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
All versions of Alibaba Cloud RDS uses master-slave mode to ensure high availability. When the master database fails, RDS will switch to the standby database within 30 seconds.
- A . TRUE
- B . FALSE
An enterprise hosts their servers (include both Linux and Windows servers) in a traditional IDC Every night hackers with IP addresses from many countries try to crack the password of their servers, making the administrator terribly worried about this However because of work requirements the remote management port of these servers must be opened to public network.
The administrator heard that Alibaba Cloud has solutions that can help customers improve the security of their systems Therefore, he/she wants to migrate the system to Alibaba Cloud.
Which of the following functions should the administrator activate in Alibaba Cloud to reduce the possibility of brute force password cracking?
- A . Cloud Firewall
- B . Anti-DDoS Origin Basic Edition
- C . CloudMonitor
- D . Security Center
A
Explanation:
Cloud Firewall is a service that provides centralized protection for your cloud assets and prevents unauthorized access to your servers. Cloud Firewall can monitor and control the inbound and outbound traffic of your servers, and block malicious requests and attacks. Cloud Firewall can also detect and prevent brute force password cracking attempts by using intelligent algorithms and threat intelligence. Therefore, option A is the correct answer.
Reference: What is Cloud Firewall?, Protect servers from brute force attacks
In an Alibaba Cloud Elastic Compute Service (ECS) instance, you can freely change directory permissions of the system root directory in Linux, which has no influence on all services in the Elastic Compute Service (ECS) instance.
- A . TRUE
- B . FALSE
B
Explanation:
Changing directory permissions of the system root directory in Linux can have a significant impact on system functionality and services. Modifying these permissions can lead to restricted access for essential system services, potentially causing service disruptions. Proper care is necessary when altering permissions on critical directories.
Reference: Alibaba Cloud ECS Linux Best Practices
Cloud computing adopts a common model in distributed systems, distributing computing tasks to a resource pool comprising many computers. This elastic use of the resource pool allows applications to obtain computing capacity, storage space, and message services as needed.
Which of the following statements are correct about the advantages of public cloud computing over traditional IDC? (Choose four.)
- A . A cloud computing user can quickly deploy applications
- B . A cloud computing user has more flexibility and scalability
- C . A cloud computing user can save the cost of building the infrastructure
- D . A cloud computing user has less management and maintenance work
- E . A cloud computing user can fully manage and control the underlying infrastructure
A, B, C, D
Explanation:
Public cloud computing offers advantages such as rapid deployment, increased flexibility and scalability, reduced costs associated with infrastructure, and minimized management and maintenance efforts. Option E is incorrect, as cloud providers typically manage the underlying infrastructure, and users do not have full control over it. Cloud computing abstracts the infrastructure layer, allowing users to focus on applications without needing to manage physical resources.
Reference: Alibaba Cloud Public Cloud Benefits
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. To ensure ECS instances created by Auto Scaling can correctly respond to user requests without additional configuration, applications deployed on these ECS instances must be _______________.
- A . Stateless and horizontally scalable
- B . Stateful
- C . Stateless and idempotent
- D . All data is locally stored on ECS instance disks
A
Explanation:
Applications deployed on ECS instances that are managed by Auto Scaling should be stateless and horizontally scalable. Stateless applications do not store session data or any critical information on a single instance, allowing them to be replicated or terminated without affecting the application’s overall functionality. Horizontal scalability ensures that more instances can handle additional traffic as demand increases. This setup allows Auto Scaling to add or remove instances seamlessly without requiring reconfiguration.
Reference: Alibaba Cloud Auto Scaling Best Practices
Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost-effective storage service. One of the special characteristics of OSS is its superior data reliability, because of its underlying backup technology and policies.
Which of the following statements about OSS backup is correct? (Single answer)
- A . OSS supports 3 internal data copies, so the data can be manually recovered should there be any problem.
- B . Customer has to safeguard their own data. OSS provides various backup interfaces to facilitate offsite backups.
- C . OSS leverages RAID0+1 configuration of its underlying physical hard disks. There is no impact even if 2 hard disks were to fail simultaneously.
- D . OSS supports 3 internal data copies, no human intervention is required to recover the data when anything goes wrong.
If users use Alibaba Cloud Anti-DDoS Basic service, when the attack traffic exceeds the service upper limit, the black hole policy will then be triggered; after that, the users’ servers can still provide services at a limited speed.
- A . TRUE
- B . FALSE
B
Explanation:
When the black hole policy is triggered by excessive DDoS traffic, the affected server is temporarily isolated from the network to prevent further damage. During this period, no services are available, meaning the server cannot provide limited-speed services.
Reference: Alibaba Cloud Anti-DDoS Basic Documentation
Which of the following methods can be used to connect with the database in RDS for MySQL? (Choose three.)
- A . MySQL-Front
- B . Navicat MySQL
- C . Log on using MySQL commands
- D . SQL Server Management Studio
A, B, C
Explanation:
RDS for MySQL supports connections through tools that are compatible with MySQL, such as MySQL-Front, Navicat MySQL, and command-line MySQL commands. SQL Server Management Studio (SSMS) is designed for Microsoft SQL Server and is not compatible with MySQL, so option D is incorrect.
