Alibaba Cloud Computing Exam Question 2022 ( ACA )

1. 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.

2. Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost effective storage service. One of the special characteristics of OSS is its superior data reliability, because of its underlying backup technology and policies. Which of the following statement about OSS backup is correct?

3. You are developing a highly available web application using stateless web servers. Which services are suitable for storing session state data? (Choose two.)

4. 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?

5. What is the full name of ECS?

6. Alibaba Cloud Monitor service stems from years of experience of server monitoring technology in Alibaba group, leveraging the powerful data analysis capability of Alibaba cloud computing platform to provide monitoring service for various clients’ applications and servers. A user receives an alert saying that the IOPS utilization rate for an ECS instance exceeds 80%. Yet, he/she is not sure how to handle the situation, the user may obtain help from Alibaba Cloud through the below methods ____________________? (Choose three.)

7. Which of the following is not the database type supported by RDS?

8. Your website has oscillating traffic peaks that are difficult to predict in advance. In this scenario, it is recommended to use SLB and __________________ together with ECS.

9. You can create a custom image for ECS using which of the followings? (Choose two.)

10. 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 “Adjust to 10 ECS instances”, and creates a scheduled task based on this rule. And then, the customer checks the scaling group and see it already contains 6 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?

11. Which of the following scenarios is applicable to use RDS read-only instances?

12. 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?

13. 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?

14. Alibaba Cloud does not support Intranet communication between products that are not in the same region, which does not mean ______________?

15. Some applications may encounter large traffic fluctuations within a short period. When ECS is used with _______, the number of ECS instances is automatically adjusted based on traffic.

16. Which 2 OSS object types can be configured as parameter for object lifecycle management? (Choose two.)

17. In mainland China, the approval requirements for business record filing vary depending on provincial communication management bureaus.

18. Which of the following statements about file uploading to OSS strategy is not correct?

19. 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?

20. Which of the following statements to OSS bucket is not correct?

21. Server Load Balancer can help protect from ___________________ attack.

22. 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?

23. 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.

24. When using Alibaba Cloud SLB, you can set different weights for backend ECS instances. The higher the weight of a backend ECS instance, the more load will be assigned to it. If an SLB instance has 5 ECS instances in the backend server pool, all of which are healthy. Among these 5 ECS instances, the weight of ecs_inst1 is set to 100. Which of the following statements is correct?

25. Which method is not supported by OSS to create a bucket?

26. 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.

27. Which of the following ECS instance configurations can’t be changed if we don’t change instance type?

28. www.company.com is a newly launched social portal for exchanging automotive information. The portal is based on PHP, including 10GB of images, and some JavaScripts files. Currently one single ECS instance is used to host all the application content as well as a MySQL database. With the growing number of users, the portal is getting slower to load images or respond to user requests. Moreover, there will be additional 50GB image content uploaded to the portal every week. Which combination of Alibaba Cloud services below can help resolve the storage and performance issue at the same time?

29. 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.

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 Cloud Monitor, 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.)

31. Alibaba Cloud CDN can directly accelerate the access to the files stored in OSS and reduce OSS traffic costs.

32. A/An _________________ is a copy of data on a disk at a certain point in time.

33. Which three of the following statements about domain name binding to your OSS bucket are correct? (Choose three.)

34. 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.

35. You can __________________ an ECS instance’s configuration. (Choose two.)

36. ___________________ is a ready-to-use service that seamlessly integrates with Elastic Compute
Service (ECS) to manage varying traffic levels without manual intervention.

37. ECS can be used along with ______ to store static images, videos, and reducing storage fees.

38. Cloud disks are reliable because they use __________ to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.

39. If you are running an online ticket booking service with relatively fixed traffic, then which kind of charging mode is more suitable for you?

40. 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.

41. Server Load Balancer can manage sudden spikes in traffic, minimize response time and maintain 99.99% availability of your web application.

42. Multiple lower-configuration I/O-optimized ECS instances can be used with ___________ to deliver a high-availability architecture.

43. ___________ 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.

44. You can retrieve data directly from an ECS Image and use it right away.

45. Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. It supports adding an existing ECS instance into the scaling group but imposes certain requirements on instance region. In this case, which of the following statements is true?

46. 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?

47. A company wants to use Alibaba Cloud service to replace their self-built database, which of the following services should it choose?

48. Server Load Balancer supports protocols like ______________. (Choose four.)

49. When we talk about the ‘Elastic’ feature for ECS product, we are not talking about _____________.

50. Anti-DDoS is one of the major features in Alibaba cloud security Service. Many websites have experienced different types of DDoS attacks, an accurate understanding of DDoS is crucial to protecting websites. Which of the following descriptions about DDoS attack is the most accurate one?

51.

52. Which of the following statements is wrong when comparing RDS with self-built database?

53. 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?

54. Alibaba Cloud relational database service (RDS) is a stable, reliable and elastic online database service. RDS supports below database types _______________? (Choose three.)

55. 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.

56. 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.)

57. 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.