ACP-Cloud1認定の有効な試験問題集解答学習ガイド！（最新の72問題)
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Alibaba Cloud ACP-Cloud1 認定試験の出題範囲：
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質問 35
When you create an Alibaba Cloud VPC. a VRouter and a route table will be created automatically. Which of the following statements is NOT correct about the route table?
- A. Each VRouter may have multiple route tables.
- B. This route table cannot be deleted
- C. The routing entries of the route table can not be modified manually.
- D. When a VPC is deleted, the corresponding route table is also deleted.
正解: D
質問 36
When using Alibaba Cloud SLB to forward layer 7 (HTTP) service requests. SLB will replace the IP address in the HTTP header file to forward requests.
Therefore the source IP address that can be seen on the backend ECS instance is the IP address of SLB instead of the clients real IP address.
- A. True
- B. False
正解: A
質問 37
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
正解: A
質問 38
You are designing a solution for a startup company, the proposed solution is like this You suggest they use ECS instances to process requests from mobile App clients, and use SLB to distribute data traffic and ensure the load across each backend ECS instance is balanced.
Moreover to deal with volatile fluctuations in business volume (page views are much higher on the weekends), you also suggest they use Auto Scaling to dynamically increase or reduce computing resources.
The company is satisfied with the solution you proposed. However, they have one concern that when removing an idle instance from the scaling group: if Auto Scaling shuts the instance down directly, the service running on that instance will be abruptly terminated, resulting in poor user experience.
In order to eliminate your customer's concern, which of the following solutions should you recommend them?
- A. First, insert a script into the image for creating the ECS instance Second, make the script run automatically when the operating system in this ECS instances is about to shut down. This script contains the processing logic that can ensure the instance finish all the remaining tasks before shutting down.
- B. Find the ECS instance that is going to be removed from the backend server pool of the SLB instancer and automatically set the weight of this ECS instance to 0. This instance will not be assigned with new requests, and will be automatically removed from the backend server pool after existing tasks are completed.
- C. Use the Lifecycle Hook function embedded m Auto Scaling Define a suitable timeout and a web hook to do the necessary work before the instance is removed.
- D. Find the ECS instance that is going to be removed from the backend server pool of the SLB instance, and manually remove this instance from the backend server pool Applications running on this ECS instance will normally return results, but this instance will not be assigned with new requests.
正解: C
質問 39
Object Storage Service (OSS) supports access logging. A bucket owner can activate access logging for their buckets in the OSS management console. When access logging is activated for bucket A, OSS automatically accesses the request logs for this bucket (in hours) and generates and writes an object to the user-specified bucket B according to certain naming rules. Which of the following statements is true for OSS logging?
- A. Buckets A and B can belong to different users.
- B. Buckets A and B must be different buckets.
- C. Buckets A and B can be separate buckets (or a single bucket) but they must belong to the same user
- D. Buckets A and B must be the same bucket.
正解: C
質問 40
Alibaba Cloud Server Load Balancer (SLB) provides services for distributing traffic among multiple ECS instances SLB can expand the application system's service capacity through traffic distribution, and improve the system's availability by eliminating SPoFs (Single Points of Failure). Which of the following statements are correct? (Number of correct answers; 2)
- A. When recreating an SLB instance that has an Internet IP address, a new Internet IP address will be assigned to the SLB instance.
- B. Before using SLB to provide external services, make sure that you have installed and correctly configured the SLB agent on all of the backend ECS instances.
- C. One of SLB's features is the Health Check. If some of the backend ECS instances are down, whereas other backend ECS instances can still provide services, then the system can continue to work normally.
- D. SLB provides a function to automatically synchronize data among backend ECS instances using rsync remote synchronization.
正解: C,D
質問 41
Recently, response speed of a certain Alibaba Cloud Elastic Compute Service (ECS) instance is unacceptably slow. By using CloudMonitor we discovered that the ECS instance utilizes more than 80% of the assigned bandwidth.
Which of the following approach can address this issue and without the need to reboot the ECS instance?
- A. None of the above
- B. Upgrade the CPU and memory of the ECS ins
- C. Add a disk to the ECS instance
- D. Upgrade the bandwidth of the ECS instance
正解: D
質問 42
If you need to accelerate a certain domain name (such as abc.com) via Alibaba Cloud Content Delivery Network (CDN), you must add it to "CDN Domain Name List" in the CDN service. After added successfully, you will get a CNAME address A Next, you need to modify domain name resolution and direct the domain name (such as abc.com) to CNAME address A.
