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ACP-Cloud1 Questions and Answers

Question # 6

Many of Alibaba Cloud services provide highlyreliable data storage capacity.For example, Object Storage Service (OSS) promises that its data reliability is no less than 99 99999999%. This high data reliability is solely achieved by RAID 0+1 redundancy technology.

A.

True

B.

False

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Question # 7

Alibaba Cloud Content Delivery Network (CDN) is a distributed network that is built and overlaid on the bearer network Moreover it is composed of edge node server clusters distributed across different regions. It replaces the traditional data transmission mode, which is centered on Web servers. When using Alibaba Cloud CDN, a user's request wilt first reach the edge node, and then receive data from the origin site by means of back-to-source Moreover, the admin can obtain visitor's real IP on the origin site. Which of the following descriptions relate to "obtaining visitors real IP" are correct? (Number of correct answers: 2)

A.

"Visitor's real IP" is saved in "X-Forwarded-For" header in HTTP protocol. It can be directly obtained in the user-defined LOG of Apache and Nginx.

B.

"Visitor's real IP" can only be obtained by modifying the application

C.

You can one-step activate the "recording visitor's real IP" function in Alibaba Cloud CDN console to directly view the visitor's real IP in the access log.

D.

In Windows, if IIS is used: after installing "F5XForwardedFor" extension module. 'Visitor's real IP" can then be seen in the log.

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Question # 8

RDS provides whitelist access policies.You can set permitted IP addresses and IP network segments to effectively prevent hackers from attacking the server by port scanning.

A.

True

B.

False

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Question # 9

OSS supports multi-part uploading for large files, namely dividing a large file into multiple parts and uploading them in order. This function is suitable for scenarios such as uploading large files or uploading files with poor connectivity.

After completing all the multi-part uploading tasks, if you forget to invoke the "Complete Multipart Upload" interface, there will be fragment files left in OSS, occupying bucket storage space-To facilitate deleting those files, OSS provides the________function.

A.

OpenAPI batch deletion

B.

Online batch deletion

C.

Bucket clearing

D.

Fragment management

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Question # 10

Which of the following statements is most accurate about the Data Transmission Service (DTS) database migration function?

A.

Supports database schema replication between instances.

B.

Supports warning when source and destination has some unresolved conflict found.

C.

Supports all of the above functions.

D.

Supports migrating MySQL databases from external sources.

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