New 2021 Latest Questions ACA-Developer Dumps - Use Updated Alibaba Cloud Exam
Latest ACA-Developer Exam Dumps Alibaba Cloud Exam from Training Expert Actual4dump
NEW QUESTION 57
Which of the following web applications are suitable for deployment on Simple Application Server (SAS), as compared with LCS? (Number of correct answers: 3)
- A. Set up a NoSQL database service
- B. Quickly build a personal, learning, or test environment
- C. Quickly build a small e-commerce website
- D. Quickly build serverless site using Function Compute
- E. Quickly build a personal blog website
Answer: B,D,E
NEW QUESTION 58
Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3)
- A. The STS service supports the use of both HTTP and HTTPS protocols
- B. When calling the STS API, in order to ensure the safe calling of the API, Alibaba Cloud will authenticate each API request through a signature when each API call is made
- C. A STS request consists of an access address, communication protocol, request method, request parameters and character encoding
- D. Through the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud API or use the web console
Answer: A,B,C
NEW QUESTION 59
Log Service uses a semi-structured data model to define a log. This mode contains five data fields:
Topic, Time, Content, Source, and Tags. Log Service has different requirements for the format of each field in the log. Which of the following fields cannot be empty characters? (Number of correct answers: 4)
- A. Tags
- B. Source
- C. Time
- D. Content
- E. Topic
Answer: A,B,C,E
NEW QUESTION 60
When connecting to the Alibaba Cloud RDS database, in order to improve the completeness and integrity of the connection, you can enable SSL encryption and install an SSL CA certificate for the required application service. Which of the following statements are correct? (Number of correct answers: 3)
- A. When using read/write splitting, you can also enable SSL encryption to improve the security of the connection.
- B. It is discovered that an Alibaba Cloud RDS SSL certificate is about to expire, and the validity period needs to be updated, requiring that the certificate be updated, then reinstalled. This will restart the RDS instance.
- C. Due to the way in which SSL encryption is implemented, enabling SSL encryption will significantly increase the CPU usage rate. Enable SSL encryption when there is an encryption requirement for the external network link. The intranet link is relatively safe, and generally no link encryption is required.
- D. If the RDS instance is a multi-node instance, the system will trigger the active/standby switch after the SSL service is disabled.
Answer: A,C,D
NEW QUESTION 61
In order to have your applications interact with Alibaba Cloud RabbitMQ, you need to create related MQ resources first. Which of the following resources must be created? (Number of correct answers: 3)
- A. Queue
- B. Exchange
- C. Vhost
- D. Topic
- E. Broker
Answer: A,B,D
NEW QUESTION 62
Which of the following is NOT required for SMC (Server Migration Center) to migrate a server to Alibaba Cloud?
- A. Import the migration source information to the SMC console.
- B. The SMC client transfers the source data to an intermediate ECS instance.
- C. From the SMC console, configure the type of disk image to be generated during the migration.
- D. The SMC backend service generates a target Alibaba Cloud image based on the migration source.
Answer: A
NEW QUESTION 63
A developer is making the ModifyDDInstanceSpec API call to change the specifications of an RDS instance, but the operation fails. Why could this be? (Number of correct answers: 3)
- A. The instance is in the running state
- B. The targeted RDS instance is a disaster recovery instance
- C. The instance has a backup task being executed
- D. No instance type (specification) was included in the request parameters
Answer: A,C,D
NEW QUESTION 64
Which of the following options correctly describes CloudMonitor Custom Monitoring and Custom Events?
(Number of correct answers; 2)
- A. Custom Events are used for collection of continuous event type data, queries, and alarms.
- B. Custom Monitoring is used for periodic and continuous collection of time series monitoring data, queries, and alarms.
- C. Custom Monitoring is used for collection of non-continuous event data, such as information about ECS instance restarts.
- D. Custom Events is for periodic and continuous collection of time series monitoring data, queries, and alarms.
Answer: B,C
NEW QUESTION 65
Which of the following operations can be performed through Log Service sAPI? (Number of correct answers:
3)
- A. Access control for different users
- B. Collect logs based on Logtail configuration and Logtail machine group information
- C. Create a Logstore, write and read logs to the Logstore
- D. Deliver logs to OSS for storage and analysis
Answer: A,B,C
NEW QUESTION 66
Company A has a large number of files store in Alibaba Cloud OSS that need to be deleted (numbering in the tens of thousands). What is the fastest, easiest way to delete these files?
- A. Call the API from a script, deleting files in batches
- B. Manually delete them one by one
- C. Directly delete the bucket
- D. Configure a life cycle rule that matches the entire bucket, and delete all files after one day
Answer: B
NEW QUESTION 67
Alibaba Cloud's ECS disk snapshotting tool can create crash-consistent snapshots for all types of Cloud Disks.