Which of the following is a NOT correct description of modifying domain name resolution?
- A. The DNS service provider used by the domain name (such as abc.com) must support intelligent resolution.
- B. The DNS service provider used by the domain name (such as abc.com) can be companies other than Alibaba Cloud.
- C. The CNAME address allocated to the domain name (such as abc.com) will point to an IP address. This IP address resolving mechanism is intelligently managed by Alibaba Cloud CDN system.
- D. If your domain name (such as abc.com) is transferred to Alibaba Cloud in advance, and managed by the same Alibaba Cloud account, you can perform one-step resolution modification.
正解: D
質問 43
You would like to deploy your applications on Alibaba Cloud to meet requirements including cost reduction, improving service availability, fast deployment- and redundant backup Alibaba Cloud_________products can help meet these requirements (Number of correct answers 3)
- A. Reasonable selection of Regions/Zones meets the location needs of application deployment as well as the demands for redundantly backup critical business applications and data.
- B. Elastic Compute Service (ECS) image achieve efficient and convenient deployment.
- C. Utilizing Content Delivery Network (CDN) can meet the demands for redundant backup.
- D. Utilizing Server Load Balancer (SLB) and ECS instances can improve data reliability.
- E. Elastic Compute Service (ECS) snapshot satisfies the needs of rapid recovery of applications and data.
正解: A,C,D
質問 44
Which of the following statements is most accurate about the Data Transmission Service (DTS) database migration function?
- A. Supports warning when source and destination has some unresolved conflict found.
- B. Supports migrating MySQL databases from external sources.
- C. Supports all of the above functions.
- D. Supports database schema replication between instances.
正解: D
質問 45
Alibaba Cloud SLB can distribute user requests to backend ECS instances. These ECS instances must have the same specification (CPU, Memory)
- A. True
- B. False
正解: A
質問 46
Alibaba Cloud Object Storage Service (OSS) is a cloud storage service that features massive capacity, outstanding security, low costs, and high reliability. In an OSS bucket, all elements are stored as________.
- A. Stubs
- B. Keys
- C. Objects
- D. Hashes
正解: C
解説:
OSS does not use a hierarchical structure for objects, but instead uses a flat structure. All elements are stored as objects in buckets. To use OSS in the same manner in which local file systems are used, you can configure Cloud Storage Gateway (CSG).
https://www.alibabacloud.com/help/doc-detail/31817.htm
質問 47
To meet business requirements, a user requires that the backend server of an SLB instance include a primary ECS instance and a secondary ECS instance. When the primary instance is working properly, the traffic is only forwarded to the primary ECS, when the primary instance is down, traffic is switched to the standby instance. In this case, you can create an active/standby server group on the backend of the SLB instance Which kind of listener supports this feature? (Number of correct answers: 2)
- A. HTTPS
- B. UDP
- C. HTTP
- D. TCP
正解: A,B
質問 48
When a customer uses Alibaba Cloud Object Storage Service (OSS) service and finds there exist an amount of Internet downstream traffic, he/she can use Alibaba Cloud Content Delivery Network (CDN) service to reduce the traffic cost.
Because the Internet traffic cost of CDN is lower than that of OSS, moreover, the back-to-source traffic cost from CDN to OSS is also lower than a user access to OSS directly.
- A. True
- B. False
正解: A
質問 49
Alibaba Cloud CloudMonitor is a service that monitors Alibaba Cloud resources and Internet functions currently provided by CloudMonitor? (Number of correct answers: 3)
- A. Customized monitoring
- B. Cloud service monitoring
- C. Operation auditing
- D. Site monitoring
- E. Custom firewall
正解: A,B,D
解説:
https://cloudacademy.com/course/alibaba-security-monitoring-1275/introduction-to-cloud-monitor/#:~:text=Cloud%20Monitor%20is%20a%20service,safeguard%20your%20products%20and%20business.
質問 50
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 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?
- A. We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen
- B. Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1
- C. 100% of loads will be assigned to ecs__inst1, and the remaining 4 ECS instances will stay idle
- D. Based on request level parameters of external requests, all requests with a request level parameter of 100 will be transferred to ecs_inst1
正解: A
質問 51
By using ApsaraDB for RDS to implement read/write splitting, which of the following can be achieved? (Number of correct answers 2)
- A. Both read and write requests are distributed to multiple instance
- B. Read/write requests to the database are separated.
