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NEW QUESTION 19
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 20
With ApsaraDB for MyBase, problems caused by a sudden spike in traffic are automatically resolved. How is this done?
- A. ApsaraDB for MyBase grants you host permissions. You can log on to hosts to troubleshoot business problems in an emergency.
- B. ApsaraDB for MyBase allows you to specify a host when you create an instance.
- C. ApsaraDB for My Base allows you to deploy different types of instances in a cluster.
- D. ApsaraDB for MyBase supports elastic upgrade policies. If the resource utilization of a database exceeds the preset threshold during a business peak, ApsaraDB for MyBase can automatically upgrade database resource specifications to respond to the business peak.
- E. ApsaraDB for MyBase supports the over commitment of CPU and disk resources.
Answer: E
NEW QUESTION 21
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 22
Which of the following is the most efficient backup in ApsaraDB for MongoDB?
- A. Logical backup
- B. Physical backup
- C. Full backup
- D. Snapshot backup
Answer: B
NEW QUESTION 23
Which database utility is used for data migration and synchronization?
- A. DMS
- B. DBS
- C. DTS
- D. DAS
- E. ADAM
Answer: C
Explanation:
Explanation
Data Transmission Service is charged based according to three models: Data Synchronization, Data Migration, Change Tracking. https://www.alibabacloud.com/product/data-transmission-service/pricing
NEW QUESTION 24
You can purchase more read-only nodes after you have created a cluster. If the primary node fails, the system automatically promotes the read-only node with the highest failover priority to become the new primary node while restoring the faulty node.
- A. True
- B. False
Answer: A
Explanation:
Explanation
Each node in a PolarDB cluster has a failover priority. The system performs the following steps to automatically elect a primary node:
Find all the read-only nodes that can be elected as the primary node.
Select one or more read-only nodes that have the highest failover priority.
If the failover to the first node fails due to reasons, such as network issues and abnormal replication status, the system tries to switch to another node until the failover succeeds.
https://www.alibabacloud.com/help/doc-detail/141229.htm?spm=a2c63.p38356.b99.113.36df231dK2DVX0
NEW QUESTION 25
Which of the following architectures is not supported by ApsaraDB RDS for MySQL?
- A. The serverless architecture, in which computing resources are charged based on the Pay-As-You-Go (PAYG) billing method
- B. The high-avail ability architecture, in which primary and read-only nodes are deployed to implement automatic failovers
- C. The single-node Basic Edition architecture, which can be used in test and non-core production environments
- D. The three-node Enterprise Edition architecture, which ensures zero data loss
Answer: A
NEW QUESTION 26
Alibaba Cloud DTS (Data Transmission Service) supports both full database migration and incremental synchronization.
- A. True
- B. False
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/176633.htm?spm=a2c63.p38356.b99.32.3e751a4dtHm9cr /
https://www.alibabacloud.com/help/doc-detail/56776.htm?spm=a2c63.p38356.b99.181.74896b5dro6cDo
NEW QUESTION 27
Your client is having trouble connecting DTS to their source database in their local datacenter, why might this be?
- A. Their database isn't on Alibaba Cloud already so it cannot be accessed by DTS
- B. Their database is an inverted column store, which is not supported
- C. Their database is not accessible from the Internet, so DTS cannot access it
- D. Their database must not include the special DTS compatibility mode
Answer: C
NEW QUESTION 28
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 29
Which of the following statements about Data Transmission Service (DTS) migration scenarios is NOT true?
- A. DTS can migrate data from several source databases to one destination database, for example, A > C and B > C.
- B. DTS can migrate data in a circular way, for example, A > B > C > A.
- C. DTS can migrate data from one source database to one destination database, for example, A > B.
- D. DTS can migrate data from one source database to several destination databases, for example, A > B and A > C.
Answer: B
NEW QUESTION 30
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 31
What does DIM mean in data warehouse terms?
- A. Application data service (ADS)
- B. Dimension table
- C. Operational data store (ODS)
- D. Common data model (CDM)
Answer: B
NEW QUESTION 32
Which of the following is NOT supported by schema migration in Advanced Database & Application Migration (ADAM)?
- A. Re-migrate the failed schemas
- B. Customize schema migration
- C. Migrate the schemas that require a manual revision but have not been revised
- D. Re-migrate all schemas
Answer: C
NEW QUESTION 33
Which of these are NOT good use cases for DTS (Data Transmission Service)? (Number of correct answers: 2)
- A. Undoing changes made to a database by mistake
- B. Saving database logs
- C. Full database synchronization for database migration
- D. Incremental synchronization for disaster recovery
Answer: A,B
NEW QUESTION 34
Which of the following is NOT true, regarding the sensitive data management feature provided by Data Management (DMS)?
- A. After you configure de-identification algorithms, you can view the de-identified data.
- B. The rules of field metadata and data content can be automatically recognized.
- C. Field-level and row-level permissions are supported.
- D. De-identification algorithms can be managed. Multiple algorithms are supported, such as algorithms for masking specific positions and replacing fixed characters.
Answer: A
NEW QUESTION 35
If a database exception occurs in a PolarDB cluster because important data is deleted by mistake, how i can data be restored?
- A. Level-2 backup
- B. Level 1 backup + Redo log
- C. Level-1 backup
- D. Level-2 backup + Redo log
Answer: D
NEW QUESTION 36
Which of the following are relational databases? (Number of correct answers: 5)
- A. PostgreSQL
- B. TSDB
- C. MariaDB
- D. SQL Server
- E. Oracle
- F. MySQL
- G. Redis
- H. HBase
- I. MongoDB
Answer: A,C,D,E,F
NEW QUESTION 37
Alibaba Cloud DTS (Data Transmission Service) is a file migration tool.
- A. False
- B. True
Answer: A
Explanation:
Explanation
DTS is a data migration, integration, synchronization and change tracking tool.
https://www.alibabacloud.com/help/doc-detail/176063.htm?spm=a2c63.l28256.b99.6.490d7142CiFvPb
NEW QUESTION 38
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 39
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 40
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