Real ACA-Developer are Uploaded by VCEPrep provide 2021 Latest ACA-Developer Practice Tests Dumps.
All ACA-Developer Dumps and ACA Developer Certification Training Courses Help candidates to study and pass the ACA Developer Certification Exams hassle-free!
Alibaba Cloud ACA-Developer Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
| Topic 5 |
|
| Topic 6 |
|
| Topic 7 |
|
| Topic 8 |
|
| Topic 9 |
|
| Topic 10 |
|
| Topic 11 |
|
| Topic 12 |
|
NEW QUESTION 46
Which of the following statements about migrating data into and out of Object Storage Service (OSS) are correct? (Number of correct answers: 3)
- A. Online migration supports both migrating buckets at a time, and migrating all the data under an Alibaba Cloud account at a single time.
- B. You cannot migrate data between OSS buckets if the data at the source is stored in a bucket of the Archive type.
- C. 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.
- 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: A,B,D
NEW QUESTION 47
Alibaba Cloud Link Tracing Analysis supports call link reporting based on the Open Tracing standard. Which of the following client types does link tracing support? (Number of correct answers:3)
- A. Skywalklng
- B. Zipkln
- C. Jaeger
- D. Pinpoint
Answer: C
Explanation:
Explanation
https://www.alibabacloud.com/blog/opentracing-implementation-of-jaeger_594957
NEW QUESTION 48
Which of the following is NOT a feature of Alibaba Cloud's Cassandra database service?
- A. Cluster storage, strong expansion of read and write capabilities
- B. Enterprise-level capabilities such as disaster tolerance, backup and recovery, security, and monitoring across data centers
- C. Centerless distributed architecture
- D. Supports both narrow and wide tables, providing flexible schema functions
Answer: D
NEW QUESTION 49
Which
of the following parameter locations should be specified for the parameter of key1 where the request URL is in the form: http://somesite.com/test?key1 =[value1] ?
- A. HTTP Header
- B. HTTP Body
- C. Query
- D. Parameter Path
Answer: D
NEW QUESTION 50
When you use SQL statements to access tables in a database without an index configured, a full table scan will be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data and consume a lot of the database's resources. Which of the following options are best practices when creating database indexes? (Number of correct answers: 3)
- A. Adhere to the rightmost prefix principle when using composite indexes.
- B. Apply indexing to fields of fixed length (preferably not long fields).
- C. Applies indices to fields that contain many records.
- D. table should not contain more than 6 indexed fields.
- E. Add an index to a field that is frequently queried but does not frequently perform add, delete, or modify operations.
Answer: B,C,E
NEW QUESTION 51
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 has a backup task being executed
- B. No instance type (specification) was included in the request parameters
- C. The targeted RDS instance is a disaster recovery instance
- D. The instance is in the running state
Answer: A,B,D
NEW QUESTION 52
Which of the following options correctly describes CloudMonitor Custom Monitoring and Custom Events?
(Number of correct answers; 2)
- A. Custom Monitoring is used for collection of non-continuous event data, such as information about ECS instance restarts.
- B. Custom Events is for periodic and continuous collection of time series monitoring data, queries, and alarms.
- 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: A,C
NEW QUESTION 53
Which of the following is NOT a valid state for a scaling activity in Alibaba Cloud's Elastic Scaling Service ESS -also known as Auto Scaling) state of the scaling activity in the Alibaba Cloud elastic scaling group?
- A. Executing
- B. Failed
- C. Timeout
- D. Rejected
Answer: B
NEW QUESTION 54
An Elastic Compute Service (ECS) instance (private IP only) needs to read data from a RDS MySQL database in another VPC through a private IP address, and at the same time, RDS's public internet endpoint needs to be available for requests from some internet clients. Which steps must be taken to allow applications to access this RDS instance via both interfaces? (Number of correct answers: 2)
- A. Connect the two VPCs through CEN.
- B. Make sure that the security group of the ECS instance allows outbound access to the MySQL service port.
- C. Add the private and public IP addresses of all applications to the RDS whitelist.
- D. Configure a NAT gateway for the VPC to which the ECS instance belongs.
Answer: D
NEW QUESTION 55
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. News websites with more than 30 million daily page views and users are all from Singapore.
- D. Images, HTML, CSS and JS files on a medium-sized E-commerce website.
Answer: A,C
NEW QUESTION 56
On which operating systems can you install Alibaba Cloud command line tools? (Number of correct answers:
3)
- A. Android
- B. macOS
- C. Windows
- D. Linux
Answer: B,C,D
Explanation:
Explanation
https://www.alibabacloud.com/blog/how-to-manage-your-alibaba-cloud-linux-server-from-the-command-line-in
NEW QUESTION 57
Which of the following are correct, regarding RAM users? (Number of correct answers: 3)
- A. RAM users must be authorized by the Alibaba Cloud account to log in to the console or use the API to manage the resources owned by the Alibaba Cloud account.
- B. RAM users can be created under a single Alibaba Cloud account, corresponding to employees, systems, or applications.
