Alibaba Cloud ACP-Cloud1 Practice Exams
Last updated on Oct 22,2026- Exam Code: ACP-Cloud1
- Exam Name: ACP Cloud Computing Certification
- Certification Provider: Alibaba Cloud
- Latest update: Oct 22,2026
Auto Scaling can automatically adjust the number of ECS instances based on user-defined scaling rules to meet service needs. If a user cannot predict service changes or does not have enough history data, he/she can still use dynamic scaling mode to automatically add/remove ECS instances based on certain Cloud Monitor performance metrics (such as the CPU utilization rate)
- A . True
- B . False
A
Explanation:
Auto Scaling is a service that automatically adjusts the number of ECS instances based on your business needs and policies. You can use Auto Scaling to cope with unpredictable or periodic workloads. Auto Scaling supports three scaling modes: scheduled, dynamic, and fixed 1. Dynamic scaling mode allows you to automatically add or remove ECS instances based on CloudMonitor metrics, such as CPU utilization, memory utilization, inbound traffic, and outbound traffic2. You can configure scaling rules and scaling policies to define the conditions and actions for dynamic scaling. For example, you can set a scaling rule to add one ECS instance when the average CPU utilization of the scaling group exceeds 80% for five consecutive minutes3. Dynamic scaling mode is suitable for scenarios where you cannot predict service changes or do not have enough historical data to set a schedule4.
Reference: 1: Auto Scaling overview – Auto Scaling – Alibaba Cloud Documentation Center1
2: Scaling modes – Auto Scaling – Alibaba Cloud Documentation Center2
3: Create a scaling rule – Auto Scaling – Alibaba Cloud Documentation Center3
4: Auto Scaling: Automatically Adjusts Computing Resources – Alibaba Cloud5
When using Alibaba Cloud SLB. you can set different weights for backend ECS instances The higher the weight of a backend ECS instance the more load will be assigned to it An SLB instance has 5 ECS instances in the backend server pool, all of which are healthy Among these 5 ECS instances, the weight of ecs_inst1 is set to 100.
Which of the following statements is correct?
- A . Based on request level parameters of external requests, all requests with a request level parameter of 100 will be transferred to ecs_inst1
- B . Based on SLB’s working mechanism, approximately 20% of loads will be assigned to ecs_inst1
- C . We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen
- D . 100% of loads will be assigned to ecs__inst1, and the remaining 4 ECS instances will stay idle
C
Explanation:
When using Alibaba Cloud SLB, you can set different weights for backend ECS instances. The higher the weight of a backend ECS instance, the more load will be assigned to it. However, the load distribution is not based on the absolute value of the weight, but on the proportion of the weight in the total weight of all healthy backend ECS instances. For example, if there are two healthy backend ECS instances with weights of 100 and 200 respectively, the first instance will receive 33.3% of the load, and the second instance will receive 66.7% of the load. Therefore, to determine the load distribution of the 5 ECS instances in the question, we need to know the weight settings of the remaining 4 ECS instances. Without this information, we cannot tell what would happen. The other options are incorrect because they are based on wrong assumptions or misunderstandings of the SLB weight setting mechanism.
If an administrator often needs to manage multiple ECS instances in an Alibaba Cloud VPC through the Internet.
Which of the following solutions can meet this need at low costs and without affecting system security. (Single answer)
- A . Modify the VPC Security Group policy, to allow access from the Internet.
- B . None of these answers are correct.
- C . Bind an EIP to each of the ECS instances, and log on to each of these ECS instances to manage them.
- D . Choose an ECS instance from VPC and make it as the bastion host. And then, apply an EIP and bind it to this ECS instance. After that, the administrator can manage other ECs instances through this bastion host.
Alibaba Cloud Object Storage Service (OSS) is a cloud storage service that features massive capacity, outstanding security, low costs, and high reliability. In an OSS bucket, all elements are stored as________.
