[2022年01月] 厳密検証されたACP-Cloud1問題集と解答でACP-Cloud1問題集と正解付き [Q32-Q47]

[2022年01月] 厳密検証されたACP-Cloud1問題集と解答でACP-Cloud1問題集と正解付き

ベストAlibaba Cloud Computing学習ガイドはACP-Cloud1試験合格させます

質問 32
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 33
If you want to build a secure and isolated network environment on Alibaba Cloud; meanwhile, design your network topology and specify Intranet IP addresses or CIDR Blocks in this network environment as needed, you can choose

A. Leased line
B. Express Connect
C. Auto Scaling
D. Virtual Private Cloud (VPC)

正解: D

質問 34
After activating an Alibaba Cloud Elastic Compute Service (ECS) instance, you want to monitor the status of the ECS instance via Alibaba Cloud console. Therefore: you must activate and purchase Alibaba Cloud CloudMonitor service to meet this demand.

A. True
B. False

正解: B

質問 35
When using Alibaba Cloud SLB, users can enable the health check function If a backend ECS instance A is running abnormally, SLB will isolate it and forward the requests to other ECS instances, and when the backend ECS instance A is back to normal, SLB will again forward requests to it.

A. True
B. False

正解: A

質問 36
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 37
All RDS for MySQL backups are full backups.

A. True
B. False

正解: A

質問 38
OSS supports multi-part uploading for large files, namely dividing a large file into multiple parts and uploading them in order. This function is suitable for scenarios such as uploading large files or uploading files with poor connectivity.
After completing all the multi-part uploading tasks, if you forget to invoke the "Complete Multipart Upload" interface, there will be fragment files left in OSS, occupying bucket storage space-To facilitate deleting those files, OSS provides the________function.

A. Fragment management
B. Online batch deletion
C. OpenAPI batch deletion
D. Bucket clearing

正解: B

質問 39
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 40
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 41
A new media company uses a mobile app to provide news and information services. They utilize Auto Scaling to add/reduce ECS instances dynamically to address service traffic spikes.
Based on the estimation of their service and technical personnel the company thinks they require 10 ECS instances during idle hours and 10 to 20 ECS instances (dynamically adjusted) during some busy hours, which are normally from 07:30 to 09:00 and from 18:30 to 20:00 In the scaling group; they set the "Minimum number of instances" to 10 and "Maximum number of instances" to 20.
To simplify deployment tasks and save costs, which of the following scaling modes should they choose?

A. Healthy mode
B. Fixed quantity mode
C. Event-triggered mode
D. Scheduled mode

正解: B

質問 42
If an administrator often needs to manage multiple ECS instances in an Alibaba Cloud VPC through the Internet Which of the following solutions can meet this need at low costs and without affecting system security.

A. Modify the VPC Security Group policy, to allow access from the Internet.
B. None of these answers are correct.
C. Choose an ECS instance from VPC and make it as the bastion host And then, apply an EIP and bind it to this ECS instance. After that the administrator can manage other ECS instances through this bastion host.
D. Bind an EIP to each of the ECS instances, and Jog on to each of these ECS instances to manage them.

正解: B

質問 43
Names of the files in each OSS bucket must be unique Also, they can be renamed.

A. True
B. False

正解: B

質問 44
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 45
Which of the following statements is NOT correct, when comparing RDS with a self-built database?

A. RDS provides automatic backup while self-built databases require you to prepare storage space for backup copies and regularly verify that these copies can be restored.
B. Self-built database support quick deployment and elastic scaling.
C. RDS requires no O&M while self-built database require a dedicated DBA for maintenance, which results in high HR costs.
D. RDS features a high availability of 99 95% while self-built databases require you to implement data protection primary-standby replication, and RAID all by yourself.

正解: B

質問 46
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.