ACP-Cloud1 Exam Questions & Answers
ACP Cloud Computing Certification Exam • Alibaba
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Sample ACP-Cloud1 Questions
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Cloud computing adopts a common model in Distributed Systems. It distributes a computing task to a resource pool (comprised of a large number of computers). Elastic utilization of the resource pool allows applications to obtain computing capacity, storage space, and message services according to needs. Which of the following statements are correct about cloud computing? (Choose four.)
Cloud computing is characterized by large-scale infrastructure, high availability, on-demand service provisioning, and versatility in handling diverse applications and workloads. It supports both multi-tenant and single-tenant configurations, and although containerization is popular, cloud computing is not limited to container-based architectures.
Alibaba Cloud SLB can help distribute traffic among multiple backend servers. Which of the following statements is correct about backend servers?
Alibaba Cloud Server Load Balancer (SLB) is designed to distribute incoming network traffic across multiple ECS instances within Alibaba Cloud, enhancing fault tolerance and application reliability. Backend servers for SLB must be Alibaba Cloud ECS instances, as SLB is specifically optimized to work within the Alibaba Cloud ecosystem. While it does not support instances from other cloud providers, it ensures integration and performance with Alibaba Cloud's ECS instances.
When using Alibaba Cloud SLB to forward layer 7 (HTTP) service requests, SLB will replace the IP address in the HTTP header file to forward requests. Therefore, the access IP address that can be seen on the backend ECS instance is the IP address of SLB instead of the client's real IP address.
When forwarding layer 7 (HTTP) requests, Alibaba Cloud SLB preserves the client's real IP address by including it in the X-Forwarded-For header. This allows the backend ECS instance to access the client's actual IP rather than the SLB's IP address. This practice is common for maintaining accurate client IP information in HTTP forwarding scenarios.
When distributing loads to multiple ECS instances with an Alibaba Cloud Server Load Balancer (SLB), you can obtain the real IP addresses of users who initiate the requests through _____________. (Choose two.)
In Alibaba Cloud SLB, Layer-7 (HTTP/HTTPS) services require enabling the 'X-Forwarded-For' header to retrieve the real IP address of clients, while Layer-4 (TCP/UDP) services can obtain the real IP address directly without additional settings.
Cloud Disk is a block storage product provided by Alibaba Cloud (especially for ECS). It features low latency and high reliability. Which of the following statements is true for Cloud Disk?
Alibaba Cloud Cloud Disks are zone-specific and can only be attached or detached between ECS instances within the same zone and under the same account. This restriction ensures low-latency access and high data availability within the specific zone. Before use, Cloud Disks must be formatted and mounted on an instance.
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