更新された2025年06月公式問題ACP-Cloud1認定にはACP-Cloud1問題集PDF
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質問 # 85
Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low cost, and high reliability. For a website consisting of static pages, they can use OSS to host these static pages.
Meanwhile, using OSS in conjunction with ___________ product for acceleration purposes.
- A. CDN
- B. ECS
- C. Container Service
- D. VPC
正解：A
解説：
Alibaba Cloud CDN (Content Delivery Network) can be used with OSS to accelerate the delivery of static content by caching data at edge nodes closer to end-users. This combination is ideal for static websites, as CDN reduces latency and enhances the loading speed of web pages hosted on OSS. By serving content from multiple distributed nodes, CDN provides users with faster, more efficient access to static resources.
質問 # 86
A startup team developed an app named "Public Image Service," which provides image management services for e-commerce websites. The app includes a self-developed API for file uploads, queries, and deletions, and aims to manage a large number of small images with fast global access. Currently, 500 GB of images and files are uploaded daily. The team is ready to migrate all applications to Alibaba Cloud. They should at least choose Alibaba Cloud ___________________ service. (Choose three.)
- A. Content Delivery Network
- B. Object Storage Service
- C. Auto Scaling
- D. Elastic Compute Service
正解：A、B、D
解説：
For a service focused on storing and providing fast access to a massive amount of images, the team should use:
* Object Storage Service (OSS): For scalable and cost-effective storage of large image datasets.
* Elastic Compute Service (ECS): For running the application's backend and API logic.
* Content Delivery Network (CDN): To cache and accelerate image delivery globally, improving access speed for users worldwide.While Auto Scaling is useful for applications with highly variable compute demands, it is not essential for this setup based on the described requirements.
質問 # 87
The Alibaba Cloud CDN can directly accelerate access to the files stored in OSS and reduce OSS traffic costs.
- A. False
- B. True
正解：B
解説：
The Alibaba Cloud CDN can directly accelerate access to the files stored in OSS and reduce OSS traffic costs. Alibaba Cloud CDN is a global network of points of presence (POPs) that are distributed across the globe. Alibaba Cloud CDN serves to reduce back-to-origin traffic. This in turn prevents network congestion and ensures that content is delivered with minimal latency across regions in various use cases1. Alibaba Cloud CDN caches resources from your origin servers on POPs located across the globe. Whenever customers access your resources, the resources are served from the nearest POP instead of the origin server. This helps prevent lengthy back-to-origin requests and reduces loads on origin servers, delivering better experience to your customers and reducing back-to-origin costs1. Alibaba Cloud CDN also provides IPv6 support on some POPs1. You can use Alibaba Cloud CDN to accelerate access to Object Storage Service (OSS). If you directly access OSS resources, the access speed varies based on the region in which the buckets are located and is limited by the outbound bandwidth of OSS2. The Internet traffic cost of CDN is lower than that of OSS, and the back-to-source traffic cost from CDN to OSS is also lower than a user access to OSS directly2. Therefore, using CDN can reduce the traffic cost of OSS. References: Use Alibaba Cloud CDN to accelerate access to OSS, What is Alibaba Cloud CDN?
質問 # 88
To connect a VPC with your traditional IDC (Internet Data Center), Alibaba Cloud currently supports the following methods: _______________? (Choose two.)
- A. Leased line connection
- B. HTTP agent
- C. VPN
- D. Connection through a stepping stone
正解：A、C
解説：
Alibaba Cloud provides two main options for securely connecting a VPC with a traditional IDC: VPN (Virtual Private Network) and a dedicated leased line connection. These methods enable stable and secure communication between the VPC and on-premises environments. HTTP agents and stepping stones (options B and C) are not standard or secure methods for IDC-VPC connectivity.
質問 # 89
Alibaba Cloud VPC utilizes tunneling technology. Each VPC has a unique tunnel ID, and a tunnel ID corresponds to a virtual network. As a result, VPC can achieve a similar isolation effect as that of a traditional VLAN.
