Alibaba Cloud Certified ACA-Cloud1 Dumps Questions Valid ACA-Cloud1 Materials
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Alibaba Cloud ACA-Cloud1 (ACA Cloud Computing Associate) exam is a certification program designed to validate the skills and knowledge of individuals in cloud computing. ACA-Cloud1 exam covers a wide range of topics, including cloud computing basics, cloud infrastructure, cloud security, and Alibaba Cloud services. ACA-Cloud1 exam is intended for individuals who want to demonstrate their proficiency in cloud computing and gain a competitive edge in the industry.
NEW QUESTION # 28
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. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 29
In which of the following cases would you need to apply an ICP license? (Choose three.)
- A. Open your office in China
- B. Launch your online shop in China
- C. Launch your website in China
- D. Accelerate your Overseas Website in China
Answer: A,B,C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/icp
NEW QUESTION # 30
Server Load Balancer can help protect from ___________________ attack.
- A. Virus
- B. Ransomware
- C. DDoS
- D. SQL injection
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/27539.htm
NEW QUESTION # 31
ECS can be used along with to store static images, videos, and reducing storage fees.
- A. RDS
- B. OSS
- C. VPC
- D. Server Load Balancer
Answer: B
Explanation:
Reference:
http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNA0011858383_en- US_intl_190320132947_public_91775d442a4b315acafcb25df8bcc84f.pdf
NEW QUESTION # 32
ECS can be used along with_____to store static images, videos, and reducing storage fees.
- A. RDS
- B. OSS
- C. VPC
- D. Server Load Balancer
Answer: B
NEW QUESTION # 33
Alibaba Cloud relational database service (RDS) is a stable, reliable and elastic online database service. RDS supports below database types _______________? (Choose three.)
- A. PostgreSQL
- B. MySQL
- C. SQL Server
- D. Oracle database
Answer: A,B,C
NEW QUESTION # 34
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. Bucket level
- D. RAM account level
Answer: A,C,D
Explanation:
Explanation
When using Alibaba Cloud OSS, you can set access control in three different levels, which are bucket level, object level, and RAM account level. Bucket level access control is the highest level of access control, which determines whether a user can access the bucket and its objects. Bucket level access control can be set to public read/write, public read, or private. Object level access control is the second level of access control, which determines whether a user can access a specific object in the bucket. Object level access control can be set to inherit from the bucket, public read/write, public read, or private. RAM account level access control is the lowest level of access control, which determines whether a user can perform certain operations on the bucket or the object. RAM account level access control can be set by using RAM policies, which specify the actions, resources, and conditions for the access. References: Object Storage Service (OSS) - Alibaba Cloud Academy, Access Control - Alibaba Cloud Documentation Center
NEW QUESTION # 35
Which of the following statements to OSS bucket is not correct?
- A. There is no limitation to objects number inside one bucket
- B. Every bucket should have a unique name
- C. Every user can create more than one bucket
- D. Bucket name can be changed after creation
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/31885.htm?spm=a2c63.p38356.a3.3.43f03bb9a3KjLl
NEW QUESTION # 36
Auto Scaling can automatically remove unhealthy ECS instances from the scaling group (this feature is called Elastic Self-Health). Yet, after removal, the user has to manually add equivalent amount of new ECS instances back to the scaling group.
- A. TRUE
- B. FALSE
Answer: B
Explanation:
Explanation
B is the correct answer because Auto Scaling can automatically remove unhealthy ECS instances from the scaling group, and also automatically add equivalent amount of new ECS instances back to the scaling group.
This feature is called Elastic Self-Health, and it can improve the availability and reliability of the scaling group. Elastic Self-Health can be enabled or disabled in the scaling group settings. When Elastic Self-Health is enabled, Auto Scaling monitors the health status of the ECS instances in the scaling group based on the health check results of the Server Load Balancer (SLB) instances that are associated with the scaling group. If an ECS instance is detected as unhealthy by SLB for a specified period of time, Auto Scaling removes the unhealthy ECS instance from the scaling group and releases it. Then, Auto Scaling triggers a scale-out event to add a new ECS instance to the scaling group to maintain the desired capacity12 References: 1: Elastic Self-Health 2: Enable or disable Elastic Self-Health
NEW QUESTION # 37
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. Container Service
- B. OSS
- C. CDN
- D. ECS
Answer: B
NEW QUESTION # 38
Alibaba Cloud CDN can directly accelerate the access to the files stored in OSS and reduce OSS traffic costs.
- A. TRUE
- B. FALSE
Answer: A
Explanation:
Explanation
Alibaba Cloud CDN can directly accelerate the access to the files stored in OSS and reduce OSS traffic costs.
Alibaba Cloud CDN is a global network of points of presence (POPs) that are distributed across the globe.
