Steps Necessary To Pass The ACA-Database Exam from Training Expert ExamsTorrent
Valid Way To Pass Alibaba Database's ACA-Database Exam
Alibaba Cloud ACA-Database Exam Syllabus Topics:
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NEW QUESTION 14
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. Full backup and incremental backup
- B. Logical migration tools
- C. Incremental backup only
- D. Full backup only
Answer: B
NEW QUESTION 15
Which of the following statements is NOT correct about the benefits you can gain through PolarDB?
- A. locked backup
- B. Large storage space
- C. Elastic scaling within minutes
- D. Millisecond-level latency in physical replication
- E. When you add a read-only node in an ApsaraDB for PolarDB cluster, you only need to pay for computing resources
Answer: A
Explanation:
Explanation
Lock-free backup.
https://www.alibabacloud.com/help/doc-detail/58768.htm?spm=a2c63.p38356.b99.10.1bcb7338k86bX5
NEW QUESTION 16
Which of the following is the core benefit of ApsaraDB for Redis Enhanced Edition (Tair)?
- A. Makes large amounts of data easier to process.
- B. Makes it easy to do business anywhere.
- C. Makes data secure and independently managed.
- D. Makes data accessible online and in real time.
Answer: D
NEW QUESTION 17
When high availability switchovers occur in a database, which of the following features provided by ApsaraDB RDS for PostgreSQL can prevent the incremental data loss of logical subscriptions?
- A. High concurrency optimization
- B. Pase
- C. Point-in-time restore
- D. Ganos
- E. Slot failover
Answer: C
NEW QUESTION 18
Which of the following is NOT true, regarding DTS (Database Transmission Service)?
- A. DTS supports multiple database engines
- B. DTS cannot be used for incremental database synchronization
- C. DTS works for database both on and off Alibaba Cloud
- D. DTS can migrate both data and table schema
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/56776.htm?spm=a2c63.p38356.b99.181.74896b5dro6cDo
NEW QUESTION 19
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_basebackup
- C. pg_restore
- D. pg_upgrade D.DTS
Answer: B
NEW QUESTION 20
Which of the following scheduling tools are supported by AnalyticDB for MySQL? (Number of correct answers: 2)
- A. QuickBl
- B. DMS
- C. Data Works
- D. MaxCompute
Answer: B,C
NEW QUESTION 21
Which of the following is not a component of the PolarDB-0 architecture in Apsara Stack?
- A. RDMA
- B. FC Switch
- C. Proxy
- D. SAN
Answer: D
NEW QUESTION 22
Which of the following statements about Alibaba Cloud ApsaraDB for MongoDB is true?
- A. DataWorks is not supported for MongoDB data processing.
- B. Alibaba Cloud and MongoDB have a strategic partnership, so Alibaba Cloud Is able to provide the latest MongoDB features in our ApsaraDB for MongoDB product, in all our global regions.
- C. It takes a longer time to perform operations and maintenance (O&M) on ApsaraDB for MongoDB instances than on self-installed and self-managed MongoDB.
Answer: B
NEW QUESTION 23
Your client is having trouble connecting DTS to their source database in their local datacenter, why might this be?
- A. Their database must not include the special DTS compatibility mode
- B. Their database isn't on Alibaba Cloud already so it cannot be accessed by DTS
- C. Their database is not accessible from the Internet, so DTS cannot access it
- D. Their database is an inverted column store, which is not supported
Answer: C
NEW QUESTION 24
PolarDB for MySQL allows you to deploy a cluster across multiple zones. Compared with single-zone clusters, multi-zone clusters have better disaster recovery capabilities and can withstand data centre-level faults.
- A. False
- B. True
Answer: B
NEW QUESTION 25
Which of the following are relational databases? (Number of correct answers: 5)
- A. MariaDB
- B. SQL Server
- C. HBase
- D. PostgreSQL
- E. Oracle
- F. TSDB
- G. MySQL
- H. Redis
- I. MongoDB
Answer: A,B,D,E,G
NEW QUESTION 26
Which of the following deployment architectures are supported by Alibaba Cloud ApsaraDB for MongoDB?
(Number of correct answers: 3)
- A. Sharded cluster instance
- B. Replica set instance that consists of three nodes
- C. Standalone instance
- D. Replica set instance that consists of six nodes
- E. Primary/secondary instance that consists of two nodes
Answer: A,B,C
NEW QUESTION 27
Which of the following statements about the compatibility of AnalyticDB for PostgreSQL is NOT true?
- A. Support for the Java Database Connectivity (JDBC) protocol
- B. Support for the SQL2003 syntax standard
- C. Fully compatible with Oracle syntax
- D. Compliance with PostgreSQL and Greenplum protocols
Answer: C
NEW QUESTION 28
What is the maximum storage size that PolarDB currently provides?
- A. 10TB
- B. 50TB
- C. 100TB
- D. 1TB
Answer: C
Explanation:
Explanation
Each PolarDB cluster supports to scale up to 100 TB. https://www.alibabacloud.com/product/polardb
NEW QUESTION 29
Which of the followings is NOT a correct way to connect to PolarDB?
- A. Use a client like HeidiSQL to connect to a cluster
- B. Use PolarDB console to log into a cluster
- C. Use the command line like 'mysql' to connect to a cluster
- D. Use DMS to connect to a cluster
Answer: B
Explanation:
Explanation
Use the PolarDB console to log on to Database.
https://www.alibabacloud.com/help/doc-detail/68511.htm?spm=a2c63.p38356.879954.7.7c2855b1aLLHjb#task-
NEW QUESTION 30
Which of the following are reasonable Data Transmission Service (DTS) use cases? (Number of correct answers: 4)
- A. Synchronizing data to data warehouses in real time to build data warehouses for real-time analytics.
- B. Change tracking and data distribution.
- C. Synchronizing information about user accounts and permissions.
- D. Configuring data audit rules to manage data quality.
- E. Geo-disaster recovery and active geo-redundancy for databases
- F. Database migration without interrupting services / downtime
Answer: B,E,F
NEW QUESTION 31
How can ApsaraDB for MyBase solve problems in database security and performance interferences in the multi-tenant scenario?
- A. ApsaraDB for MyBase supports resource over commitment.
- B. Instances can be migrated. You can manually migrate instances to idle hosts.
- C. Isolated hosts are used. A host runs only your instances and does not run instances of other users.
- D. ApsaraDB for MyBase allows you to distribute different types of instances at a time.
Answer: C
NEW QUESTION 32
Which of the following specifications of AnalyticDB supports tiered storage of cold and hot data?
- A. C series
- B. S series
- C. Elastic Mode
- D. Basic Edition
Answer: C
NEW QUESTION 33
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. Re-migrate all schemas
- D. Migrate the schemas that require a manual revision but have not been revised
Answer: D
NEW QUESTION 34
Which of the following computing capabilities are supported by AnalyticDB? (Number of correct answers: 4)
- A. Real-time update
- B. Interactive analysis
- C. Complex extract, transform, load (ETL)
- D. Machine Learning
- E. Simple point query
Answer: A,B,C,D
NEW QUESTION 35
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