- A. FALSE
- B. TRUE
正解：B
解説：
Alibaba Cloud VPC uses tunneling technology with unique tunnel IDs to create isolated virtual networks that offer similar isolation capabilities as VLANs in traditional networks. This allows each VPC to function as an independent, secure network environment within the cloud, ensuring traffic separation and resource isolation.
質問 # 90
You are using Auto Scaling with one scaling group already created, then you want to execute a task at a specific time such as removing 1 ECS instance every night at 00:00. To achieve this, which of the following operations should be performed'? (Number of correct answers; 2)
- A. Create an event-triggered task.
- B. Create a scaling rule
- C. Create a scheduled task.
- D. Create a new scaling group.
正解：B、D
質問 # 91
A route table refers to the list of routing entries on a VRouter in an Alibaba Cloud VPC. You can create/delete any route tables in a VPC.
- A. True
- B. False
正解：B
解説：
In Alibaba Cloud VPCs, only custom route tables can be created and deleted by users. The default route table associated with each VPC cannot be deleted, although custom routing entries within it can be modified. This limitation ensures the integrity of essential VPC networking components.
質問 # 92
Alibaba Cloud will check source IP addresses that connect to ApsaraDB for RDS through the public internet.
When Alibaba Cloud Situation Awareness detects an alert reporting "a seldom-used IP address connecting to the database," which of the following is the safest way to handle this alert?
- A. Modify the security group policies for ECS instances, and allow only specified IP addresses to connect to the server
- B. This alert does not matter and can be ignored
- C. Log on to RDS console, and view the SQL audit logs to check whether any destructive operation has been performed. If no, you do not need to handle the alert
- D. Log on to Alibaba Cloud console, modify the IP address whitelist for authorized access to RDS, and retain the IP addresses that need to connect to RDS
正解：D
解説：
The safest response to a seldom-used IP alert connecting to ApsaraDB for RDS is to adjust the IP whitelist to allow only trusted IP addresses. By limiting the IP addresses in the whitelist, unauthorized or unfamiliar IP addresses cannot access the database. This approach provides direct control over access to RDS and minimizes potential security risks. Checking SQL audit logs (as suggested in option D) is useful but not sufficient on its own for a comprehensive security response.
質問 # 93
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 CloudMonitor performance metrics (such as the CPU utilization rate)
- A. False
- B. True
正解：B
質問 # 94
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 source IP address that can be seen on the backend ECS instance is the IP address of SLB instead of the clients real IP address.
- A. False
- B. True
正解：B
質問 # 95
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.
- A. TRUE
- B. FALSE
正解：B
解説：
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.
質問 # 96
Availability Zones refer to data centers in the same region with independent power grids and networks. Which of the following statements are true for Zones? (Choose three.)
- A. Whether you place ECS instances in the same Zone depends on the requirements for disaster recovery and network latency.
- B. If your applications require low network latency between ECS instances, it is recommended that you create ECS instances in different Zones.
- C. The network latency between inter-Zone ECS instances is lower.
- D. If the disaster recovery requirements of your applications are demanding, it is recommended that you deploy ECS instances in the same Region and Zone.
- E. Intranet communication is available between different Zones in the same region, and data center-level fault isolation can be achieved between Zones.
正解：A、C、E
解説：
Zones in the same region support low-latency intranet communication, ideal for high-availability deployments with inter-Zone fault isolation. Placement of ECS instances in the same or different Zones depends on the disaster recovery and latency needs of the application.
質問 # 97
Alibaba Cloud Object Storage Service (OSS) provides multiple file uploading modes for different scenarios, which are___________.
(Number of correct answers: 2)
- A. Upload using the SDK
- B. Direct upload from the OSS management console no matter how large the file is
- C. Uploading using the API
- D. Directly copying to/from OSS using portable disks
正解：A、C
解説：
Explanation
Alibaba Cloud Object Storage Service (OSS) is a cloud storage service that allows you to store, retrieve, and manage data in the cloud. OSS provides multiple file uploading modes for different scenarios, such as simple upload, multipart upload, append upload, resumable upload, and cross-region replication. These uploading modes can be implemented by using the API or the SDK provided by OSS. Therefore, options B and D are the correct answers. Option A is not correct because the OSS management console only supports simple upload for files that are smaller than 5 GB. Option C is not correct because OSS does not support directly copying to/from OSS using portable disks. References: Object Storage Service:Simple upload, Object Storage Service:Multipart upload, Object Storage Service:OSS tools
質問 # 98
Which of the following statements is NOT correct, when comparing RDS with a self-built database?