Alibaba Cloud CDN serves to reduce back-to-origin traffic. This in turn prevents network congestion and reduces latency. If you use Alibaba Cloud CDN to accelerate access to OSS, you can benefit from the following advantages1:
Improved user experience: Alibaba Cloud CDN caches the files stored in OSS to the POPs that are nearest to the users. This reduces the distance that the files need to travel and improves the access speed and user experience.
Reduced OSS traffic costs: Alibaba Cloud CDN reduces the number of requests that are sent to OSS.
This reduces the OSS traffic costs and the load on the OSS servers.
Enhanced security: Alibaba Cloud CDN supports HTTPS secure acceleration and anti-leech protection.
This ensures the security and integrity of the files stored in OSS. References: Use Alibaba Cloud CDN to accelerate access to OSS
NEW QUESTION # 39
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. RDS
- B. Auto Scaling
- C. VPC
- D. Server Load Balancer
Answer: B
NEW QUESTION # 40
Which of the followings are not the operations that you can do on a cloud disk snapshot? (Choose two.)
- A. snapshot duplicate
- B. snapshot rollback
- C. snapshot deletion
- D. snapshot download
Answer: A,D
NEW QUESTION # 41
Which of the following statements is wrong when comparing RDS with self-built database?
- A. Self-built database supports quick deployment and elastic scaling.
- B. 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.
- C. 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.
- D. RDS requires no O&M while self-built database requires a dedicated DBA for maintenance, which results in high HR cost.
Answer: A
Explanation:
Explanation
ApsaraDB RDS is a cloud-based relational database service that provides secure, cost-effective, and scalable database solutions for various applications. RDS has many advantages over self-built databases, such as high availability, automatic backup, and easy O&M. One of the statements that is wrong when comparing RDS with self-built database is that self-built database supports quick deployment and elastic scaling. This is not true, because self-built database requires users to purchase, install, and configure hardware and software by themselves, which can be time-consuming and complex. Moreover, self-built database cannot easily adjust the computing and storage resources according to the business needs, which can lead to over-provisioning or under-provisioning. RDS, on the other hand, supports quick deployment and elastic scaling, because users can create, modify, or delete RDS instances in minutes through the console or API. Users can also scale up or down the RDS instance specifications, storage capacity, or network bandwidth without affecting the business continuity.
References:
ApsaraDB RDS
ACA Cloud Computing Certification Exam Preparation Course
Which of the following statements is NOT correct, when comparing RDS ...
NEW QUESTION # 42
Which of the following ECS instance configurations can't be changed if we don't change instance type?
- A. Number of data disk
- B. Mem size
- C. System disk size
- D. Data disk size
Answer: B
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 # 43
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. 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.
- 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. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.
Answer: D
NEW QUESTION # 44
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 Basic
- C. Server Guard
- D. Anti-DDoS pro
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 # 45
RDS provides whitelist access policies. You can set permitted IP addresses and IP network segments to effectively prevent hackers from attacking the server by port scanning.
- A. TRUE
- B. FALSE
Answer: B
Explanation:
Reference:
https://apsarastackdocument.oss-cn-hangzhou.aliyuncs.com/01_ApsaraStackEnterprise/V3.5.2- intl-en/Alibaba%20Cloud%20Apsara%20Stack%20Enterprise%201808%20Security%20Whitepaper%20-% 2020180831.pdf
NEW QUESTION # 46
A/An _________________ is a copy of data on a disk at a certain point in time.
- A. EIP
- B. image
- C. snapshot
- D. template
Answer: C
NEW QUESTION # 47
Alibaba Cloud does not support Intranet communication between products that are not in the same region, which does not mean ______________?
- A. ECS instances in different regions cannot communicate with each other on the intranet.
- B. Server Load Balancer cannot be deployed for ECS instances in various regions.
- 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
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/40654.htm
NEW QUESTION # 48
Which of the following is not the database type supported by RDS?
- A. SQL Server
- B. Postgre SQL
- C. MySQL
- D. Oracle database
Answer: D
Explanation:
Explanation/Reference: https://aws.amazon.com/rds/features/
NEW QUESTION # 49
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. Changes the website access mode to HTTPS.
- B. Migrates music files from the OSS to the data disks for ECS instances.
- C. Introduce SLB for extra protection.
- D. Limits access sources by configuring "Anti-leech settings" of OSS bucket attributes.
Answer: D
NEW QUESTION # 50
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To prepare for the ACA-Cloud1 exam, candidates can take advantage of a variety of resources, including online training courses, practice exams, and study guides. Alibaba Cloud offers a comprehensive training program that covers all the topics included in the exam. The training program includes video lectures, hands-on labs, and quizzes to help candidates prepare for the exam. Additionally, there are many third-party resources available online that provide study materials and practice exams to help candidates prepare.
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