Latest [Oct 16, 2021] Alibaba Cloud ACA-Database Exam Practice Test To Gain Brilliante Result
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NEW QUESTION 37
Which of the following are the advantages of cloud databases over self-managed databases? (Number of correct answers: 3)
- A. Integrated operations and maintenance (O&M), as well as easier management
- B. High availability and comprehensive backup and monitoring capabilities
- C. Stronger service level agreement (SLA)
- D. High costs
Answer: A,B,C
NEW QUESTION 38
If you have a development team with several developers working on cloud databases, which product is recommended to use for development collaboration?
- A. DTS
- B. DBS
- C. DG
- D. DMS
- E. DAS
Answer: D
Explanation:
Explanation
A series of step-based solutions for R&D processes, data security, and data development are provided in the Data Management (DMS) console to get you started with DMS.
https://www.alibabacloud.com/help/doc-detail/190124.htm?spm=a2c63.p38356.b99.40.6ad93d19Xe9h14
NEW QUESTION 39
Which of the following tools can be used to migrate an on-premises database to Alibaba Cloud while causing minimal service downtime?
- A. pg_dump
- B. pg_restore
- C. pg_basebackup
- D. pg_upgrade D.DTS
Answer: C
NEW QUESTION 40
Which database utility is good for database management and DevOps?
- A. DTS
- B. DBS
- C. DMS
- D. DAS
- E. ADAM
Answer: C
Explanation:
Explanation
Database DevOps Solutions. https://www.alibabacloud.com/product/data-management-service /
https://www.alibabacloud.com/help/doc-detail/190124.htm?spm=a2c63.p38356.b99.40.6ad93d19Xe9h14
NEW QUESTION 41
Which of the following computing capabilities are supported by AnalyticDB? (Number of correct answers: 4)
- A. Simple point query
- B. Interactive analysis
- C. Complex extract, transform, load (ETL)
- D. Real-time update
- E. Machine Learning
Answer: B,C,D,E
NEW QUESTION 42
You need to migrate a database that has a storage capacity of 50 GB to the cloud and can tolerate a service downtime of half an hour. In this case, which of the following migration methods is the optimal choice to migrate data to the cloud in terms of stability and availability?
- A. Logical migration tools
- B. Incremental backup only
- C. Full backup and incremental backup
- D. Full backup only
Answer: A
NEW QUESTION 43
lf Oracle databases need to be migrated to Alibaba Cloud, which of the following product solutions :an be recommended? (Number of correct answers: 3)
- A. Use Advanced Database & Application Migration (ADAM) to evaluate the migration project.
- B. Use Data Transmission Service (DTS) to migrate data.
- C. Use PolarDB-0 that is highly compatible with Oracle.
- D. Use ApsaraDB for Redis as a cache service to provide acceleration capabilities.
Answer: A,B,C
NEW QUESTION 44
Which of the following statements about Data Management (DMS) permissions management is NOT true?
- A. You cannot directly submit changes even if you have permissions to make changes.
- B. You must create different database accounts for each Alibaba Cloud account.
- C. The permissions of the accounts of resigned or transferred personnel can be automatically managed by using OpenAPI.
- D. You can assign different resources and operation permissions to an Alibaba Cloud account as needed.
Answer: A
NEW QUESTION 45
Which of the following types of data that is stored in PostgreSQL databases can support the one-to-many data model? (Number of correct answers: 3)
- A. Cube
- B. String
- C. Range
- D. Array
- E. JSONB
- F. JSON
- G. GIS
Answer: B,D,F
NEW QUESTION 46
Which of the following statements is NOT correct about the benefits you can gain through PolarDB?
- A. locked backup
- B. When you add a read-only node in an ApsaraDB for PolarDB cluster, you only need to pay for computing resources
- C. Millisecond-level latency in physical replication
- D. Elastic scaling within minutes
- E. Large storage space
Answer: A
Explanation:
Explanation
Lock-free backup.
https://www.alibabacloud.com/help/doc-detail/58768.htm?spm=a2c63.p38356.b99.10.1bcb7338k86bX5
NEW QUESTION 47
Each PolarDB cluster consists of one primary node and one or more read-only nodes. The system only support manually switch over services from the primary node to a read-only node.
- A. False
- B. True
Answer: A
Explanation:
Explanation
PolarDB cluster supports Manually and Automatically switch over services between primary and read-only nodes.
https://www.alibabacloud.com/help/doc-detail/141229.htm?spm=a2c63.p38356.b99.113.36df231dK2DVX0
NEW QUESTION 48
Which of the following deployment architectures are supported by Alibaba Cloud ApsaraDB for MongoDB?
(Number of correct answers: 3)
- A. Replica set instance that consists of six nodes
- B. Replica set instance that consists of three nodes
- C. Primary/secondary instance that consists of two nodes
- D. Standalone instance
- E. Sharded cluster instance
Answer: B,D,E
NEW QUESTION 49
How can ApsaraDB for MyBase solve problems in database security and performance interferences in the multi-tenant scenario?
- A. Isolated hosts are used. A host runs only your instances and does not run instances of other users.
- B. Instances can be migrated. You can manually migrate instances to idle hosts.
- C. ApsaraDB for MyBase supports resource over commitment.
- D. ApsaraDB for MyBase allows you to distribute different types of instances at a time.
Answer: A
NEW QUESTION 50
Which of the following are the benefits of database views? (Number of correct answers: 3)
- A. Easier for data visualization
- B. Simplicity for queries
- C. Simplicity in structure: presents the database as a set of virtual tables specific to particular users or groups of users
- D. Stabilization of information: presents a consistent, unchanged image of the database structure
Answer: B,C,D
NEW QUESTION 51
Which of the following architectures are supported by ApsaraDB for Redis Enhanced Edition (Tair)? (Number of correct answers: 3)
- A. Single-node architecture
- B. Cluster master-replica instances
- C. Read/write splitting architecture in which standard master-replica instances are deployed
- D. Master-replica architecture in which standard master-replica instances are deployed
Answer: B,C,D
NEW QUESTION 52
Which of the following databases are supported by DTS (Database Transmission Service)? (Number of correct answers: 3)
- A. SQL Server
- B. DB2
- C. PostreSQL
- D. MySQL
Answer: A,C,D
Explanation:
Explanation
DB2 is supported, but very limited.
https://www.alibabacloud.com/help/doc-detail/176064.htm?spm=a2c63.l28256.b99.7.13c27142yYyvXz
NEW QUESTION 53
Which of the following statements about the compatibility of AnalyticDB for PostgreSQL is NOT true?
- A. Fully compatible with Oracle syntax
- B. Compliance with PostgreSQL and Greenplum protocols
- C. Support for the Java Database Connectivity (JDBC) protocol
- D. Support for the SQL2003 syntax standard
Answer: A
NEW QUESTION 54
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