Reference: Alibaba Cloud RDS for MySQL Connection Options
A Virtual Private Cloud (VPC) is an isolated network environment that is completely isolated from each other The following statements about VPC are correct_________. (Number of correct answers:
2)
- A . Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network.
- B . Subnets can be divided like the traditional network environment. Different cloud servers within each subnet are connected by the same router and different subnets are interconnected by switches.
- C . ECS instances in a VPC use security group firewalls for Layer 2 network access control.
- D . The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mapped to the outside.
AD
Explanation:
According to the Alibaba Cloud Academy, a VPC is an isolated network environment that is completely isolated from each other. Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network. This means that different VPCs cannot communicate with each other through the tunnel ID. Subnets are not divided like the traditional network environment, but rather are logical divisions of the VPC. Different cloud servers within each subnet are connected by the same router, but different subnets are interconnected by route tables, not switches. ECS instances in a VPC use security group firewalls for Layer 4 network access control, not Layer 2. The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mapped to the outside, such as NAT Gateway or EIP.
Reference: ACP Cloud Computing Certification Preparation Course – Internetworking with VPC, Alibaba Cloud VPC User Guide
A startup video streaming company deploys its service on Alibaba Cloud Elastic Compute Service (ECS) Christmas is coming soon and the CEO knows that they need to prepare more computing resources However, they don’t want to purchase a large number of Elastic Compute Service (ECS) instances tor a long period of time. Instead, they want to buy ECS instances for a short period of time and release them after the event is over.
Which of the following billing methods of ECS is the most suitable?
- A . Pay-As-You-Go Only
- B . Pay-As-You-Go with Reserved Instances
- C . Subscription with Reserved Instances
- D . Pay-As-You-Go with Savings Plan
A
Explanation:
Pay-As-You-Go is a billing method that allows you to pay for resources after you use them. You are billed based on the actual usage of resources, such as the number of hours that an ECS instance runs or the amount of data that is transferred. Pay-As-You-Go is suitable for scenarios where the demand for resources is unpredictable, flexible, or short-term 1. Pay-As-You-Go has the following advantages for the startup video streaming company:
No upfront payment: The company does not need to pay any fees in advance when they purchase ECS instances. They only pay for the resources that they actually use, which can help them save costs and optimize their cash flow 1.
Flexible scaling: The company can easily scale up or down their ECS instances based on the actual demand for their service. They can add more ECS instances during peak hours or events, such as Christmas, and release them when the demand drops. They can also change the configurations of their ECS instances at any time, such as upgrading the CPU, memory, or bandwidth 1.
No long-term commitment: The company does not need to commit to a long-term contract or subscription when they use Pay-As-You-Go. They can release their ECS instances at any time without incurring any penalties or fees. They can also switch to other billing methods, such as Subscription or Savings Plan, if their business needs change 1.
The other billing methods of ECS are not as suitable as Pay-As-You-Go for the company’s scenario, for the following reasons:
Pay-As-You-Go with Reserved Instances: Reserved Instances are a type of discount coupon that can be used to deduct a portion of the fees incurred by Pay-As-You-Go instances that match the attributes of the Reserved Instances, such as region, zone, instance type, and operating system2. Reserved Instances require upfront payment and have a fixed term of one year or three years. They are suitable for scenarios where the demand for resources is stable and predictable, and where the user wants to enjoy lower prices than Pay-As-You-Go2. However, for the company’s scenario, Reserved Instances are not a good option, because they do not need to purchase a large number of ECS instances for a long period of time, and they want to have more flexibility and scalability in their resource management.
Subscription with Reserved Instances: Subscription is a billing method that allows you to pay for resources in advance for a specific period of time, such as one month, one year, or three years. You are billed based on the specifications and duration of the resources that you purchase, regardless of whether you use them or not. Subscription is suitable for scenarios where the demand for resources is stable and long-term, and where the user wants to enjoy lower prices than Pay-As-You-Go3. Subscription with Reserved Instances can further reduce the cost of Subscription instances by applying the Reserved Instances discounts to them2. However, for the company’s scenario, Subscription with Reserved Instances are not a good option, because they do not want to pay for resources in advance or commit to a long-term contract, and they want to have more flexibility and scalability in their resource management.
Pay-As-You-Go with Savings Plan: Savings Plan is a billing method that allows you to commit to a consistent amount of usage (measured in USD/hour) for a one-year or three-year term, and in exchange, receive a lower price for that usage4. Savings Plan can be applied to any Pay-As-You-Go instances that match the attributes of the Savings Plan, such as region, instance family, or operating system4. Savings Plan is suitable for scenarios where the demand for resources is stable and predictable, and where the user wants to enjoy lower prices than Pay-As-You-Go and more flexibility than Subscription4. However, for the company’s scenario, Savings Plan is not a good option, because they do not want to commit to a consistent amount of usage for a long period of time, and they want to have more flexibility and scalability in their resource management.
Reference: Pay-As-You-Go – Elastic Compute Service – Alibaba Cloud, Reserved Instances – Elastic Compute Service – Alibaba Cloud, Subscription – Elastic Compute Service – Alibaba Cloud, Savings Plan – Elastic Compute Service – Alibaba Cloud