- A. RDS features a high availability of 99 95% while self-built databases require you to implement data protection primary-standby replication, and RAID all by yourself.
- B. RDS provides automatic backup while self-built databases require you to prepare storage space for backup copies and regularly verify that these copies can be restored.
- C. RDS requires no O&M while self-built database require a dedicated DBA for maintenance, which results in high HR costs.
- D. Self-built database support quick deployment and elastic scaling.
正解：D
質問 # 99
You have created two Alibaba Cloud VPCs in two different regions To establish communication between these two VPCs via the Intranet, you can________.
- A. Use the VRouter to create a new route table to enable the communication
- B. Create a new access rule through the Security Group to enable the communication
- C. Use CEN to establish communication between VPCs
- D. No operation is needed, as VPCs under the same account are connected through the Intranet by default
正解：C
質問 # 100
When creating an ECS instance in your Alibaba Cloud VPC, you must specify a VSwitch for that instance at the same time. Otherwise, you will not be able to create this ECS instance.
- A. False
- B. True
正解：B
解説：
Explanation
When creating an ECS instance in your Alibaba Cloud VPC, you must specify a VSwitch for that instance at the same time. Otherwise, you will not be able to create this ECS instance. This is true according to the Alibaba Cloud documentation on ECS1. A VSwitch is a basic network device of a VPC and is used to connect different cloud product instances deployed in a VPC2. A VSwitch defines a network segment within a VPC and allows you to specify the IP address range, network mask, and gateway for the network segment2. When you create an ECS instance, you must select a VSwitch that belongs to the same zone as the ECS instance3. If you do not specify a VSwitch, the ECS instance will not be able to communicate with other cloud product instances in the VPC or access the Internet. References: 1: Create an instance by using the provided wizard - Elastic Compute Service - Alibaba Cloud Documentation Center 2: What is a VSwitch? - Virtual Private Cloud - Alibaba Cloud Documentation Center 3: Create an instance by using the advanced wizard - Elastic Compute Service - Alibaba Cloud Documentation Center : [VPC FAQ - Virtual Private Cloud - Alibaba Cloud Documentation Center]
質問 # 101
By using ApsaraDB for RDS to implement read/write splitting, which of the following can be achieved?
(Number of correct answers 2)
- A. Write requests are distributed to multiple instances.
- B. Read/write requests to the database are separated.
- C. Both read and write requests are distributed to multiple instance
- D. Read requests are distributed to multiple instances.
正解：B、D
解説：
ApsaraDB for RDS is a stable and reliable online database service that supports MySQL, SQL Server, PostgreSQL, MariaDB, and PPAS. ApsaraDB for RDS provides a read/write splitting feature that allows you to create read-only RDS instances, which can offload read requests from the primary RDS instance of your database system1. Read/write splitting is implemented by using a dedicated proxy endpoint, which routes read and write requests to different RDS instances based on the SQL statements and the read weights of the read- only instances2. By using ApsaraDB for RDS to implement read/write splitting, you can achieve the following benefits21:
* Read requests are distributed to multiple instances. This can improve the read performance and availability of your database system, as well as balance the load among the read-only instances. You can specify the read weights of the read-only instances to control the distribution of read requests.
* Read/write requests to the database are separated. This can reduce the pressure on the primary RDS instance and ensure the stability and security of the write operations. You only need to connect to the proxy endpoint, and the proxy will automatically route the read and write requests to the appropriate RDS instances.
