Alibaba Cloud - ACA Database Certification Exam Question

Alibaba Cloud - ACA Database Certification Exam Question
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Answers:
1.B.The agent must be deployed on the same machine as the application
2.B.Elastic search
3.B.You must create differnt database accounts for each Alibaba Cloud account.
4.A.Re-migrate all schemas
5.D.Online inventory deduction management that features high concurrency and low latency.
6.B.AnalyticDB for MySQL can be used to build enterprise-grade data warehouse projects.
7.B.ESSD
8.A.In Flexible Management mode, you must log on to the database by using the database account and password, and all operations are not controlled.
9.A.You must stop the source database before migration to ensure data consistency between the source and destination databases.
10.C.Isolated hosts are used. A host runs only your instances and does not run instances of other users.
11.D.100 TB
12.D.99.99%
13.A.ApsaraDB for MyBase is an update version of ApsaraDB RDS. You can select ApsaraDB for MyBase from RDS Dedicated Cluster for purchase.
14.A.Dimension table
15.D.Change the names of databases, tables, and columns to be migrated.
16.D.Elastic Mode
17.C.Persistent memory optimized instances of Tair
18.C.Difficult data verification
19.B.16 primary (read/write) nodes
20.C.SAN
21.D.Performance monitoring
22.D.6
23.B.Level-1 backup + Redo log
24.D.Array
25.B.Multi threading
26.D.Automated management, which enables ApsaraDB RDS for MySQL to automatically add and delete indexes
27.A.RDS MySQL
28.C.Snapshot backup
29.A.MongoDB is a relational database.
30.D.The serverless architecture, in which computing resources are charged based on the Pay-As-You-Go(PAYG) billing method.
31.B.Full backup only
32.C.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 golbal regions.
33.B.B-tree
34.A.With recursive
35.D.High-availability Edition Dedicated instance family
36.
-A.The data migration feature applies to one-off migration, such as migrating data to Alibaba Cloud from another cloud. The data migration feature supports only Pay-As-You-Go, rather than Subscription.
-E.Schema migration and full data migration are free of charge. You are charged only if you select incremental data migration. You must select incremental data synchronization if you use the data synchronization feature.
37.
A.Hive
B.Presto
38.
A.A database has a maximum of three data owners.
C.A table has a maximum of three data owners.
39.
-B.You cannot log on to the hosts of ApsaraDB RDS databases because ApsaraDB RDS is a black box. ApsaraDB for MyBase allows you to log on the hosts and privileged accounts of databases.
-E.ApsaraDB RDS databases exclusively occupy hosts.
40.
B.DataWorks
D.QuickBI
41.
A.Complex extract, transform, load (ETL)
B.Interactive analysis
C.Simple point query
E.Machine learning
42.
B.Real-time synchronization
C.High mount speeds (a few seconds)
D.Online query and analysis.
43.
A.Read/write splitting
B.Load balancing
C.Health checks for nodes
D.Failover strategies for high availability
44.
A.Simplicity ofr queries
C.Easier for data visualization
D.Stabilization of information: present a consistent, unchanged image of the database structure.
45.
A.Data tranmission Service(DTS)
B.Database backup
C.Data Lake Analytics (DLA)
46.
A.IP whitelist
B.Secure Sockets Layer (SSL) encryption
C.SQL audit
47.
A.Data backup
B.Log backup
C.Backup for disaster recovery
D.Backup based on disk snapshots.
E.Database and table backup
48.
A.Standalone instancce
B.Primary/secondary instance that consists of two nodes
D.Sharded cluster instance
49.
A.Scenarios such as location-oriented dating, food ordering, ride hailing, and searched for shared bicycles.
B.Path planning in navigation
E.Trajectory storage and trajectory collision detection
F.Accelerated index-based queries in time series data
G.Polygon-based location selection.
50.
A.TairDoc
B.TairBloom
C.TairHash
E.TairCache

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did u pass the exam?