無料で使えるACA-Cloud1サンプル問題で100%カバー率のリアル試験問題（更新された74問あります)
今すぐダウンロード！リアルAlibaba Cloud ACA-Cloud1試験問題集テストエンジン試験問題
ACA-Cloud1試験は、50問の多肢選択問題からなり、90分で完了する必要があります。この試験は、英語と簡体字中国語の両方で利用可能で、オンラインまたはプロクター付きテストセンターで受験することができます。試験の合格点は60％であり、試験センターの場所によって試験の費用が異なります。試験に合格した個人は、グローバルに認められ、クラウドコンピューティングに関する知識と専門知識を示すために使用できる公式のAlibaba Cloud ACA-Cloud1認定を受け取ります。
ACA-Cloud1試験は、候補者のクラウドコンピューティングに関する知識と理解の包括的な評価です。クラウドコンピューティングアーキテクチャ、クラウドストレージ、クラウドネットワーク、セキュリティなど、幅広いトピックをカバーしています。この試験は、Alibaba Cloud製品を使用してクラウドソリューションを設計、展開、管理する候補者の能力を評価するように設計されています。
質問 # 24
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 statement about OSS backup is correct?
- 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 supports 3 internal data copies, no human intervention is required to recover the data when anything goes wrong.
- D. OSS leverages RAID0+1 configuration of its underlying physical hard disks. There is no impact even if
2 hard disks were to fail simultaneously.
正解：B
質問 # 25
In which of the following cases would you need to apply an ICP license? (Choose three.)
- A. Launch your online shop in China
- B. Open your office in China
- C. Accelerate your Overseas Website in China
- D. Launch your website in China
正解：A、B、D
解説：
Explanation/Reference: https://www.alibabacloud.com/icp
質問 # 26
Which of the following statements to OSS bucket is not correct?
- A. Bucket name can be changed after creation
- B. There is no limitation to objects number inside one bucket
- C. Every bucket should have a unique name
- D. Every user can create more than one bucket
正解：A
解説：
Explanation
A bucket is a container for objects in Object Storage Service (OSS). Every user can create more than one bucket, but every bucket should have a unique name in OSS. There is no limitation to the number of objects inside one bucket. However, the bucket name cannot be changed after creation. You cannot customize, change, or request a namespace name change1. If you want to modify an object, you must upload a new object with the same name as the existing one to replace it2. References: 3: Create a bucket - Object Storage Service - Alibaba Cloud3 4: Manage objects in a versioning-enabled bucket - Object Storage Service - Alibaba Cloud4 1: Understanding Object Storage Namespaces - Oracle1 2: OSS Concepts - Alibaba Object Storage Service Course - Cloud Academy2
質問 # 27
Some applications may encounter large traffic fluctuations within a short period. When ECS is used with
, the number of ECS instances is automatically adjusted based on traffic.
- A. Auto Scaling
- B. OSS
- C. Server Load Balancer
- D. RDS
正解：A
解説：
Reference:
https://www.alibabacloud.com/help/doc-detail/25371.htm
質問 # 28
Server Load Balancer supports health checks for ECS instances and allows user to specify the frequency. If an ECS instance does not qualify the health check, traffic will not be forwarded to that instance, thereby ensuring application availability.
- A. TRUE
- B. FALSE
正解：A
解説：
Explanation
Server Load Balancer (SLB) is a service that distributes traffic among multiple ECS instances to improve the service capabilities of applications. SLB monitors the health of ECS instances in real time and automatically isolates unhealthy instances from the server pool according to the configured health check policy. This ensures that the traffic is only forwarded to healthy instances, thereby improving the availability and fault tolerance of applications. References: ACA Cloud Computing Certification - Alibaba Cloud Academy, E-Learning Courses
- Alibaba Cloud Academy, Server Load Balancer - Alibaba Cloud Documentation Center
質問 # 29
A video streaming company uses SLB to distribute user requests to 30 ECS instances (the 30 ECS instances have the same configuration). Yet, the company finds that the service traffic soars dramatically every night from 20:00 to 02:00. According to their calculation, the evening traffic is 100% higher than the traffic in other periods of time. To properly respond to user requests, which of the following methods is most preferred from the perspective of cost and implementation simplicity?
- A. Create 30 ECS instances based on the custom image and add them to SLB. Then, configure weights for these ECS instances to respond to user requests every night from 20:00 to 02:00, and reset those weights to zero for other periods of time.
- B. Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.
- C. Manually create 30 ECS instances using the custom image, and then add them to SLB every night before 20:00 and remove them after 02:00.
