Alibaba ACA Cloud Computing Exam Dumps 2023
Alibaba ACA Cloud Computing Exam Dumps 2023
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Question 1:
A company is on the need for long-term archive data storage. Which OSS storage type would you recommend to the company?
A. Standard
B. Advanced
C. Infrequent Access
D. Archive
Answer: D
Explanation:
“OSS Archive storage has the lowest price among the three storage classes. It is suitable for long-term (at least half a year) storage of data that is infrequently accessed. The data may take about one minute to restore before it can be read. This storage option is suitable for data such as archival data, medical images, scientific materials, and video footage. ”
https://www.alibabacloud.com/help/doc-detail/51374.htm
Question 2:
A tech company wants to build an application in an ECS instance and evaluate whether the product is viable in the market. They don´t want to have any upfront payment or any long-term commitments. Which ECS billing method should they choose?
A. Basic
B. Enterprise
C. Pay As You Go (PAYG)
D. Subscription
Answer: C
Explanation:
“Pay-as-you-go allows you to pay for the amount of resources you actually use. You can purchase and release resources on-demand, and scale up as your business grows. Pay-as-you-go helps reduce your costs by 30% to 80% compared with the investment of a traditional host. “
https://www.alibabacloud.com/help/doc-detail/40653.htm
Question 3:
You are developing a highly available web application using stateless web servers. Which services are suitable for storing session state data? (Number of correct answers: 2)
A. RDS
B. Table Store
C. MaxCompute
D. OSS
Answer: A, B
Explanation:
As RDS online stable, reliable database service so it is more suitable to store online data. Table Storage can store a large amount of structured data and support fast query and analysis. Whereas OSS is more suitable to store the objects and MaxCompute is a computing platform for large scale data warehousing.
Documentation: https://www.alibabacloud.com/help/doc-detail/26092.htm
https://www.alibabacloud.com/help/doc-detail/27280.htm
Question 4:
Company A builds a sales management platform based on Alibaba Cloud services, using 3 ECS instances. One of the ECS instance has MySQL installed as the database server of the platform, the other two are used as WEB servers. After some time, due to the rapid increase of employees and sales analysis requests, the performance of the platform is challenged in terms of response time. Through CloudMonitor, it is found that the average CPU usage reaches 70% for the two WEB server ECS instances and the database load reaches 75% for the database server ECS instance. In this situation, company A may choose which Alibaba Cloud services to improve the performance: (Number of correct answers: 2)
A. Use content delivery network, CDN, to accelerate the caching of the platform‘s CSS, JavaScript files etc
B. By adding a SLB instance and increase the number of ECS instances to reduce the work load on current ECS instances
C. Use RDS to replace existing self built database in order to obtain better database performance; also creating RDS read-only instances to handle read-only requests, hence reduce the work load on master RDS instance
D. Import data into OSS to share the storage load of the platform
Answer: B, C
Explanation:
In the above scenario, CPU usage reaches 70% so we need to add a number of ECS instances to reduce the workload and configure SLB to distribute traffic across web server instances. We can use RDS which is a fully managed service by Alibaba Cloud to improve the performance.
Documentation: https://www.alibabacloud.com/help/doc-detail/196874.htm
https://www.alibabacloud.com/help/doc-detail/26092.htm
Question 5:
As a cloud computing service provider, Alibaba Cloud provides security services including: (Number of correct answers: 2)
A. Security operation for underlying hardware of cloud computing
B. Application maintenance in ECS instances
C. Security isolation between cloud computing tenants
D. IP white list setting for RDS
Answer: C, D
Explanation:
IP whitelists in RDS provide high-level access control and security protection for your RDS instance. On Alibaba Cloud, ECS instances that are assigned to different users are isolated, providing the needed security barriers among tenants.
Documentation: https://www.alibabacloud.com/help/doc-detail/43185.htm
https://www.alibabacloud.com/blog/top-5-security-considerations-for-cloud-deployments_593694
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SkillCertPro offers detailed explanations to each question which helps to understand the concepts better.
