Alibaba ACA-Developer Exam Practice Test Instant Access

Question 1

When using the Alibaba Cloud CLI, what is the default data format for responses, when executing queries such as "aliyun ecs Describelnstances"?

AJSON

BYAML

CXML

DTABLE

Answer : A

Question 2

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?

AA 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.

BSnapshots can be created manually through the web console or command line tools, or automatically according to a schedule.

CIn the event of a system failure, you can use a snapshot to roll back the Cloud Disk to an earlier point in time.

DSnapshot rollbacks can be performed while the ECS instance is running.

Answer : A

Question 3

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?

AThe HTTPS protocol is not enabled

BUser key master key is in Disabled state

CThe user key master key is in PendingDeletion state

DThe user key master key is in Pendinglmport state

Answer : C

Question 4

What are the advantages of using Elastic Container Instance (ECI) to deploy applications compared with using ECS? (Number of correct answers; 2)

ALow maintenance, low costs

BStartup in seconds without the need to reserve resources

CLess significant visualization layer performance losses

DStronger isolation between instances

Answer : A, B

Question 5

For business scenarios with strong data reliability requirements or financial business scenarios with regulatory requirements related to data durability and availability, RDS MySQL provides a remote backup mechanism to improve reliability. Which of the following is correct, regarding RDS's remote disaster recovery capabilities? (Number of correct answers: 3)

AThe primary database (the one to be backed up) must have an Alibaba Cloud Intranet address

BRDS realizes real-time synchronization between the master instance and the remote disaster recovery instance through Data Transmission Service (DTS)

CWhen an outage occurs in the area where the primary instance is located, and neither the primary instance (Master) nor the standby instance (Slave) can be connected to, the remote disaster recovery instance can be switched to the primary instance

DWhen the database deletion operation is performed on the master instance, the operation will also be synchronized to the disaster recovery instance

Answer : D

Question 6

Which of the following is NOT required for SMC (Server Migration Center) to migrate a server to Alibaba Cloud?

AImport the migration source information to the SMC console.

BFrom the SMC console, configure the type of disk image to be generated during the migration.

CThe SMC client transfers the source data to an intermediate ECS instance.

DThe SMC backend service generates a target Alibaba Cloud image based on the migration source.

Answer : A

Question 7

Which of these are suitable use cases for Alibaba Cloud's MongoDB service? (Number of correct answers: 3)

AApplications requiring high OPS, such as logging apps

BScenarios where complex transaction support is required

CApplications where JSON is a good choice of storage format

DApplications requiring geo-location queries, such as logistics or order status apps

Answer : A, B, D

Alibaba ACA Developer ACA-Developer Exam Practice Test