ACA-Developer by Alibaba Cloud Actual Free Exam Questions And Answers

Question 1

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. 6

B. 4

C. 5

D. 3

Discussion 0

Correct Answer: D Vote an answer

Question 2

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. Spanld can locate the position of a request in the system call, and who its upstream and downstream dependencies are respectively.

B. 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.

C. 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.

D. When the user's request enters the system, a globally unique traceld will be generated on the first layer of the calling network.

Discussion 0

Correct Answer: A,B,D Vote an answer

Question 3

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. OSS event trigger(s)

D. CloudMonitor trigger(s)

Discussion 0

Correct Answer: D Vote an answer

Question 4

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. Bucket Policy

B. Object Policy

C. STS authorization

D. RAM Policy

Discussion 0

Correct Answer: C Vote an answer

Question 5

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)

Discussion 0

Correct Answer: A,B,C,E Vote an answer

Question 6

Which of the following statements describes AKs (Access Keys) incorrectly?

A. An AccessKey ID and AccessKey Secret cannot be used separately

B. AccessKey Secrets for RAM sub-accounts can be queried at any time on the Console Interface after creation

C. You can use AK to construct an API request and the corresponding resources can be manipulated if your request successfully..

D. AK can refer to both the AccessKey ID and the AccessKey secret

Discussion 0

Correct Answer: D Vote an answer

Question 7

The event monitoring feature in CIoudMonitor provides custom event monitoring functions. Which of the following data reporting methods are included? (Number of correct answers: 3)

A. Report event monitoring data via HTTP

B. Report event monitoring through the Java SDK

C. Report event monitoring data through the command line (CU)

D. Report event monitoring through the Python SDK

Discussion 0

Correct Answer: A,B,D Vote an answer

Question 8

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. A STS request consists of an access address, communication protocol, request method, request parameters and character encoding

C. 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

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

Discussion 0

Correct Answer: A,B,C Vote an answer

Question 9

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

Discussion 0

Correct Answer: A,C,D Vote an answer

Question 10

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 serverless site using Function Compute

C. Quickly build a personal, learning, or test environment

D. Quickly build a small e-commerce website

E. Quickly build a personal blog website

Discussion 0

Correct Answer: B,C,E Vote an answer

Alibaba Cloud ACA Developer Certification - ACA-Developer Exam Practice Test

Contact Us

Useful Links

Latest Updated