- C. RAM users belong to an Alibaba Cloud account, but they can also operate as independent accounts with their own private resources, not visible to the primary Alibaba Cloud account.
- D. RAM users do not "own" the resources that they create (those belong to the Alibaba Cloud account itself), and RAM users cannot generate and pay their own individual bills (costs accrue to and are billed to the master Alibaba Cloud account).
Answer: A,B,C
NEW QUESTION 58
Which of the following features are unique to Alibaba Cloud Container Registry, as compared with Docker Hub? (Number of correct answers: 2)
- A. Container Registry can automatically build new Docker images when source code changes.
- B. For source code hosted on websites outside China, Container Registry can use servers outside China to build Docker images, even when you are using a Container Registry instance in Mainland China.
- C. You can set your image repository access to public or private.
- D. You can create and delete image repositories in different regions based on your needs.
Answer: B,C
NEW QUESTION 59
A developer accesses logs in a Log Service Logstore via the API. The error code returned by the server is 404.
Which of these could be the cause?
- A. Server internal error
- B. The requested digital signature does not match
- C. The log project (Project) does not exist
- D. Server is busy: please try later
Answer: C
NEW QUESTION 60
CloudMonitor's "Event Monitoring" feature provides you with event reporting, query, and alarm functions, Score 2 so that you can collect metrics on your running Alibaba Cloud systems, and receive alerts when something goes wrong. Which of these is NOT a correct description of the monitoring event types supported by CloudMonitor?
- A. For ECS, CloudMonitor supports the collection and reporting of important ECS operating system level events, such as application crashes.
- B. For E-MapReduce, CloudMonitor supports the collection and reporting of service component status, cluster creation failure, and timeout events.
- C. For Object Storage Service (OSS), CloudMonitor supports the collection and reporting of bucket upstream and downstream bandwidth which exceeds the flow control threshold or the user-selected reporting threshold.
- D. For Server Load Balancer (SLB), CloudMonitor supports the collection and reporting of HTTPS certificate expiration events, for certificates installed on SLB.
Answer: D
NEW QUESTION 61
you have a Node.js based application and you plan to migrate it to Alibaba Cloud Function Compute, which of the following steps is unnecessary?
- A. Create a single web application and upload the corresponding code package via the Function Compute console (or fcli)
- B. Configure program startup commands and access ports in the Function Compute console
- C. Start and verify the application in the Function Compute console
- D. Manually install the Node. Js package in the Function Compute console
Answer: D
NEW QUESTION 62
Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)
- A. aliyun-cll
- B. DMS (Data Management Service)
- C. Sentinel
- D. Redis-cIl
Answer: C,D
NEW QUESTION 63
When using Alibaba Cloud CDN, a visitor's request will first be routed to a CDN edge node, and in the event of a cache miss at this edge node, the node will fetch data from the origin site (back-to-source request). Even with this redirection, it is possible for the origin site to see the visitors real IP address. Which of the following statements about obtaining the visitor's real IP address are correct? (Number of correct answers: 2)
- A. You can activate the "record visitor's real IP" function in the Alibaba Cloud CDN console, then you can directly view visitor's IP addresses from the Alibaba Cloud CDN access logs.
- B. In Windows, if IIS is used, after installing the "F5XForwardedFor" extension module, the visitor's real IP address can be seen via IIS logs.
- C. A visitor's real IP address is stored in the "X-Forwarded-For" HTTP header It can be directly obtained via Apache or NGINX logs.
- D. A visitor's real IP address can only be obtained by modifying the site or web application.
Answer: B,D
NEW QUESTION 64
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 OSS's built in lifecycle management capabilities to move old versions of objects to Archival Storage.
- B. Avoid using version management.
- 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: A
NEW QUESTION 65
By default Function Compute cannot access resources within a VPC network group. To enable Function Compute to access resources located in a VPC, which of the following parameters needs to be configured?
(Number of correct answers: 3)
- A. vpcld
- B. securityGroupId
- C. vSwitchlds
- D. ENIID
Answer: A,B,C
Explanation:
Explanation
Specifies whether to allow functions to access VPC resources.
* On: Functions can access VPC resources.
If you turn on the switch, you must set the following parameters:
* VPC: Select a VPC.
* Vswitches: Select one or more vSwitches.
* Security Group: Select the security group with which your ENI is associated.
* Off: Functions cannot access VPC resources.
https://www.alibabacloud.com/help/doc-detail/72959.htm
NEW QUESTION 66
Which of the following errors may occur when you access an image stored in Object Storage Service, and attach an image processing URL parameter to the URL ? (Number of correct answers: 3)
- A. NoSuchStyle
- B. NoSuchBucket
- C. NoSuchKey
- D. NoSuchFile
- E. NoSuchObject
Answer: B,C,D
NEW QUESTION 67
......
Valid Way To Pass Alibaba Cloud's ACA-Developer Exam with : https://www.vceprep.com/ACA-Developer-latest-vce-prep.html