[Aug 22, 2023] Ultimate ACA-Cloud1 Guide to Prepare Free Latest Alibaba Cloud Practice Tests Dumps
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NEW QUESTION # 28
When we talk about the 'Elastic' feature for ECS product, we are not talking about _____________.
- A. Elastic Administration
- B. Elastic Network
- C. Elastic Storage
- D. Elastic Computing
Answer: A
NEW QUESTION # 29
Server Load Balancer supports protocols like . (Choose four.)
- A. MPLS
- B. HTTP
- C. HTTPS
- D. TCP
- E. UDP
- F. MQTT
Answer: B,C,D,E
Explanation:
Comprehensive protocol support - ICMP, TCP, UDP, HTTP, HTTPS,
Reference:
https://www.a10networks.com/resources/articles/server-load-balancing
NEW QUESTION # 30
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. By adding a SLB instance and increase the number of ECS instances to reduce the work load on current ECS instances.
- B. Use content delivery network, CDN, to accelerate the caching of the platform's css, JavaScript files etc.
- 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: A,C
NEW QUESTION # 31
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 have the same configuration
- B. All backend servers under the same SLB instance must be in the same Scaling Group
- C. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
- D. All ECS instances under the same SLB instance must be running on the same operating system
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/blog/comprehensive-upgrade-of-alibaba-cloud-auto-scaling- product_594112
NEW QUESTION # 32
Which of the following is not the database type supported by RDS?
- A. Oracle database
- B. MySQL
- C. Postgre SQL
- D. SQL Server
Answer: A
Explanation:
Reference:
https://aws.amazon.com/rds/features/
NEW QUESTION # 33
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 # 34
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 # 35
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. Support Ticket Service
- B. None Of The Above
- C. Load and Performance Testing Service
- D. After-Sales Support Service
Answer: D
NEW QUESTION # 36
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. Oracle database
- D. SQL Server
Answer: A,B,D
NEW QUESTION # 37
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. Oracle database
- D. SQL Server
Answer: A,B,D
NEW QUESTION # 38
You can create a custom image for ECS using which of the followings? (Choose two.)
- A. Data disk snapshot
- B. Memory snapshot
- C. System disk snapshot
- D. CPU snapshot
Answer: A,C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/25460.htm
NEW QUESTION # 39
ECS is a highly flexible service. It can be used independently as a simple web server, or used with other Alibaba Cloud products, such as OSS and CDN, to provide advanced solutions. ECS can be used in applications such as: ______________. (Choose four.)
- A. simple web applications
- B. large-traffic apps
- C. Official corporate websites
- D. no limited online storage
- E. Databases
Answer: A,B,C,E
Explanation:
Explanation/Reference:
NEW QUESTION # 40
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. By adding a SLB instance and increase the number of ECS instances to reduce the work load on current ECS instances.
- B. Use content delivery network, CDN, to accelerate the caching of the platform's css, JavaScript files etc.
- 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: A,C
NEW QUESTION # 41
As a cloud computing service provider, Alibaba Cloud provides security services including________. (Choose two.)
- 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: A,C
Explanation:
Reference:
https://www.alibabacloud.com/solutions/security
NEW QUESTION # 42
What is the full name of ECS?
- A. Elastic Cost Server
- B. Elastic Communication Server
- C. Elastic Compute Service
- D. Elastic Computing Server
Answer: C
NEW QUESTION # 43
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 # 44
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. Web application
- B. Database
- C. Confidential files on the server
- D. Pictures on server
Answer: B
Explanation:
Explanation/Reference: https://www.rapid7.com/fundamentals/sql-injection-attacks/
NEW QUESTION # 45
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 Pro
- C. Managed Security Service
- D. Anti-DDoS Service Basic
Answer: D
NEW QUESTION # 46
Which of the following statements is true for RDS?
- A. Multiple databases can be created in one RDS instance.
- B. Databases with the same name are allowed in the same instance.
- C. Resources are not shared among the databases in the same RDS instance.
- D. None of the above is true.
Answer: A
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/26092.htm
NEW QUESTION # 47
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. Situation Awareness
- B. Server Guard
- C. Anti-DDoS Basic Service
- D. CloudMonitor
Answer: B
NEW QUESTION # 48
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. VPC
- C. Server Load Balancer
- D. Auto Scaling
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/blog/designing-a-cloud-based-architecture-for-internet-of-vehicles- iov-series-ii_594263
NEW QUESTION # 49
Server Load Balancer supports protocols like. (Choose four.)
- A. MPLS
- B. HTTP
- C. HTTPS
- D. TCP
- E. UDP
- F. MQTT
Answer: B,C,D,E
Explanation:
Explanation
Comprehensive protocol support - ICMP, TCP, UDP, HTTP, HTTPS,
NEW QUESTION # 50
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