- A . Hashes
- B . Keys
- C . Objects
- D . Stubs
C
Explanation:
OSS does not use a hierarchical structure for objects, but instead uses a flat structure. All elements are stored as objects in buckets. To use OSS in the same manner in which local file systems are used, you can configure Cloud Storage Gateway (CSG).
https://www.alibabacloud.com/help/doc-detail/31817.htm
The statement C is correct, because in an OSS bucket, all elements are stored as objects. An object is the basic unit of OSS storage. Each object consists of a unique key, data, and metadata. The key is the name of the object, which is used to identify the object in a bucket. The data is the content of the object, which can be any type of file, such as text, image, video, or audio. The metadata is the information about the object, such as its size, type, creation time, and custom attributes.
Reference: = Object Storage Service:Overview – Alibaba Cloud
An Alibaba Cloud RDS read-only instance has its data synchronized from the master instance.
Which of the following can be performed by the read-only instance from the RDS management console? (Single answer)
- A . Backup policy configuration and manual backup
- B . B. Database creation or deletion
- C . Editing its own whitelist
- D . Account authorization and account password changing
Alibaba Cloud’s object storage (Object Storage Service, OSS for short) can be used to store a large amount of data, but there is still a maximum number of files in a single bucket.
- A . TRUE
- B . FALSE
SQL injection is a common attack on the application layer. It builds special input as a parameter to pass into a web application to steal or destroy the application dat
a.
Which of the following is the target that SQL injection eventually destroys or steals from?
- A . Web applications
- B . Redis database
- C . Confidential files on the server
- D . Pictures on the server
A
Explanation:
SQL injection attacks primarily target databases by exploiting vulnerabilities in web applications. Attackers manipulate SQL queries to gain unauthorized access to the application’s backend database, which may lead to data leakage or destruction. Although SQL injection affects the data stored in databases and not directly files or images on the server, the primary target remains the application layer through which the attack is conducted.
Reference: Alibaba Cloud SQL Injection Prevention
Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low cost, and high reliability. OSS provides multiple types of monitoring reports to help you monitor OSS resource consumption in real time.
Which of the following monitoring functions are supported by OSS? (Choose three.)
- A . Storage space monitoring
- B . User device type (PC end or mobile end) monitoring for accessing OSS files
- C . Monitoring for OSS service requests (including the number of PUT and GET requests)
- D . UV (Unique Visitor) monitoring for OSS service requests
A, C, D
Explanation:
Alibaba Cloud OSS provides monitoring functions such as storage space monitoring, tracking service requests (like PUT and GET requests), and monitoring UV (Unique Visitors) to help analyze usage and performance. However, OSS does not specifically track the device type (e.g., PC or mobile) accessing files, making option B incorrect.
Reference: Alibaba Cloud OSS Monitoring and Metrics
During a scaling activity, when Auto Scaling fails to add ECS instances into a scaling group, it will try to ensure transaction completeness and roll back the scaling activity.
For example, a scaling activity intends to create and add 20 ECS instances into the scaling group, but only 19 of them are added successfully. In this case, the entire scaling activity will be rolled back, and the 19 instances will be removed and released as well.
- A . TRUE
- B . FALSE
A
Explanation:
Alibaba Cloud Auto Scaling ensures transaction completeness during scaling activities. If the
intended number of ECS instances cannot be added to the scaling group, Auto Scaling rolls back the entire activity, releasing any partially added instances. This behavior prevents incomplete scaling activities, ensuring the scaling action either fully succeeds or is reverted entirely.
Reference: Alibaba Cloud Auto Scaling Rollback Mechanism
Company G developed a shopping App. The system is constructed based on Alibaba Cloud products. They use Elastic Compute Service (ECS) instances and object Storage Service (OSS) in North China 1region, and store static web pages and images on OSS.
After the App went online, the access speed in mainland China is acceptable. Recently, the company decided to expand to the U.S. market and requires an acceptable access speed too for U.S. users. To address this requirement, company G should select Alibaba Cloud ___service. (Single answer)
- A . Enabling object Storage Service (OSS) in West US region with Content Delivery Network (CDN) in North China 2 regions
- B . Enabling Object Storage Service (OSS) in North China 1 region with Content Delivery Network(CDN)accelerating West Us(Silicon Valley) region
- C . Enabling Auto Scaling and more Elastic Compute Service(ECS) instances
- D . Enabling Auto Scaling and Content Delivery Network(CDN)