It is a convenient and efficient disaster recovery method. It is often used for data backup, custom mirroring, application disaster recovery, etc. Which of the following is NOT a correct description of disk snapshots?
- A. Snapshot rollbacks can be performed while the ECS instance is running.
- B. In the event of a system failure, you can use a snapshot to roll back the Cloud Disk to an earlier point in time.
- C. Snapshots can be created manually through the web console or command line tools, or automatically according to a schedule.
- D. A snapshot is a backup file of the cloud disk data state at a certain point in time. The first snapshot of the cloud disk is a full snapshot of the ac usage. Empty data blocks are not backed up. All subsequent snapshots are incremental snapshots, and only changed data blocks are stored.
Answer: D
NEW QUESTION 68
A development team currently supports an application that is designed to be deployed on a single server's local memory As part of migrating to Alibaba Cloud, the team needs to use Auto Scaling, and must therefore move their game state data off of their servers, so that they can automatically scale up and down without losing game data. Where should the team store these game results to best allow for consistent results without impacting performance?
- A. OSS
- B. Log Service
- C. Redis
- D. RDS
Answer: C
NEW QUESTION 69
A developer is writing logs through the Log Service API, and can see via the Logstore monitorin metrics that write traffic is about 10 MB/s, but a 403 error is reported during the writing process. Which of these is a possible cause?
- A. The target partition in the Logstore is not specified
- B. The write throughput of a single partition is limited, and the 10 MB/s write traffic exceeds
- C. There is significant network delay
- D. There is not enough space in the Logstore partition
Answer: A
NEW QUESTION 70
Alibaba Cloud Content Delivery Network (CDN) is a suitable product for the following scenarios: (Number of correct answers: 2)
- A. BBS forums with less than 100 daily page views.
- B. Static sites with more than 100,000 daily page views.
- C. Images, HTML, CSS and JS files on a medium-sized E-commerce website.
- D. News websites with more than 30 million daily page views and users are all from Singapore.
Answer: A,D
NEW QUESTION 71
Which of the following descriptions of Alibaba Cloud's SSL certificate service are correct? (Number of correct answers: 2)
- A. EV certificates are suitable for large enterprises, financial institutions, etc.
- B. OV certificates are suitable for personal websites.
- C. Alibaba Cloud SSL Certificate Service supports the purchase of three types of certificates: DV certificates, OV certificates, and EV certificates.
- D. DV level certificates are suitable for government organizations, enterprises, educational institutions, etc.
Answer: B,C
NEW QUESTION 72
Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?
- A. The plaintext of Alibaba Cloud's private key is usually stored on disk and backed up regularly
- B. Alibaba Cloud Certificate Service keys are loaded Into memory in plaintext format ONLY when needed
- C. Alibaba Cloud Certificate Service uses symmetric encryption to save the certificate private key
- D. Alibaba Cloud uses the built-in functionality of the SSL certificate service to encrypt and store the private key to certificates private key
Answer: A
NEW QUESTION 73
Alibaba Cloud Log Service is a Pay-As-You-Go service. The billing unit is 7 day, and the configuration can be adjusted at any time: fees are charged according to actual usage. Which of the following are the main charges for Log Service? (Number of correct answers: 3)
- A. Read and write traffic
- B. Index traffic after index configuration
- C. Storage capacity
- D. Query analysis
Answer: A,B,C
NEW QUESTION 74
By default, Function Compute creates an instance for each request Function compute allows you to create multiple instances concurrently to reduce costs and improve execution efficiency Which of the following scenarios is NOT suitable for enabling the feature of handling multiple requests on a single instance? (Number of correct answers: 2)
- A. The function has a shared state and cannot be accessed concurrently.
- B. Functions processes independent data objects.
- C. Requests are waiting for responses from the downstream service for an extended period of time.
- D. A request consumes a large amount of CPU and memory resources.
Answer: A,C
NEW QUESTION 75
Which of the following programming languages are supported by the Alibaba Cloud SDK? (Number of correct answers: 3)
- A. PHP
- B. Swift
- C. Bash shell
- D. Java
- E. Python
Answer: A,D,E
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/74712.htm
NEW QUESTION 76
When versioning is enabled for an OSS Bucket, previous versions of objects will be retained, using storage space and incurring additional costs. How can you save space and reduce costs, while retaining some of the benefits of object versioning?
- A. Use the Function Compute Service to regularly check for and delete old versions of objects.
C Use OSS s built in lifecycle management capabilities to automatically delete old versions of objects after a set time. - B. Avoid using version management.
- C. Use OSS's built in lifecycle management capabilities to move old versions of objects to Archival Storage.
Answer: C
NEW QUESTION 77
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Updated Test Engine to Practice ACA-Developer Dumps & Practice Exam: https://www.actual4dump.com/Alibaba-Cloud/ACA-Developer-actualtests-dumps.html