[Nov 19, 2021] ACA-Developer Exam Dumps - Alibaba Cloud Practice Test Questions
New Real ACA-Developer Exam Dumps Questions
Alibaba Cloud ACA-Developer Exam Syllabus Topics:
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NEW QUESTION 52
A developer have written a web application using a microservice architecture, in such a architecture, the client (web browser or mobile application) first initiates a request. The request first reaches the load balancer, then goes through an authentication service, a billing service, then requests a resource, and finally a result is returned. How many spans does such a call chain consist of?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 53
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 54
In Alibaba Cloud RocketMQ, messages are kept for up to _____ days. We recommend configuring a monitoring service to watch the consumption status, and intervene manually when ''not consumed but to be deleted'' message alarms occur.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 55
Which of the following detection protocol is NOT supported by CloudMonitor's Site Monitoring feature?
- A. DNS
- B. SNMP
- C. TCP/UDP
- D. HTTP(S)
Answer: B
NEW QUESTION 56
Which of these are suitable use cases for Alibaba Cloud's ApsaraDB for Redis service? (Number of correct answers: 3)
- A. Online gaming user rankings (scoreboard)
- B. E-Commerce sales & promotions
- C. Enterprise OA system
- D. Live video chat system
Answer: A,C,D
NEW QUESTION 57
You have an application with the following requirements:
7. There will be a lot of video content that need to be uploaded.
2. Each uploaded video needs to be preprocessed to provide different video resolutions and quality levels to accommodate different devices and network conditions.
3. It should be possible to process video in parallel at scale, to ensure that videos are preprocessed in a reasonable amount of time.
Which of the following Alibaba Cloud applications can be combined to provide a low operation and maintenance burden and relatively low operating costs? (Number of correct answers: 3)
- A. Elastic Compute Service (ECS)
- B. Server Load Balancer (SLB)
- C. Function Compute
- D. Log Service
- E. Serverless Workflow
Answer: A,D,E
NEW QUESTION 58
Function Compute supports one-way triggers and two-way triggers. Which of the following triggers is a one-way trigger? That is to say you only need to configure the trigger in the event source, not in Function Compute?.
- A. SLS trigger(s)
- B. MNS topic trigger(s)
- C. CloudMonitor trigger(s)
- D. OSS event trigger(s)
Answer: C
NEW QUESTION 59
Which of the following programming languages are supported by the Alibaba Cloud SDK? (Number of correct answers: 3)
- A. PHP
- B. Bash shell
- C. Swift
- D. Java
- E. Python
Answer: A,D,E
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/74712.htm
NEW QUESTION 60
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 61
Which of the following is NOT required for SMC (Server Migration Center) to migrate a server to Alibaba Cloud?
- A. From the SMC console, configure the type of disk image to be generated during the migration.
- B. The SMC client transfers the source data to an intermediate ECS instance.
- C. Import the migration source information to the SMC console.
- D. The SMC backend service generates a target Alibaba Cloud image based on the migration source.
Answer: C
NEW QUESTION 62
When using the Alibaba Cloud CLI, what is the default data format for responses, when executing queries such as "aliyun ecs Describelnstances"?
- A. YAML
- B. XML
- C. TABLE
- D. JSON
Answer: D
NEW QUESTION 63
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 64
You want to deploy a LAMP development environment in Alibaba Cloud's Singapore region, and you want to simultaneously bind a domain name and configure HTTPS. Which of these services can help you accomplish this quickly and easily?
- A. Alibaba Cloud Container Service for Kubernetes (ACK)
- B. Elastic Compute Service (ECS)
- C. Simple Application Server (SAS)
- D. Elastic Container Instance (ECI)
Answer: C
NEW QUESTION 65
A mobile application developer intends to use Alibaba Cloud Object Storage Service (OSS) to store the end user data for their app, and to ensure data isolation between each user of the app, to prevent one user from obtaining another's data. Which method can be done to meet these requirements?
- A. RAM Policy
- B. Object Policy
- C. Bucket Policy
- D. STS authorization
Answer: D
NEW QUESTION 66
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. Two types of Cloud Disks can be attached to an ECS: System Disks and Data Disks. System Disks host the ECS instances operating system.
- C. 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.
- D. 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).
Answer: A,C,D
NEW QUESTION 67
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. The "Topic" data field is empty
- B. The log size written to log group is less than 5MB
- C. The target partition in the Logstore is not specified
- D. Insufficient space in the Logstore partition
Answer: D
NEW QUESTION 68
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. Snapshots can be created manually through the web console or command line tools, or automatically according to a schedule.
- B. Snapshot rollbacks can be performed while the ECS instance is running.
- C. 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.
- D. In the event of a system failure, you can use a snapshot to roll back the Cloud Disk to an earlier point in time.
Answer: C
NEW QUESTION 69
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