- C. Read requests are distributed to multiple instances.
- D. Write requests are distributed to multiple instances.
正解: A,D
質問 52
The difference between public and private Server Load Balancers (SLBs) is that private SLBs connect to their backend ECS instances using the private network (Intranet) while public SLBs connect to their backend ECS instances using the public network (Internet).
- A. True
- B. False
正解: B
質問 53
After stopping an Alibaba Cloud Elastic Compute Service (ECS) instance, since the ECS instance is stopped, you will not be charged for anything related to that ECS instance until you start the instance again regardless of which region the instance is located in.
- A. True
- B. False
正解: A
質問 54
Alibaba Cloud Content Delivery Network (CDN) performs content acceleration with the support of intelligent DNS resolution The following function_________is NOT included in intelligent DNS resolution.
- A. If a user activates mirror sites in different IDCs, intelligent DNS resolution can achieve load balancing by guiding customers in different places to different mirror sites.
- B. The intelligent DNS resolution can parse the same domain name into different IP addresses based on the IP of different visitors.
- C. A user request is directed to the server nearest to the customer based on location information of the pre-configured IP section.
- D. The intelligent DNS resolution supports web page content caching. A user will receive data from the origin site at first-time access, and then will be reading data from cache in subsequent requests
正解: A
質問 55
After creating an RDS for MySQL read-only instance, which of the following CAN NOT be performed by the read-only instance in RDS management console?
- A. Specification change
- B. Intranet/Internet switchover
- C. SQL log auditing
- D. Parameter configuration
正解: D
質問 56
As a concept stem from cloud computing, cloud storage service provides on-demand storage and data services to users through a unified interface Which of the following characteristics about cloud storage are correct? (Number of correct answers: 4)
- A. Ultra-large scale: Data storage can reach TB or even PB level
- B. Transparent service: Provides the service through a single SDK
- C. High scalability Storage capacity can be dynamically scaled to meet the needs.
- D. High reliability and availability: Provides very high reliability and availability through technologies like 3 redundant copies, automatic failure recovery, etc.
- E. Service on demand Cloud storage has a huge resources pool, users can apply for and use the resources on demand.
- F. Management and maintenance: To prevent emergent service termination, users need to know the underlying detail like how the data is archived in the resource pool.
正解: B,C,D,E
質問 57
The backend server pool of an Alibaba Cloud SLB contains multiple ECS instances, which may have different service capacities. To exploit the different service capacities of backend ECS instances, which of the following statements is correct?
- A. Choose Round-Robin model and ECS instances with higher capacities will surely be assigned with more requests.
- B. SLB cannot assign more requests to certain ECS instances.
- C. Choose Weighted Least-Connection mode, and ECS instances with higher capacities will surely be assigned with more requests.
- D. Choose Weighted Round Robin mode to set higher weights to ECS instances with higher capacities The higher the weight of the backend ECS instance the higher chance that the instance will receive requests.
正解: D
質問 58
RDS accounts can be used to connect with the databases created on a given RDS instance. Each account can be bound with multiple databases. Yet, the read/write permissions of each database can only be assigned to one RDS account
- A. True
- B. False
正解: A
質問 59
An online education website is built based on ECS. SLB and Auto Scaling, which greatly reduces resource cost, O&M cost and without compromising system stability and user experience.
Now. the website admin wants to keep the user information (such as source IP, accessed URLs, and duration on each page) for analysis to support their upcoming campaign events In this case, which of the following statements is NOT correct?
- A. Synchronize user-Synchronize user-related access information to ApsaraDB for Memcache in real time or quasi real time. Then, access Memcache using an application or make the data in Memcache persistent based on certain rules and then can use the persistent data for further analysis.
- B. Let each ECS instance in the scaling group keeps the user access information it processes Thus, the data saved by these ECS instances can be accessed and analyzed at any time, making the solution not only simple, but also efficient reliable, and cost-effective.
- C. Save user-related access information to ApsaraDB for RDS in real time or quasi real time, which can then be used for performing query and analysis.
- D. Synchronize user-related access information to OSS in real time or quasi real time for further use
正解: A
質問 60
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