- D. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.
正解：D
解説：
Reference:
https://www.alibabacloud.com/product/auto-scaling
質問 # 30
RDS provides whitelist access policies. You can set permitted IP addresses and IP network segments to effectively prevent hackers from attacking the server by port scanning.
- A. FALSE
- B. TRUE
正解：A
解説：
Explanation/Reference: https://apsarastackdocument.oss-cn-hangzhou.aliyuncs.com/01_ApsaraStackEnterprise/V3.5.2- intl-en/Alibaba%20Cloud%20Apsara%20Stack%20Enterprise%201808%20Security%20Whitepaper%20-%
2020180831.pdf
質問 # 31
Alibaba Cloud Monitor service stems from years of experience of server monitoring technology in Alibaba group, leveraging the powerful data analysis capability of Alibaba cloud computing platform to provide monitoring service for various clients' applications and servers. A user receives an alert saying that the IOPS utilization rate for an ECS instance exceeds 80%. Yet, he/she is not sure how to handle the situation, the user may obtain help from Alibaba Cloud through the below methods ____________________? (Choose three.)
- A. Check ECS or CloudMonitor product documents.
- B. You cannot obtain any help from Alibaba Cloud.
- C. Open a ticket to Alibaba Cloud help desk.
- D. Look for answers in Alibaba Cloud forum.
正解：A、C、D
質問 # 32
Alibaba Cloud CDN can directly accelerate the access to the files stored in OSS and reduce OSS traffic costs.
- A. TRUE
- B. FALSE
正解：A
質問 # 33
Alibaba Cloud relational database service (RDS) is a stable, reliable and elastic online database service. RDS supports below database types? (Choose three.)
- A. SQL Server
- B. MySQL
- C. PostgreSQL
- D. Oracle database
正解：A、B、C
解説：
Explanation
Alibaba Cloud relational database service (RDS) is a stable, reliable and elastic online database service that supports various database engines, such as MySQL, SQL Server, PostgreSQL, MariaDB, and PPAS (PostgreSQL with Oracle compatibility)1. RDS provides high availability, backup and recovery, security, and monitoring features for your databases. RDS does not support Oracle database, which is a proprietary database system developed by Oracle Corporation2. If you need to use Oracle database on Alibaba Cloud, you can deploy it on an ECS instance or use the Oracle Database Backup Service3.
References: 1: Alibaba Cloud Academy, "RDS Concepts",
https://edu.alibabacloud.com/elearning/lesson/ACA-Cloud-Computing-Certification/lesson-5-rds-concepts 2:
Oracle, "Oracle Database", https://www.oracle.com/database/ 3: Alibaba Cloud, "Oracle Database Backup Service", https://www.alibabacloud.com/product/oracle-database-backup-service
質問 # 34
Which method is not supported by OSS to create a bucket?
- A. through cloud console
- B. through OSS API/SDK
- C. through oss cmd tool
- D. through ECS instance filesystem directory operation
正解：D
解説：
Explanation
ECS instance filesystem directory operation is not a supported method to create a bucket in OSS. A bucket is a container for objects in OSS, and it is not related to the filesystem of an ECS instance. To create a bucket in OSS, you can use one of the following methods1:
through OSS API/SDK: You can use the OSS API or SDK to call the PutBucket operation to create a bucket. The OSS API and SDK support various programming languages, such as Java, Python, PHP, C#, and Node.js2.
through oss cmd tool: You can use the oss cmd tool, which is a command-line tool based on the OSS SDK for Python, to create a bucket by using the ossutil mb command3.
through cloud console: You can use the Alibaba Cloud console to create a bucket by following the steps in the documentation4. References: 1: Create buckets - Object Storage Service - Alibaba Cloud Documentation Center2: PutBucket - API Reference| Alibaba Cloud Documentation Center3: Create a bucket - OSSUTIL User Guide| Alibaba Cloud Documentation Center4: Create a bucket - Object Storage Service - Alibaba Cloud Documentation Center.
質問 # 35
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. It supports adding an existing ECS instance into the scaling group but imposes certain requirements on instance region. In this case, which of the following statements is true?
- A. Each scaling group can span up to two regions. After adding the ECS instance, the number of regions of all the ECS instances in the scaling group must be no greater than two.
- B. The instance and the scaling group must be in the same region but not necessarily the same zone.
- C. The instance and the scaling group must be in the same region and zone.
- D. The instance and the scaling group can be in different regions and zones.
正解：C
質問 # 36
SQL injection is a common application layer attack, usually through building special input parameters and pass it to web applications to steal or sabotage the application data. Which of the following is the target for SQL injection?