The other statements are not correct, as write requests are not distributed to multiple instances, but only sent to the primary RDS instance2; and both read and write requests are not distributed to multiple instances, but separated by the proxy endpoint2. References: [ApsaraDB for RDS - Alibaba Cloud], Read/write splitting - - Alibaba Cloud Documentation Center, Use the read/write splitting feature to increase the processing capability of an ApsaraDB RDS instance
質問 # 102
OSS supports multi-part uploading for large files, namely dividing a large file into multiple parts and uploading them in order. This function is suitable for scenarios such as uploading large files or uploading files with poor connectivity.
After completing all the multi-part uploading tasks, if you forget to invoke the "Complete Multipart Upload" interface, there will be fragment files left in OSS, occupying bucket storage space-To facilitate deleting those files, OSS provides the________function.
- A. Bucket clearing
- B. OpenAPI batch deletion
- C. Online batch deletion
- D. Fragment management
正解：D
解説：
Explanation
OSS provides the fragment management function to help you delete the fragment files left in OSS after you forget to invoke the "Complete Multipart Upload" interface. Fragment management allows you to list, delete, or restore the fragment files in a bucket. You can use the OSS console, OSS SDKs, or OSS APIs to perform fragment management operations. OpenAPI batch deletion, online batch deletion, and bucket clearing are not the functions provided by OSS to delete the fragment files.
質問 # 103
Which of the following statements is true for Alibaba Cloud RDS?
- A. All editions of RDS support HA mode.
- B. Multiple databases can be created for one instance.
- C. Databases with the same name are allowed to be hosted on the same instance.
- D. Physical host CPU and memory resources are not shared among the common type of RDS instances.
正解：B
解説：
Alibaba Cloud RDS allows multiple databases to be created on a single instance. However, each database within the same instance must have a unique name, and resources are shared among instances unless specified otherwise. Additionally, not all RDS editions support High Availability (HA) mode; HA is typically available in certain editions, like RDS for MySQL and RDS for PostgreSQL.
質問 # 104
Which of the following database engines are compatible with RDS? (Choose three.)
- A. PostgreSQL
- B. MySQL
- C. PPAS
- D. SQL Server
- E. Sybase
正解：A、B、D
解説：
Alibaba Cloud RDS supports several popular database engines, including MySQL, PostgreSQL, and SQL Server. PPAS (PostgreSQL Plus Advanced Server) is also supported but not Sybase, which is not available as an RDS option on Alibaba Cloud.
質問 # 105
Alibaba Cloud Content Delivery Network (CDN) is a distributed network that is built and overlaid on the bearer network Moreover it is composed of edge node server clusters distributed across different regions. It replaces the traditional data transmission mode, which is centered on Web servers. When using Alibaba Cloud CDN, a user's request wilt first reach the edge node, and then receive data from the origin site by means of back-to-source Moreover, the admin can obtain visitor's real IP on the origin site. Which of the following descriptions relate to "obtaining visitors real IP" are correct? (Number of correct answers: 2)
- A. "Visitor's real IP" is saved in "X-Forwarded-For" header in HTTP protocol. It can be directly obtained in the user-defined LOG of Apache and Nginx.
- B. You can one-step activate the "recording visitor's real IP" function in Alibaba Cloud CDN console to directly view the visitor's real IP in the access log.
- C. "Visitor's real IP" can only be obtained by modifying the application
- D. In Windows, if IIS is used: after installing "F5XForwardedFor" extension module. 'Visitor's real IP" can then be seen in the log.
正解：A、D
質問 # 106
You have bought an ECS instance on Alibaba Cloud. After deploying a Python environment on it, which of the following is the easiest and quickest way to monitor whether the Python process is running normally and report an alert if the process is accidentally terminated?
- A. Use process monitoring of ECS instance monitoring.
- B. Use site monitoring.
- C. Log on to the ECS instance console.
- D. Write a script for monitoring by yourself.
正解：A
解説：
ECS instance monitoring provides a process monitoring feature that allows you to check the status of specific processes, such as a Python process, and set alerts for automatic notifications if the process terminates unexpectedly. This method is quicker and more efficient than writing a custom script or manually logging in to the console.
質問 # 107
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