Real Alibaba Cloud ACA-Developer Exam Questions [Updated 2022]
ACA-Developer Exam Dumps Pass with Updated 2022 ACA Developer Certification
Alibaba Cloud ACA-Developer Exam Syllabus Topics:
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NEW QUESTION 32
A developer was sending a request to Key Management Service (KMS) through the KMSAPI interface, and found that the key management service cannot be accessed. What is a possible reason?
- A. The user key master key is in PendingDeletion state
- B. User key master key is in Disabled state
- C. The HTTPS protocol is not enabled
- D. The user key master key is in Pendinglmport state
Answer: A
NEW QUESTION 33
Which of the following statements about migrating data into and out of Object Storage Service (OSS) are correct? (Number of correct answers: 3)
- A. A migration job occupies the network resources of the source and the destination. To ensure business continuity, we recommend that you specify a rate limit for a migration Job or run the migration job during an off-peak period.
- B. Online migration supports both migrating buckets at a time, and migrating all the data under an Alibaba Cloud account at a single time.
- C. You cannot migrate data between OSS buckets if the data at the source is stored in a bucket of the Archive type.
- D. You can migrate data between OSS buckets in any of the following conditions: Buckets are located within the same region, buckets are located across regions and buckets belong to different Alibaba Cloud accounts.
Answer: B,C,D
NEW QUESTION 34
When a developer uses the LogGroup function to package multiple logs and writes data through the API/SDK of the Log Service, it receives error code 403 or 500 continiously. What are the possible reasons?
- A. Insufficient space in the Logstore partition
- B. The log size written to log group is less than 5MB
- C. The target partition in the Logstore is not specified
- D. The "Topic" data field is empty
Answer: A
NEW QUESTION 35
Which of the following permission control policies does Object Storage Service (OSS) provide for access to objects stored in a bucket? (Number of correct answers: 4)
- A. Dynamic blacklist
- B. Bucket Policy
- C. ACL
- D. STS authorization
- E. IntranetAccess
- F. RAM Policy
- G. Object Policy
Answer: B,C,D,G
NEW QUESTION 36
Which of the following statements describe the trace/D and spanID in a service tracking system (such as Zipkin) correctly? (Number of correct answers: 3)
- A. Traceld is used to distinguish the sequence of calls between different services of the system, spanld is used to concatenate all the paths that a certain request traverses in the system.
- B. Spanld can locate the position of a request in the system call, and who its upstream and downstream dependencies are respectively.
- C. When the user's request enters the system, a globally unique traceld will be generated on the first layer of the calling network.
- D. The tracelD will be called with each layer and passed back continuously, so through traceld, the path of a user request in the system can be connected in series.
Answer: A,B,C
NEW QUESTION 37
A developer received a response code of 409 when trying to use a KMS key via the API. Given that a 409 response was returned, which of these states could the KMS key be in? (Number of correct answers: 3)
- A. PendingDeletion
- B. PendingCreate
- C. Disabled
- D. Pendinglmport
Answer: A,C,D
NEW QUESTION 38
Which of the following options correctly describes CloudMonitor Custom Monitoring and Custom Events?
(Number of correct answers; 2)
- A. Custom Events is for periodic and continuous collection of time series monitoring data, queries, and alarms.
- B. Custom Monitoring is used for collection of non-continuous event data, such as information about ECS instance restarts.
- C. Custom Monitoring is used for periodic and continuous collection of time series monitoring data, queries, and alarms.
- D. Custom Events are used for collection of continuous event type data, queries, and alarms.
Answer: B,C
NEW QUESTION 39
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 targeted RDS instance is a disaster recovery instance
- B. No instance type (specification) was included in the request parameters
- C. The instance is in the running state
- D. The instance has a backup task being executed
Answer: B,C,D
NEW QUESTION 40
A developer runs a web application on a physical machine in an IDC. The machine is running Ubuntu Linux.
Which of the following is the recommended method if he wants to migrate this web application onto an Alibaba Cloud ECS instance?
- A. Use SMC(Server Migration Center) to collect data from the origin physical server. Create an intermediate ECS instance on Alibaba Cloud and wait for the data transfer to complete. Then generate a new image directly from that intermediate ECS instance.
- B. Use a third-party image creation tool to create an image from the physical server. Upload the image to the ECS console to turn it into a custom image. Then, use the custom image to create ECS instances.
- C. Use a third-party image creation tool to create an image from the physical server. The image is then uploaded to Alibaba Cloud Object Storage Service (OSS) for storage. In the ECS console, import that image from OSS, then, create an ECS instance from the custom image.
