最新ACA-Cloud1テスト材料には有効なACA-Cloud1テストエンジン
ACA-Cloud1更新された試験問題集で[2024年最新] 練習には有効な試験問題集
ACA-Cloud1認定試験は、実用的で実践的な学習アプローチに基づいています。候補者は、クラウドコンピューティングで実践的な経験を持ち、クラウドコンピューティングの概念を強く理解する必要があります。試験は多肢選択の質問で構成されており、候補者は特定の時間枠内でそれらに答える必要があります。
Alibaba Cloud ACA-Cloud1（ACA Cloud Computing Associate）認定試験は、クラウドコンピューティングの専門知識を実証したい個人向けに設計された専門レベルの認定です。この認定試験では、クラウドインフラストラクチャ、ストレージ、ネットワーキング、セキュリティ、管理など、幅広いクラウドコンピューティングの概念とテクノロジーをカバーしています。これは、クラウドコンピューティングでキャリアを進め、クラウドコンピューティングサービスの大手プロバイダーの1つであるAlibaba Cloudと協力しようとしているITの専門家にとって素晴らしい機会です。
Alibaba Cloud ACA-Cloud1 認定試験の出題範囲：
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質問 # 20
When we talk about the 'Elastic' feature for ECS product, we are not talking about _____________.
- A. Elastic Network
- B. Elastic Administration
- C. Elastic Computing
- D. Elastic Storage
正解：B
質問 # 21
Which of the following statements is wrong when comparing RDS with self-built database?
- A. RDS requires no O&M while self-built database requires a dedicated DBA for maintenance, which results in high HR cost.
- B. RDS provides automatic backup while self-built database requires you to prepare storage space for backup copies and regularly verify that these copies can be restored.
- C. RDS features a high availability of 99.95% while self-built database requires you to implement data protection, primary-standby replication, and RAID all by yourself.
- D. Self-built database supports quick deployment and elastic scaling.
正解：D
質問 # 22
When using Alibaba Cloud OSS, you can set access control in 3 different levels, which are (Choose three.)
- A. Bucket level
- B. RAM account level
- C. Object level
- D. Directory level
正解：A、C、D
質問 # 23
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. RDS
- B. Server Load Balancer
- C. OSS
- D. Auto Scaling
正解：D
解説：
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/25371.htm
質問 # 24
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. Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.
- B. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.
- C. 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.
- D. 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.
正解：B
質問 # 25
Company builds a music download website based on OSS and ECS, and users can download mp3 files after registering for the website. Recently, the public network traffic to the OSS has doubled but the increase of registered users is less than 10%. After in-depth analysis, engineers find that many user download requests are raised from search engine but not the website itself. In this case, which of the following measures is thought to be able to address this issue.
- A. Introduce SLB for extra protection.
- B. Changes the website access mode to HTTPS.
- C. Migrates music files from the OSS to the data disks for ECS instances.
- D. Limits access sources by configuring "Anti-leech settings" of OSS bucket attributes.
正解：D
解説：
Explanation
The issue that Company B faces is that their music files stored in OSS are being downloaded by unauthorized users who access them through search engines, rather than through their website. This is called leeching, which is a form of bandwidth theft that consumes the OSS traffic and increases the cost for Company B. To address this issue, Company B can limit the access sources by configuring the "Anti-leech settings" of OSS bucket attributes. Anti-leech settings allow the bucket owner to specify a referer whitelist, which is a list of domain names that are allowed to access the OSS resources. The referer is a part of the HTTP header that indicates the source URL of the request. By setting a referer whitelist, Company B can prevent leeches from accessing their music files directly from search engines or other websites, and only allow access from their own website domain name. This way, Company B can protect their OSS resources from unauthorized access and reduce their OSS traffic costs. The other options are not effective or relevant for addressing the issue.
