合格させるAlibaba Cloud ACA-Cloud1にはPassTest提供の試験問題集で2023年06月更新
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ACA-Cloud1認定試験は、クラウドコンピューティングに関するスキルと知識を強化し、この分野でのキャリアを追求することを望む個人を対象としています。また、既にクラウドコンピューティングで働いているプロフェッショナルが、潜在的な雇用主に自分の専門知識を証明するための貴重な認定資格です。
質問 # 17
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. Situation Awareness
- B. CloudMonitor
- C. Anti-DDoS Basic Service
- D. Server Guard
正解：D
解説：
Reference:
https://www.alibabacloud.com/blog/blogblogalibaba-cloud-server-guard-a-comprehensive- assessment_284390
質問 # 18
Your website has high volume of traffic and sudden spikes for a very short time. In this scenario, can manage traffic peak efficiently and maintain a consistent user experience.
- A. Auto Scaling
- B. Server Load Balancer
- C. VPC
- D. RDS
正解：A
解説：
Reference:
https://www.alibabacloud.com/blog/designing-a-cloud-based-architecture-for-internet-of-vehicles- iov-series-ii_594263
質問 # 19
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 add or reduce ECS instances.
- 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. Create 30 ECS instances based on the custom image and add them to SL 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.
正解：A
質問 # 20
ECS is a highly flexible service. It can be used independently as a simple web server, or used with other Alibaba Cloud products, such as OSS and CDN, to provide advanced solutions. ECS can be used in applications such as: ______________. (Choose four.)
- A. Official corporate websites
- B. no limited online storage
- C. simple web applications
- D. large-traffic apps
- E. Databases
正解：A、C、D、E
解説：
Explanation/Reference:
質問 # 21
Your website has oscillating traffic peaks that are difficult to predict in advance. In this scenario, it is recommended to use SLB and together with ECS.
- A. Auto Scaling
- B. VPC
- C. RDS
- D. MaxCompute
正解：A
質問 # 22
Which of the following ECS instance configurations can't be changed if we don't change instance type?
- A. Mem size
- B. System disk size
- C. Number of data disk
- D. Data disk size
正解：B
質問 # 23
Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost effective storage service. OSS is superior than self-built storage in all these aspects. Which of the following advantage relates to the high availability of OSS?
- A. Data has to be backed up by customer manually, which is time-consuming and labor-intensive.
- B. Data Reliability is not less than 99.99999999%. Data is backed up automatically with multiple redundant copies.
- C. Availability actually relies on the underlying hardware, which can break down easily. Once the hard disk malfunctions, it can also lead to permanent data loss.
- D. The following features are available: Multiple Authentication and Authorization mechanism, Whitelist, Anti- leech URL, and Master-Sub Account
正解：B
解説：
Explanation/Reference: https://www.alibabacloud.com/blog/alibaba-cloud-object-storage-vs--ibm-cloud-and-oracle-cloud- equivalent_293464
質問 # 24
A large shopping mall deploys a new video surveillance system. The five-floor building in which the mall is located installed 35 HD cameras to monitor the major exits. The surveillance system is deployed on an ECS instance, which has four 2 TB data disks to store video data.
However, video data grows rapidly and the engineers find that the ECS will run out of storage space within 2 weeks.
In this case, product is thought to be the best solution for addressing the storage challenge while ensuring quick access to historical video data when needed.
- A. ECS
- B. CDN
- C. OSS
- D. Container Service
正解：C
質問 # 25
Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost effective storage service. OSS is superior than self-built storage in all these aspects. Which of the following advantage relates to the high availability of OSS?
- A. Data has to be backed up by customer manually, which is time-consuming and labor-intensive.
- B. Data Reliability is not less than 99.99999999%. Data is backed up automatically with multiple redundant copies.
- C. Availability actually relies on the underlying hardware, which can break down easily. Once the hard disk malfunctions, it can also lead to permanent data loss.
- D. The following features are available: Multiple Authentication and Authorization mechanism, Whitelist, Anti- leech URL, and Master-Sub Account
正解：B
解説：
Reference:
https://www.alibabacloud.com/blog/alibaba-cloud-object-storage-vs--ibm-cloud-and-oracle-cloud- equivalent_293464
質問 # 26
A company uses Alibaba Cloud SLB and Auto Scaling at the same time, hoping this combination can help save O&M cost and provide a stable and reliable system.
However, because they do not have relevant experience, the company's engineers listed some precautions based on their understanding, and turned the list to you for advice.
As an expert of Alibaba Cloud, you tell them only________is correct.
- A. All backend servers under the same SLB instance must be in the same Scaling Group
- B. All ECS instances under the same SLB instance must be running on the same operating system
- C. All backend servers under the same SLB instance must have the same configuration
- D. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
正解：D
質問 # 27
Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low cost, and high reliability. To control the access to the files stored on OSS, OSS provides multiple access permissions for each bucket. These bucket permissions are ____________. (Choose three.)
- A. Public-read
- B. Private-read
- C. Public-read-write
- D. Private
正解：A、C、D
解説：
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/100676.htm
質問 # 28
You are developing a highly available web application using stateless web servers. Which services are suitable for the application? (Choose three.)
- A. SLB
- B. OSS
- C. ECS
- D. MaxCompute
- E. RDS
正解：B、C、E
質問 # 29
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. Situation Awareness
- B. CloudMonitor
- C. Anti-DDoS Basic Service
- D. Server Guard
正解：D
質問 # 30
When we talk about the 'Elastic' feature for ECS product, we are not talking about.
- A. Elastic Network
- B. Elastic Storage
- C. Elastic Administration
- D. Elastic Computing
正解：C
質問 # 31
Your website has oscillating traffic peaks that are difficult to predict in advance. In this scenario, it is recommended to use SLB and __________________ together with ECS.
- A. Auto Scaling
- B. VPC
- C. RDS
- D. MaxCompute
正解：A
質問 # 32
You can retrieve data directly from an ECS Image and use it right away.
- A. TRUE
- B. FALSE
正解：B
質問 # 33
A company uses Alibaba Cloud SLB and Auto Scaling at the same time, hoping this combination can help save O&M cost and provide a stable and reliable system.
However, because they do not have relevant experience, the company's engineers listed some precautions based on their understanding, and turned the list to you for advice.
As an expert of Alibaba Cloud, you tell them only _______________ is correct.
- A. All backend servers under the same SLB instance must be in the same Scaling Group
- B. All ECS instances under the same SLB instance must be running on the same operating system
- C. All backend servers under the same SLB instance must have the same configuration
- D. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
正解：D
解説：
Explanation/Reference: https://www.alibabacloud.com/blog/comprehensive-upgrade-of-alibaba-cloud-auto-scaling- product_594112
質問 # 34
Which of the following statements about file uploading to OSS strategy is not correct?
- A. If you need to upload very large file you better use multi-part uploading to get the capability of resuming from break point.
- B. If you are using OSS to store some log files which are continuously being updated, you better choose streaming method to be able to append to one existing object instead of overwriting.
- C. All file uploading method provided by Alibaba Cloud OSS service will support resuming from break point.
- D. If you are uploading some small files (<1m), you can choose using put method to be able finish uploading in one http request.
正解：B
質問 # 35
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. Anti-DDoS pro
- B. Server Guard
- C. Anti-DDoS Basic
- D. WAF
正解：D
解説：
After adding your website to the WAF protection list, you can enable HTTP Flood protection and select an appropriate protection mode for the website Reference:
https://www.alibabacloud.com/help/doc-detail/43443.htm
質問 # 36
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