Answer: B
NEW QUESTION 41
Which of the following statements describes AKs (Access Keys) incorrectly?
- A. AccessKey Secrets for RAM sub-accounts can be queried at any time on the Console Interface after creation
- B. You can use AK to construct an API request and the corresponding resources can be manipulated if your request successfully..
- C. An AccessKey ID and AccessKey Secret cannot be used separately
- D. AK can refer to both the AccessKey ID and the AccessKey secret
Answer: D
NEW QUESTION 42
A job hunting website stores user's resumes in Object Storage Service (OSS) The current resume upload process is as follows:
7. Users upload resumes
2. The server responds to the upload request
3. The resume is uploaded to the server
4. 1 he server uploads the resume to OSS
Which of the following methods can be used to upload objects to OSS without requiring Step 3?
- A. Form Upload
- B. Append Upload
- C. Multipart Upload
- D. Simple Upload
Answer: B
NEW QUESTION 43
Which of the following cloud services can be integrated with Alibaba Cloud KMS (Key Managed Service)?
(Number of correct answers: 3)
- A. Relational Database Service (RDS)
- B. Object Storage Service (OSS)
- C. Elastic Compute Service (ECS)
- D. Server Load Balancer (SLB)
Answer: A,B,C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/141499.htm
NEW QUESTION 44
Which of the following descriptions of Alibaba Cloud ECS storage are correct? (Number of correct answers:
3)
- A. Cloud Disks come In several different varieties: ESSD (Enhanced Solid State) Cloud Disks. SSD (Solid State ) Cloud Disks, and high-efficiency Cloud Disks.
- B. Both Local Disks and Cloud Disks use a multi-copy distributed storage mechanism, which has low latency, high performance, durability, and high reliability, and supports creation, expansion and release at any time.
- C. Alibaba Cloud provides a wealth of block storage products for ECS, including Cloud Disks (virtualized storage) and Local Disks (physically attached to the server(s) that host your ECS Instances).
- D. Two types of Cloud Disks can be attached to an ECS: System Disks and Data Disks. System Disks host the ECS instances operating system.
Answer: A,B,C
NEW QUESTION 45
Which of the following operations can be performed through Log Service sAPI? (Number of correct answers:
3)
- A. Collect logs based on Logtail configuration and Logtail machine group information
- B. Create a Logstore, write and read logs to the Logstore
- C. Access control for different users
- D. Deliver logs to OSS for storage and analysis
Answer: A,B,C
NEW QUESTION 46
Which of the following options are correct for Multipart Upload and Resumable Upload in Object Storage Service (OSS)? (Number of correct answers: 3)
- A. After an upload is interrupted, the portions of the file which have successfully uploaded prior to the interruption will be saved in the OSS bucket
- B. If the upload fails due to an accident during the uploading of fragments, you need to upload all the fragments again
- C. Use Multipart Upload to upload parts of a file in parallel to speed up the upload process
- D. Multipart Upload is usually used when the size of the file to be uploaded is large
Answer: B,C,D
NEW QUESTION 47
A Developer is asked to implement a caching layer in front of RDS. Cached content is expensive to regenerate in case of service failure. Which implementation below would work while maintaining maximum uptime?
- A. Implement ApsaraDB for Redis in Standard Mode
- B. Install Redis on an ECS instance
- C. Implement ApsaraDB for Redis in Cluster Mode
- D. Migrate the ROS database to HBase to save the cache layer
Answer: D
NEW QUESTION 48
Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)
- A. DMS (Data Management Service)
- B. Sentinel
- C. Redis-cIl
- D. aliyun-cll
Answer: B,C
NEW QUESTION 49
Which of the following detection protocol is NOT supported by CloudMonitor's Site Monitoring feature?
- A. HTTP(S)
- B. TCP/UDP
- C. SNMP
- D. DNS
Answer: C
NEW QUESTION 50
Which of the following is NOT a feature of Alibaba Cloud's Cassandra database service?
- A. Centerless distributed architecture
- B. Cluster storage, strong expansion of read and write capabilities
- C. Enterprise-level capabilities such as disaster tolerance, backup and recovery, security, and monitoring across data centers
- D. Supports both narrow and wide tables, providing flexible schema functions
Answer: D
NEW QUESTION 51
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. Avoid using version management.
- B. Use OSS's built in lifecycle management capabilities to move old versions of objects to Archival Storage.
- C. 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.
Answer: B
NEW QUESTION 52
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