Migrating music files from OSS to data disks for ECS instances would increase the storage and computing costs for Company B, and also reduce the scalability and availability of their music files. Changing the website access mode to HTTPS would enhance the security and encryption of the website, but it would not prevent leeches from accessing the OSS resources through search engines. Introducing SLB for extra protection would improve the load balancing and high availability of the ECS instances, but it would not affect the access control of the OSS resources. References: OSS Anti-Leech Referer Configuration and Error Elimination
質問 # 26
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. RDS
- B. Server Load Balancer
- C. OSS
- D. Auto Scaling
正解：D
質問 # 27
A company wants to use Alibaba Cloud service to replace their self-built database, which of the following services should it choose?
- A. Alibaba Cloud CDN (Content Delivery Network)
- B. Deploy more ECS instances
- C. Server Load Balancer (SLB)
- D. AsparaDB for RDS
正解：B
質問 # 28
Which three of the following statements about domain name binding to your OSS bucket are correct? (Choose three.)
- A. the number of domain names you bind to one bucket can't exceed 20
- B. your customized domain name need to be put on record in MIIT (Ministry of Industry and Information Technology)
- C. mapping a domain name to your bucket endpoint is mandatory
- D. Your customized domain name will be audited by Alibaba Cloud
正解：A、B、D
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 # 29
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. Database
- B. Web application
- C. Confidential files on the server
- D. Pictures on server
正解：A
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 # 30
RDS for MySQL is a PaaS, which means after creating the RDS instance, the user does not need to take care of the underlying OS, runtime environment of software packages. These would be taken care of by Alibaba Cloud.
- A. TRUE
- B. FALSE
正解：B
解説：
Explanation/Reference:
質問 # 31
In which of the following cases would you need to apply an ICP license? (Choose three.)
- A. Launch your website in China
- B. Launch your online shop in China
- C. Accelerate your Overseas Website in China
- D. Open your office in China
正解：A、B、D
質問 # 32
Which of the following statements to OSS bucket is not correct?
- A. There is no limitation to objects number inside one bucket
- B. Bucket name can be changed after creation
- C. Every user can create more than one bucket
- D. Every bucket should have a unique name
正解：B
解説：
Reference:
https://www.alibabacloud.com/help/doc-detail/31885.htm?spm=a2c63.p38356.a3.3.43f03bb9a3KjLl
質問 # 33
A/Anis a copy of data on a disk at a certain point in time.
- A. image
- B. template
- C. EIP
- D. snapshot
正解：D
質問 # 34
Which of the following scenarios is applicable to use RDS read-only instances?
- A. Improves RDS storage capabilities.
- B. Reduces the read pressure on the RDS primary instance.
- C. Reduces the write pressure on the RDS primary instance.
- D. Implements data backtracking for the last two days.
正解：B
解説：
Explanation
ApsaraDB RDS for MySQL is a cloud-based relational database service that provides secure, cost-effective, and scalable database solutions for various applications. RDS for MySQL supports creating read-only instances that are synchronized with the primary instance in real time. Read-only instances can handle read requests from applications and reduce the read pressure on the primary instance. This can improve the performance and availability of the database system. Read-only instances can also be used for scenarios such as report analysis, data backup, and disaster recovery.
References:
Overview of read-only ApsaraDB RDS for MySQL instances
ACA Cloud Computing Certification Exam Preparation Course
Alibaba Cloud Computing Exam Question 2022
質問 # 35
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. If 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. We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen.
- C. 100% of loads will be assigned to ecs_inst1, and the rest 4 ECS instances will stay idle.
- D. Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1.
正解：B
解説：
Explanation
Alibaba Cloud Server Load Balancer (SLB) is a service that distributes network traffic across multiple ECS instances to improve the service capabilities of applications. SLB supports different load balancing algorithms, such as round robin, weighted round robin, and least connections. When using the weighted round robin algorithm, SLB assigns different weights to backend ECS instances based on their processing capabilities. The higher the weight of a backend ECS instance, the more requests it will receive from SLB. However, the weight of a backend ECS instance is not the only factor that determines the load distribution. The number and the weight of other backend ECS instances in the same server group also affect the load balancing result.
