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Alibaba Cloud ACA-Cloud1 Exam Syllabus Topics:
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NEW QUESTION 25
Multiple lower-configuration I/O-optimized ECS instances can be used with ___________ to deliver a high- availability architecture.
- A. OSS
- B. Auto Scaling
- C. Server Load Balancer
- D. RDS
Answer: C
NEW QUESTION 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 ECS instances under the same SLB instance must be running on the same operating system
- B. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
- C. All backend servers under the same SLB instance must be in the same Scaling Group
- 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 27
Which method is not supported by OSS to create a bucket?
- A. through ECS instance filesystem directory operation
- B. through cloud console
- C. through oss cmd tool
- D. through OSS API/SDK
Answer: C
NEW QUESTION 28
Which of the following statements is true for RDS?
- A. Databases with the same name are allowed in the same instance.
- B. None of the above is true.
- C. Resources are not shared among the databases in the same RDS instance.
- D. Multiple databases can be created in one RDS instance.
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/26092.htm
NEW QUESTION 29
Cloud disks are reliable because they use __________ to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
- A. a double copy distributed system
- B. a distributed file management system with 3 redundant copies
- C. a Linux file system
- D. a file system
Answer: B
Explanation:
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.
Reference: http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/pdf/ecs-product-introduction-intl-en-2017-03-
24.pdf
NEW QUESTION 30
RDS for MySQL is a PaaS, which means after creating the RDS instance, the user does not need to take care of the underlying OS, runtime environment of software packages. These would be taken care of by Alibaba Cloud.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 31
A company wants to migrate its system to public cloud platform and they choose Alibaba Cloud. The migration process is very important and they want to ensure that everything works right. Which of the following services can the company choose?
- A. Alibaba Cloud Architecture Design Training
- B. Alibaba Cloud Product Operation Training
- C. Aftersales Support
- D. Event Management Service
Answer: A
NEW QUESTION 32
Alibaba Cloud China Connect is a service that can help international companies do business in China. Which of the following services is not included in China Connect?
- A. Office registration support
- B. Connect your service with Alibaba Group ecosystem
- C. Web hosting
- D. ICP Support
Answer: B
NEW QUESTION 33
You can create a custom image for ECS using which of the followings? (Choose two.)
- A. CPU snapshot
- B. Memory snapshot
- C. Data disk snapshot
- D. System disk snapshot
Answer: C,D
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/25460.htm
NEW QUESTION 34
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
Explanation:
Reference:
https://www.alibabacloud.com/support/after-sales
NEW QUESTION 35
Alibaba Cloud provides anti-DDoS products of different levels. If the service availability needs to be kept at 99.9% or higher under DDoS attacks, which of the following is the MOST suitable product?
- A. Situation Awareness
- B. Anti-DDoS Service Basic
- C. Managed Security Service
- D. Anti-DDoS Service Pro
Answer: B
NEW QUESTION 36
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 37
A/Anis 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 38
Alibaba Cloud provides anti-DDoS products of different levels. If the service availability needs to be kept at 99.9% or higher under DDoS attacks, which of the following is the MOST suitable product?
- A. Situation Awareness
- B. Anti-DDoS Service Basic
- C. Managed Security Service
- D. Anti-DDoS Service Pro
Answer: B
Explanation:
Reference:
https://www.alibabacloud.com/product/anti-ddos
NEW QUESTION 39
__________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 40
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
NEW QUESTION 41
Which of the following statements to OSS bucket is not correct?
- A. Every user can create more than one bucket
- B. There is no limitation to objects number inside one bucket
- C. Every bucket should have a unique name
- D. Bucket name can be changed after creation
Answer: D
NEW QUESTION 42
Alibaba Cloud provides powerful security services (the same level of security services used to support Alibaba Group double 11 shopping festival). However, you have to pay first before using any of the security services.
- A. True
- B. False
Answer: B
NEW QUESTION 43
Cloud disks are reliable because they use to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
- A. a double copy distributed system
- B. a distributed file management system with 3 redundant copies
- C. a Linux file system
- D. a file system
Answer: B
Explanation:
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.
Reference:
http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/pdf/ecs-product-introduction-intl-en-2017-03- 24.pdf
NEW QUESTION 44
Server Load Balancer can manage sudden spikes in traffic, minimize response time and maintain 99.99% availability of your web application.
- A. FALSE
- B. TRUE
Answer: B
Explanation:
Manage sudden spikes in traffic, minimize response time and maintain 99.99% availability of your web application with Server Load Balancer.
Reference: https://arcelon.co.id/product/server_load_balancer.php
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. FALSE
- B. TRUE
Answer: A
Explanation:
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
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