Question 1

A developer creates a MySQL database service on a Linux ECS instance (ECS-A), and wants to access this

database service from another instance (ECS-B) in the same VPC using the private IP address bound to the

ECS instance, however, the connection can't be established. What could cause this? (Number of correct

answers: 2)

Options :

A : The security group for ECS-A does not have the default MySQL service port open.

B : The built-in firewall on ECS-A has rules that prohibit external access to the MySQL service port.

C : No Internet IP address is configured for ECS-A.

D : The bind-address parameter set in the my.ini configuration file of the MySQL service is commented out.

Answer: C,D

Question 2

Log Service uses a semi-structured data model to define a log. This mode contains five data fields:

Topic, Time, Content, Source, and Tags. Log Service has different requirements for the format of each field in

the log. Which of the following fields cannot be empty characters? (Number of correct answers: 4)

Options :

A : Topic

B : Time

C : Content

D : Source

E : Tags

Answer: A,B,D

Question 3

The event monitoring feature in CIoudMonitor provides custom event monitoring functions. Which of the

following data reporting methods are included? (Number of correct answers: 3)

Options :

A : Report event monitoring through the Python SDK

B : Report event monitoring through the Java SDK

C : Report event monitoring data via HTTP

D : Report event monitoring data through the command line (CU)

Answer: A,B,C

Question 4

Which of the following permission control policies does Object Storage Service (OSS) provide for access to

objects stored in a bucket? (Number of correct answers: 4)

Options :

A : ACL

B : RAM Policy

C : Bucket Policy

D : STS authorization

E : Dynamic blacklist

F : Object Policy

G :

IntranetAccess

Answer: A,C,D

Question 5

Which of the following is NOT a feature of Alibaba Cloud's Cassandra database service?

Options :

A : Centerless distributed architecture

B :

Supports both narrow and wide tables, providing flexible schema functions

C :

Cluster storage, strong expansion of read and write capabilities

D :

Enterprise-level capabilities such as disaster tolerance, backup and recovery, security, and monitoring

across data centers

Answer: B

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