Alibaba ACA-Developer Exam Questions Instant Access

Question 1

Which of the following OSS tools are GUI-based? (Number of correct answers:2)

AWeb Console

Bossf s

Cossbrowser

Dossutil

Answer : B, D

Question 2

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?

AImplement ApsaraDB for Redis in Cluster Mode

BInstall Redis on an ECS instance

CImplement ApsaraDB for Redis in Standard Mode

DMigrate the ROS database to HBase to save the cache layer

Answer : D

Question 3

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?

AManually delete them one by one

BConfigure a life cycle rule that matches the entire bucket, and delete all files after one day

CCall the API from a script, deleting files in batches

DDirectly delete the bucket

Answer : A

Question 4

Which of the following options describes the basic concepts of Alibaba Cloud Tracing Analysis correctly? (Number of correct answers: 3)

AAlibaba Cloud Tracing Analysis model relies on OpenTracing

BIn the OpenTracing standard, a call chain can be regarded as a directed acyclic graph (DAG) composed of multiple Spans. The relationship between spans is named References

CIn the OpenTracing standard, each Span represents a named and timed non-continuous execution segment in the call chain

DIn some cases, timing diagrams based on the timeline are used to show the call chain

Answer : A, B, C

Question 5

To meet data analytics requirements on large datasets, which of these databases can meet the demand for structured and semi-structured storage for almost all types of data, albeit with limited support for strong transactions?

AHBase

BOceanBase

CRDSMariaDB

DTSDB

Answer : C

Question 6

You can create an event notification rule in Message Service and push notifications to the specified consumer in the form of messages, to receive events from specified Alibaba Cloud resources. Which of the following options are correct statements about the Message Service (MS) service? (Number of correct answers: 2)

AEvent Notifications can cross regions.

BMessage Service provides synchronous notifications to ensure the consistency between the message acknowledgment and event processing.

CThe event notification message is retained within the valid time. When you fail to receive an event message, the event notification message is retried based on the specified retry policy.

DThe consumer type of the event notification message can be HTTP Server, Queue, or Topic.

Answer : B, C

Question 7

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?

AThere is significant network delay

BThe write throughput of a single partition is limited, and the 10 MB/s write traffic exceeds

CThere is not enough space in the Logstore partition

DThe target partition in the Logstore is not specified

Answer : D

Alibaba ACA Developer ACA-Developer Exam Questions