[Dec 01, 2021] Powerful ACA-Cloud1 PDF Dumps for ACA-Cloud1 Questions
Authentic ACA-Cloud1 Dumps - Free PDF Questions to Pass
Alibaba Cloud ACA-Cloud1 Exam Syllabus Topics:
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NEW QUESTION 31
Alibaba Cloud's object storage (Object Storage Service, OSS for short) can be used to store massive amount of files, but there is still a maximum number of files in a single bucket.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 32
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
Answer: C
NEW QUESTION 33
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 _________________. (Choose two.)
- 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. Import data into OSS to share the storage load of the platform.
- D. 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.
Answer: B,D
NEW QUESTION 34
A/An is a copy of data on a disk at a certain point in time.
- A. image
- B. template
- C. snapshot
- D. EIP
Answer: C
NEW QUESTION 35
Alibaba Cloud does not support Intranet communication between products that are not in the same region, which does not mean?
- A. Server Load Balancer cannot be deployed for ECS instances in various regions.
- B. ECS instances in different regions cannot communicate with each other on the intranet.
- C. ECS instances and other products in different regions, such as ApsaraDB for RDS and OSS instances, cannot communicate with each other on the intranet.
- D. Server Load Balancer can be deployed for ECS instances in various regions.
Answer: C
NEW QUESTION 36
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
Answer: C
NEW QUESTION 37
__________feature in Server Load Balancer means that it can forward the access requests from a single user to the same ECS instance within a certain period to ensure session continuity.
- A. session persistence
- B. least connections scheduling
- C. health check
- D. Weighted Round Robin
Answer: A
NEW QUESTION 38
Your friend purchases some Alibaba Cloud resources and uses them to build an online training website. Before the site goes online, your friend wants to perform some performance tests but doesn't know how to do it. In this case, which of the following services can help?
- A. Load and Performance Testing Service
- B. Support Ticket Service
- C. None Of The Above
- D. After-Sales Support Service
Answer: D
NEW QUESTION 39
Using a cloud computing service is simple and straightforward. One can choose the instance with desired specification, finish payment and then use it right away. Moreover, the underlying physical machines are managed by cloud service providers and transparent to users.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 40
Server Load Balancer can help protect from attack.
- A. SQL injection
- B. DDoS
- C. Virus
- D. Ransomware
Answer: B
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/27539.htm
NEW QUESTION 41
ECS can be used along with to store static images, videos, and reducing storage fees.
- A. VPC
- B. RDS
- C. OSS
- D. Server Load Balancer
Answer: C
Explanation:
Reference:
http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNA0011858383_en- US_intl_190320132947_public_91775d442a4b315acafcb25df8bcc84f.pdf
NEW QUESTION 42
In which of the following cases would you need to apply an ICP license? (Choose three.)
- A. Launch your website in China
- B. Open your office in China
- C. Accelerate your Overseas Website in China
- D. Launch your online shop in China
Answer: A,B,D
Explanation:
Reference:
https://www.alibabacloud.com/icp
NEW QUESTION 43
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. WAF
- B. Anti-DDoS pro
- C. Anti-DDoS Basic
- D. Server Guard
Answer: A
Explanation:
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
NEW QUESTION 44
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 has to be backed up by customer manually, which is time-consuming and labor-intensive.
- C. Data Reliability is not less than 99.99999999%. Data is backed up automatically with multiple redundant copies.
- D. The following features are available: Multiple Authentication and Authorization mechanism, Whitelist, Anti- leech URL, and Master-Sub Account
Answer: C
Explanation:
Reference:
https://www.alibabacloud.com/blog/alibaba-cloud-object-storage-vs--ibm-cloud-and-oracle-cloud- equivalent_293464
NEW QUESTION 45
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. (Choose two.)
- 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. Import data into OSS to share the storage load of the platform.
- D. 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.
Answer: B,D
NEW QUESTION 46
When using Alibaba Cloud OSS, you can set access control in 3 different levels, which are (Choose three.)
- A. Object level
- B. Directory level
- C. RAM account level
- D. Bucket level
Answer: A,B,D
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/100676.htm
NEW QUESTION 47
Which of the following ECS instance configurations can't be changed if we don't change instance type?
- A. System disk size
- B. Number of data disk
- C. Mem size
- D. Data disk size
Answer: A
NEW QUESTION 48
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. Pictures on server
- B. Database
- C. Confidential files on the server
- D. Web application
Answer: B
Explanation:
Explanation/Reference: https://www.rapid7.com/fundamentals/sql-injection-attacks/
NEW QUESTION 49
In which of the following cases would you need to apply an ICP license? (Choose three.)
- A. Launch your website in China
- B. Open your office in China
- C. Accelerate your Overseas Website in China
- D. Launch your online shop in China
Answer: A,B,D
NEW QUESTION 50
When we talk about the 'Elastic' feature for ECS product, we are not talking about.
- A. Elastic Storage
- B. Elastic Computing
- C. Elastic Network
- D. Elastic Administration
Answer: D
NEW QUESTION 51
A customer uses Alibaba Cloud Auto Scaling service and creates a scaling group. He/she sets the "Minimum number of instances" to 6 and "Maximum number of instances" to 8.
After correctly configuring scaling settings, the customer adds a scaling rule "Remove 5 ECS instances", and creates a scheduled task based on this rule.
And then, the customer checks the scaling group and see it already contains 8 valid ECS instances, he/she then enables this scaling group immediately.
How many ECS instances are left in the scaling group when the scheduled task is activated once?
- A. Five
- B. Zero
- C. One
- D. Six
Answer: B
NEW QUESTION 52
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