Alibaba CEA-C01 Certification Exam Sample Questions

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Alibaba CEA-C01 Sample Questions:

01. A company is choosing a database for a new MySQL application with a multi-terabyte dataset. It must be able to add read capacity as demand grows without paying to store another full copy of the data each time.
Which of the following best meets the requirement?
a) ApsaraDB RDS for MySQL, adding read-only instances that replicate from the primary
b) PolarDB for MySQL, adding read-only nodes that share one copy of data on distributed storage
c) ApsaraDB RDS for MySQL High-availability Edition, reading from its secondary
d) A Tair cluster instance that holds the dataset in shards
 
02. A company manages its accounts with Resource Directory. The security team requires that no member account can delete ActionTrail trails. Developers in member account X must be able to use ECS.
Which two statements are correct?
(Choose two.)
a) An access control policy that allows ECS, attached to account X, gives the developers access
b) The developers still need ECS permissions granted through RAM in account X
c) The management account is also restricted by the folder's access control policy
d) An access control policy can set a boundary that blocks member accounts from deleting trails
 
03. A company runs its order database on ApsaraDB RDS and is evaluating the Data Subscription (change tracking) feature of Data Transmission Service (DTS).
Which two needs does DTS Data Subscription meet?
(Choose two.)
a) Move a database to RDS once and then retire the source database
b) Refresh a cache whenever rows change in the source database
c) Pass INSERT, UPDATE and DELETE changes to downstream apps asynchronously
d) Record API calls made from the console, OpenAPI and developer tools
 
04. A large team needs customizable approval workflows before data changes run on its production database in Data Management (DMS). A separate test database needs no ticket approval at all.
Which two statements about DMS control modes are correct?
(Choose two.)
a) Flexible Management is free, and its tickets do not require approval
b) A control mode is assigned to each RAM user rather than to a database instance
c) Flexible Management includes lock-free changes and SQL review
d) Security Collaboration adds the DevOps feature for customizable approval workflows
e) Stable Change provides the customizable approval workflows the team needs
 
05. A read-heavy application uses Tair (Redis OSS-compatible) as its cache. A small number of hot keys receive so many reads that the master node is overloaded.
Which of the following should the team choose?
a) ApsaraDB RDS read-only instances for the cache
b) Standard master-replica architecture
c) Read/write splitting architecture
d) Cluster architecture with more shards added
 
06. An administrator is cleaning up idle resources spread across several products and regions.
Which two statements about Resource Center are correct?
(Choose two.)
a) It searches resources across products and regions and links to each resource's console
b) It cannot release resources, so they must be released in each service's own console
c) It shows only the resources that are in the region currently selected in the console
d) It has a bulk delete action, so idle resources across products can be released in one step
 
07. An application on ApsaraDB RDS for MySQL must spread its reads across several read-only instances without code changes, and it must not receive connection errors when the instance switches over. The team plans to use the RDS database proxy.
Which two statements about the database proxy are correct?
(Choose two.)
a) Its persistent connections keep application connections alive during instance switchovers
b) The proxy endpoint is a CLB listener that balances connections across the database instances
c) The application must still connect to each read-only instance's own endpoint to send reads
d) Through one proxy endpoint, it forwards writes to the primary and reads to the read-only instances
 
08. An auditor requires that the data files of an ApsaraDB RDS for MySQL instance be unreadable to anyone who obtains the underlying storage media. The application must keep working without code changes.
Which of the following meets the requirement?
a) Limit the IP address whitelist to the application's vSwitch CIDR block
b) Release the public endpoint and connect through the internal endpoint
c) Enable Transparent Data Encryption (TDE) with a key from Key Management Service (KMS)
d) Enable Secure Sockets Layer (SSL) encryption on the public endpoint
 
09. An engineer plans to upgrade the specifications of an ApsaraDB RDS for MySQL instance during business hours.
Which of the following should the team expect?
a) The order can be withdrawn at any point until the change completes, if traffic rises
b) A switchover causes a brief disconnection, and the submitted order cannot be cancelled
c) On cloud-disk instances, the change takes hours, growing with the amount of data stored
d) The change is applied while all connections stay open, and applications see no interruption
 
10. Which ApsaraDB RDS for MySQL edition lets read capacity scale on the instance's own secondary nodes, reached through a read-only routing endpoint, without creating separate read-only instances?
a) High-availability Edition
b) Cluster Edition
c) Basic Edition with a larger instance type
d) Basic Edition with the database proxy enabled

Answers:

Question: 01
Answer: b		 Question: 02
Answer: b, d		 Question: 03
Answer: b, c		 Question: 04
Answer: a, d		 Question: 05
Answer: c
Question: 06
Answer: a, b		 Question: 07
Answer: a, d		 Question: 08
Answer: c		 Question: 09
Answer: a		 Question: 10
Answer: b

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