- A. Web application
- B. Database
- C. Confidential files on the server
- D. Pictures on server
正解：B
解説：
Explanation
SQL injection is a common application layer attack that targets the database of a web application. SQL injection exploits a security vulnerability in the application's software, such as incorrect filtering of user input, that allows an attacker to send malicious SQL statements to the database. These statements can then be executed to steal, modify, or delete data, or even execute commands on the server1. SQL injection can also bypass authentication and authorization mechanisms, and sometimes even impersonate or damage the underlying system2. SQL injection is one of the most common and dangerous web attacks, and it can cause serious damage to the confidentiality, integrity, and availability of web applications3. References: 1: SQL Injection - OWASP2: SQL Injection - Web Application Firewall - Alibaba Cloud Documentation Center3: Web Application Firewall:What is WAF? - Alibaba Cloud.
質問 # 37
Which of the following is not the database type supported by RDS?
- A. SQL Server
- B. Postgre SQL
- C. Oracle database
- D. MySQL
正解：C
解説：
Explanation
RDS (Relational Database Service) is a fully managed online database service that supports various database engines, such as MySQL, SQL Server, PostgreSQL, MariaDB, and PPAS (PostgreSQL with Oracle compatibility)1. However, RDS does not support Oracle database, which is a proprietary database system developed by Oracle Corporation2. If you need to use Oracle database on Alibaba Cloud, you can deploy it on an ECS instance or use the Oracle Database Backup Service3.
References: 1: Alibaba Cloud Academy, "RDS Concepts",
https://edu.alibabacloud.com/elearning/lesson/ACA-Cloud-Computing-Certification/lesson-5-rds-concepts 2:
Oracle, "Oracle Database", https://www.oracle.com/database/ 3: Alibaba Cloud, "Oracle Database Backup Service", https://www.alibabacloud.com/product/oracle-database-backup-service
質問 # 38
You are developing a highly available web application using stateless web servers. Which services are suitable for the application? (Choose three.)
- A. OSS
- B. MaxCompute
- C. ECS
- D. SLB
- E. RDS
正解：A、C、E
質問 # 39
Multiple lower-configuration I/O-optimized ECS instances can be used withto deliver a high- availability architecture.
- A. OSS
- B. Server Load Balancer
- C. RDS
- D. Auto Scaling
正解：B
質問 # 40
Your website has oscillating traffic peaks that are difficult to predict in advance. In this scenario, it is recommended to use SLB andtogether with ECS.
- A. Auto Scaling
- B. MaxCompute
- C. RDS
- D. VPC
正解：A
質問 # 41
Which three of the following statements about domain name binding to your OSS bucket are correct? (Choose three.)
- A. Your customized domain name will be audited by Alibaba Cloud
- B. the number of domain names you bind to one bucket can't exceed 20
- C. your customized domain name need to be put on record in MIIT (Ministry of Industry and Information Technology)
- D. mapping a domain name to your bucket endpoint is mandatory
正解：A、B、C
解説：
Explanation
Domain name binding is a feature that allows you to use your own domain name to access your OSS bucket, instead of using the default OSS domain name. Domain name binding has the following requirements and limitations12:
Your customized domain name will be audited by Alibaba Cloud. You need to submit a domain name binding request and wait for approval before you can use your own domain name to access your OSS bucket.
Your customized domain name need to be put on record in MIIT (Ministry of Industry and Information Technology). This is a mandatory requirement for all websites that are hosted in mainland China. You need to provide your domain name information and relevant documents to MIIT and obtain an ICP filing number before you can use your own domain name to access your OSS bucket.
質問 # 42
As a cloud computing service provider, Alibaba Cloud provides security services including. (Choose two.)
- A. Security isolation between cloud computing tenants.
- B. IP white list setting for RDS.
- C. Security operation for underlying hardware of cloud computing.
- D. Application maintenance in ECS instances.
正解：A、C
解説：
Explanation
Alibaba Cloud provides security services for the underlying hardware of cloud computing, such as physical security, network security, host security, and storage security. Alibaba Cloud also provides security isolation between cloud computing tenants, such as virtualization isolation, network isolation, and data isolation. These security services are part of Alibaba Cloud's shared responsibility model, where Alibaba Cloud is responsible for the security of the cloud infrastructure, while customers are responsible for the security of their applications and data on the cloud. References: Alibaba Cloud Security Services, Alibaba Cloud Security & Compliance Center, Shared Responsibility Model
質問 # 43
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