最新なAlibaba Cloud ACA-Cloud1問題集（74題）、真実試験の問題を全部にカバー！

質問 1：
www.company.com is a newly launched social portal for exchanging automotive information. The portal is based on PHP, including 10GB of images, and some JavaScripts files. Currently one single ECS instance is used to host all the application content as well as a MySQL database. With the growing number of users, the portal is getting slower to load images or respond to user requests. Moreover, there will be additional 50GB image content uploaded to the portal every week. Which combination of Alibaba Cloud services below can help resolve the storage and performance issue at the same time?
A. OSS + RDS combination
B. OSS + MTS combination
C. OSS + ECS combination
D. OSS + CDN combination
正解：D
解説: (Pass4Test メンバーにのみ表示されます)

質問 2：
Alibaba Cloud does not support Intranet communication between products that are not in the same region, which does not mean?
A. ECS instances and other products in different regions, such as ApsaraDB for RDS and OSS instances, cannot communicate with each other on the intranet.
B. Server Load Balancer can be deployed for ECS instances in various regions.
C. Server Load Balancer cannot be deployed for ECS instances in various regions.
D. ECS instances in different regions cannot communicate with each other on the intranet.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)

質問 3：
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
正解：A
解説: (Pass4Test メンバーにのみ表示されます)

質問 4：
Which of the following scenarios is applicable to use RDS read-only instances?
A. Improves RDS storage capabilities.
B. Reduces the write pressure on the RDS primary instance.
C. Reduces the read pressure on the RDS primary instance.
D. Implements data backtracking for the last two days.
正解：C
解説: (Pass4Test メンバーにのみ表示されます)

質問 5：
You can create a custom image for ECS using which of the followings? (Choose two.)
A. System disk snapshot
B. Data disk snapshot
C. Memory snapshot
D. CPU snapshot
正解：A,B
解説: (Pass4Test メンバーにのみ表示されます)

質問 6：
Which of the following ECS instance configurations can't be changed if we don't change instance type?
A. System disk size
B. Mem size
C. Number of data disk
D. Data disk size
正解：B
解説: (Pass4Test メンバーにのみ表示されます)

質問 7：
A company wants to migrate its system to public cloud platform and they choose Alibaba Cloud. The migration process is very important and they want to ensure that everything works right. Which of the following services can the company choose?
A. Alibaba Cloud Architecture Design Training
B. Aftersales Support
C. Alibaba Cloud Product Operation Training
D. Event Management Service
正解：A
解説: (Pass4Test メンバーにのみ表示されます)

質問 8：
Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost effective storage service. OSS is superior than self-built storage in all these aspects. Which of the following advantage relates to the high availability of OSS?
A. Availability actually relies on the underlying hardware, which can break down easily. Once the hard disk malfunctions, it can also lead to permanent data loss.
B. Data has to be backed up by customer manually, which is time-consuming and labor-intensive.
C. The following features are available: Multiple Authentication and Authorization mechanism, Whitelist, Anti- leech URL, and Master-Sub Account
D. Data Reliability is not less than 99.99999999%. Data is backed up automatically with multiple redundant copies.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)