Free Alibaba Cloud ACA-Cloud1 Study Guides Exam Questions and Answer
ACA-Cloud1 Exam Dumps, ACA-Cloud1 Practice Test Questions
NEW QUESTION # 28
When using Alibaba Cloud OSS, you can set access control in 3 different levels, which are (Choose three.)
- A. RAM account level
- B. Directory level
- C. Bucket level
- D. Object level
Answer: B,C,D
NEW QUESTION # 29
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 Scale-In
- C. Elastic Self-Health
- D. Elastic Self-Diagnostic
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/product/auto-scaling
NEW QUESTION # 30
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. Server Load Balancer
- B. RDS
- C. VPC
- D. Auto Scaling
Answer: D
NEW QUESTION # 31
A/An _________________ is a copy of data on a disk at a certain point in time.
- A. snapshot
- B. template
- C. EIP
- D. image
Answer: A
NEW QUESTION # 32
Cloud disks are reliable because they use_________ to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
- A. a distributed file management system with 3 redundant copies
- B. a Linux file system
- C. a file system
- D. a double copy distributed system
Answer: A
Explanation:
Explanation
Cloud disks are reliable because they use a distributed file management system with 3 redundant copies to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability. This means that the data stored on cloud disks is automatically replicated across three different physical servers in the same zone.
If one server fails, the data can still be accessed from the other two servers. Cloud disks also support snapshot backup and recovery, which can help users restore data to a previous point in time in case of accidental deletion or corruption. References: Elastic Compute Service (ECS) - Alibaba Cloud Academy, Cloud Disk - Alibaba Cloud Documentation Center An ECS disk can be used jointly or separately to meet the requirements of different application scenarios. ECS disks are categorized into ephemeral SSD disks and cloud disks. Compared with ephemeral SSD disks, cloud disks are more reliable as they use a triplicate distributed system to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
NEW QUESTION # 33
You can retrieve data directly from an ECS Image and use it right away.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 34
Company B 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. Changes the website access mode to HTTPS.
- B. Introduce SLB for extra protection.
- 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.
Answer: D
Explanation:
Explanation/Reference: http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNOSS11828897_en- US_intl_190202150837_public_b55986256a50380c526a35e863023ec9.pdf (55)
NEW QUESTION # 35
Which of the following ECS instance configurations can't be changed if we don't change instance type?
- A. Number of data disk
- B. Data disk size
- C. Mem size
- D. System disk size
Answer: C
Explanation:
Explanation
= A is the correct answer because the memory size of an ECS instance is determined by the instance type, and it cannot be changed independently. If you want to change the memory size of an ECS instance, you must change the instance type to another one that has a different memory size12 B, C, and D are incorrect answers because the system disk size, data disk size, and number of data disks of an ECS instance can be changed without changing the instance type. You can use the ECS console or API to resize the system disk or data disks of an ECS instance, or add or remove data disks from an ECS instance3456 References: 1: Overview of instance families 2: Change the instance type 3: Resize disks 4: Resize a disk 5: Attach or detach data disks 6: Attach or detach a data disk
NEW QUESTION # 36
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
Answer: A
Explanation:
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
NEW QUESTION # 37
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. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
- C. All ECS instances under the same SLB instance must be running on the same operating system
- D. All backend servers under the same SLB instance must have the same configuration
Answer: B
Explanation:
Reference:
https://www.alibabacloud.com/blog/comprehensive-upgrade-of-alibaba-cloud-auto-scaling- product_594112
NEW QUESTION # 38
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. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 39
A/Anis a copy of data on a disk at a certain point in time.
- A. snapshot
- B. template
- C. EIP
- D. image
Answer: A
NEW QUESTION # 40
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. Which of the following application scenarios are suitable for Auto Scaling? (Choose three.)
- A. When an ECS instance reacts abnormally in a scaling group, Auto Scaling will create a new ECS instance to take over the computing tasks conducted by the faulty instance.
- B. You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be added seamlessly to address traffic peaks and surges.
- C. You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be reduced automatically to save costs when business needs drop.
- D. You want to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be automatically upgraded (with more Memory, more powerful CPU) when needed.
Answer: A,B,C
NEW QUESTION # 41
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. PostgreSQL
- C. Oracle database
- D. MySQL
Answer: A,B,D
NEW QUESTION # 42
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. CloudMonitor
- B. Anti-DDoS Basic Service
- C. Situation Awareness
- D. Server Guard
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/blog/blogblogalibaba-cloud-server-guard-a-comprehensive- assessment_284390
NEW QUESTION # 43
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 Scale-In
- C. Elastic Self-Health
- D. Elastic Self-Diagnostic
Answer: D
NEW QUESTION # 44
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. FALSE
- B. TRUE
Answer: A
Explanation:
Explanation
NEW QUESTION # 45
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. The following features are available: Multiple Authentication and Authorization mechanism, Whitelist, Anti- leech URL, and Master-Sub Account
- 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. 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.
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/blog/alibaba-cloud-object-storage-vs--ibm-cloud-and-oracle-cloud- equivalent_293464
NEW QUESTION # 46
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The ACA-Cloud1 certification is recognized globally and is a valuable credential for individuals who are interested in pursuing a career in cloud computing. It not only validates the skills and knowledge of an individual but also demonstrates their commitment to keeping up with the latest developments in the field. ACA Cloud Computing Associate certification is also a testament to an individual’s dedication to their career and their willingness to invest time and effort in developing their skills.
Latest ACA-Cloud1 Actual Free Exam Questions Updated 74 Questions: https://actualtests.vceengine.com/ACA-Cloud1-vce-test-engine.html