Therefore, without knowing the weight settings of the remaining 4 ECS instances, we cannot tell what would happen to the load distribution among the 5 ECS instances. The other statements are incorrect because they assume a fixed or proportional load distribution based on the weight of ecs_inst1, which is not necessarily true.
References:
Alibaba Cloud Server Load Balancer
[ACA Cloud Computing Certification Exam Preparation Course]
Alibaba Cloud Computing Exam Question 2022
質問 # 36
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. It supports adding existing ECS instances into the scaling group, whose status however must be________.
- A. Preparing
- B. Created
- C. Stopped
- D. Running
正解：D
質問 # 37
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. Which of the following is not the feature supported by Alibaba Cloud Auto Scaling?
- A. Elastic Scale-Out
- B. Elastic Self-Diagnostic
- C. Elastic Self-Health
- D. Elastic Scale-In
正解：B
解説：
Explanation
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. Auto Scaling supports the following features12:
Elastic Scale-Out: Automatically adds ECS instances to handle increased workloads.
Elastic Scale-In: Automatically removes ECS instances to reduce costs when workloads decrease.
Elastic Self-Health: Automatically replaces unhealthy ECS instances to ensure high availability and reliability.
Scheduled Scaling: Automatically adds or removes ECS instances based on predefined schedules.
Predictive Scaling: Automatically predicts future workloads and adjusts ECS instances accordingly.
Elastic Self-Diagnostic is not a feature supported by Alibaba Cloud Auto Scaling. It is a fictitious term that does not exist in the Alibaba Cloud documentation or course materials. References: 1: Auto Scaling:
Automatically Adjusts Computing Resources - Alibaba Cloud 2: Auto Scaling:What is Auto Scaling? - Alibaba Cloud
質問 # 38
Server Load Balancer supports protocols like. (Choose four.)
- A. TCP
- B. MQTT
- C. UDP
- D. HTTP
- E. MPLS
- F. HTTPS
正解：A、C、D、F
解説：
Explanation
Comprehensive protocol support - ICMP, TCP, UDP, HTTP, HTTPS,
質問 # 39
As a cloud computing service provider, Alibaba Cloud provides security services including. (Choose two.)
- A. Application maintenance in ECS instances.
- B. Security operation for underlying hardware of cloud computing.
- C. IP white list setting for RDS.
- D. Security isolation between cloud computing tenants.
正解：B、D
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 # 40
You built an online shop using Alibaba Cloud services (ECS, RDS, ...etc.) and very soon you'll have a campaign that every customer that invites 3 friends will get a 50% off coupon. To avoid HTTP flood attacks and ensure only genuine customers (not bots) joining the event, which security product should you choose?
- A. Server Guard
- B. Anti-DDoS pro
- C. Anti-DDoS Basic
- D. WAF
正解：D
解説：
Explanation
Web Application Firewall (WAF) is a cloud-based security service that protects web applications from common web attacks, such as SQL injection, cross-site scripting, and HTTP flood. WAF can also filter out malicious requests and bots, and ensure that only legitimate traffic reaches the web servers. WAF can help online shops to avoid HTTP flood attacks and ensure only genuine customers joining the event.
References:
Alibaba Cloud Web Application Firewall
ACA Cloud Computing Certification Exam Preparation Course
Alibaba Cloud Computing Exam Question 2022
After adding your website to the WAF protection list, you can enable HTTP Flood protection and select an appropriate protection mode for the website
質問 # 41
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ACA-Cloud1サンプルには正確な更新された問題：https://www.passtest.jp/Alibaba-Cloud/ACA-Cloud1-shiken.html
ACA-Cloud1試験情報と無料練習テストを提供します：https://drive.google.com/open?id=1MfaDiKY3ojvwiZtBpyjwsiSBInishcG7