It is recommended to score above 85% in SkillCertPro exams before attempting a real exam.
SkillCertPro updates exam questions every 2 weeks.
You will get life time access and life time free updates
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Question 6:
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 but imposes certain requirements on the instance region. In this case, which of the following statements is true?
A. The instance and the scaling group must be in the same region but not necessarily the same zone
B. The instance and the scaling group must be in the same region and zone
C. The instance and the scaling group can be in different regions and zones
D. 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
Answer: A
Explanation:
In Auto Scaling your instances and scaling group must be in the same region not necessary in the same zones OR Both the instance and the scaling group are in the same Virtual Private Cloud (VPC) network if their network type is VPC.
Documentation: https://www.alibabacloud.com/help/doc-detail/25882.htm
Question 7:
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. 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
B. Data Reliability is not less than 99.99999999%. Data is backed up automatically with multiple redundant copies
C. Data has to be backed up by customers manually, which is time-consuming and labor-intensive
D. The following features are available: Multiple Authentication and Authorization mechanism, Whitelist, Anti-leech URL, and Master-Sub Account
Answer: B
Explanation:
OSS stores the copies of your data in different servers in the same region with 99.9999999% of data durability. It also supports CRR (Cross-region-replication).
Documentation: https://www.alibabacloud.com/help/doc-detail/52830.htm
Explanation: OSS stores the copies of your data in different servers in the same region with 99.9999999% of data durability. It also supports CRR (Cross-region-replication).
Documentation: https://www.alibabacloud.com/help/doc-detail/52830.htm
Question 8:
Which of the following statements about file uploading to OSS strategy is not correct?
A. All file uploading method provided by Alibaba Cloud OSS service will support resuming from break point
B. If you are uploading some small files (<1m), you can choose using put method to be able finish uploading in one http request
C. 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
D. If you need to upload very large file you better use multi-part uploading to get the capability of resuming from break point
Answer: C
Explanation:
Log Service allows you to collect logs by using clients, web pages, protocols, SDKs, and APIs. These collection methods are implemented based on RESTful APIs. We cannot choose streaming methods in order to store log files.
Documentation: https://www.alibabacloud.com/help/doc-detail/28981.htm
Question 9:
Which Alibaba Cloud service offers an alarm service where you can set alarm rules and alarm notification methods? By using this service, you can identify and fix the service exceptions without any delay, increasing the availability of your products.
A. OSS
B. RDS
C. Auto Scaling
D. CloudMonitor
Answer: D
Explanation:
“CloudMonitor collects data on Alibaba Cloud resource metrics and custom metrics. CloudMonitor can be used to detect the availability of your service and allows you to configure alerts on specific metrics. CloudMonitor provides a real-time overview of cloud services, resource usage, and alerts. With this information, you can promptly react to exceptions and ensure the availability of your applications.”
https://www.alibabacloud.com/help/doc-detail/35170.htm
Question 10:
An Alibaba Cloud customer is using RDS. During the peak hours, RDS is getting a large volume of reading requests, which is overwhelming the primary instance, causing business interruptions. Which is the best approach to solve this issue?
A. Create an automatic backup
B. Change the RDS instance edition
C. Attach Write-only instances to RDS
D. Attach Read-only instances to RDS
Answer: D
Explanation:
“If a large volume of read requests overwhelm the primary instance, your business may be interrupted. To increase the read capability of your database system and offload read requests from the primary instance, you can create one or more read-only instances.”
https://www.alibabacloud.com/help/doc-detail/26136.htm
For a full set of 250+ questions. Go to
https://skillcertpro.com/product/alibaba-aca-cloud-computing-exam-questions/
SkillCertPro offers detailed explanations to each question which helps to understand the concepts better.
It is recommended to score above 85% in SkillCertPro exams before attempting a real exam.
SkillCertPro updates exam questions every 2 weeks.
You will get life time access and life time free updates
SkillCertPro assures 100% pass guarantee in first attempt.