during peak usage periods. However, recently, Cloud Storage Device A became unexpectedly unavailable, requiring that Cloud Service A access LUN A on Cloud Storage Device C instead. During the following outage period for Cloud Storage Device A, Cloud Service Consumer A encounters inconsistent performance from Cloud Service A, including unusual delays that occur whenever the data requested by Cloud Consumer A isn't cached and Cloud Service A is required to retrieve the data from LUN A.
Which of the following statements describes a solution that can address this problem?
A. The Shared Resources pattern can be applied to prevent Cloud Service A from encountering performance issues when IT resources hosted by Hypervisor A are accessed by other cloud service consumers. The Cross-Storage Device Vertical Tiering pattern can be applied to enable Cloud Storage Device A to scale to a higher performance disk type when an outage occurs.
B. The Storage Maintenance Window pattern can be applied so that future outages of Cloud Storage Device A do not occur unexpectedly. The Resource Pooling and Resource Reservation patterns can be further applied to establish a resource pool on Cloud A that has resources reserved specifically for Cloud Service A.
This will prevent other cloud service consumers, such as Cloud Service Consumer B, from competing for Cloud Service A's resources.
C. The Cloud Balancing pattern can be applied to enable Cloud Service A to switch over to Cloud Storage Device C if Cloud Storage Device A becomes unavailable. The Dynamic Data Normalization pattern can be further applied to streamline and reduce the quantity of the data being stored by LUN A within Cloud Storage Device A, so as to correspondingly reduce the performance impacts during high usage volumes.
D. None of the above.
正解:D
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SOA C90.06 認定試験の出題範囲:
トピック | 出題範囲 |
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トピック 1 | - Fundamental Cloud Architecture: This topic delves into the technology architecture of private and public clouds, SaaS, PaaS, and ISaaS environments, automated administration, provisioning methods, and container-related concepts like sidecars and chains.
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トピック 2 | - Cloud Architecture Lab: This lab-based topic includes practical exercises and case studies for implementing and optimizing various cloud architectures, from setting up IaaS environments to performance optimization and connectivity considerations.
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トピック 3 | - Cloud Technology Concepts: This topic explores cloud computing mechanisms such as virtual servers, containers, automated scaling, multi-device brokers, and resource replication. It includes an introduction to containerization, comparing it with virtualization, and architectures like cloud balancing and cloud bursting.
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トピック 4 | - Advanced Cloud Architecture: This topic focuses on advanced cloud architecture concepts including elastic, resilient, multitenant, and containerized environments. It covers elastic resource and network capacities, serverless deployment, storage management, and dynamic failure recovery.
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トピック 5 | - Fundamental Cloud Computing: This topic covers the fundamental terminology and concepts in cloud computing, including virtualization basics, cloud characteristics like elasticity and resiliency, SaaS, PaaS, and IaaS delivery models.
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参照:https://www.arcitura.com/cloud-school/exams/exam-c90-06-cloud-architecture-lab/
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