Alibaba Cloud ACP-Cloud1 問題集

質問 1：
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. To ensure ECS instances created by Auto Scaling can correctly respond to user requests without additional configuration, applications deployed on these ECS instances must be
_______________.
A. Stateless and idempotent
B. All data is locally stored on ECS instance disks
C. Stateless and horizontally scalable
D. Stateful
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 2：
The difference between public and private Server Load Balancers (SLBs) is that private SLBs connect to their backend ECS instances using the private network (Intranet) while public SLBs connect to their backend ECS instances using the public network (Internet).
A. False
B. True
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 3：
When using ECS, you don't have to stop the ECS instance before resizing the system disk.
A. False
B. True
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 4：
The backend server pool of an Alibaba Cloud SLB contains multiple ECS instances, which may have different service capacities. To exploit the different service capacities of backend ECS instances, which of the following statements is correct?
A. Choose Weighted Round Robin mode to set higher weights to ECS instances with higher capacities The higher the weight of the backend ECS instance the higher chance that the instance will receive requests.
B. SLB cannot assign more requests to certain ECS instances.
C. Choose Weighted Least-Connection mode, and ECS instances with higher capacities will surely be assigned with more requests.
D. Choose Round-Robin model and ECS instances with higher capacities will surely be assigned with more requests.
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 5：
The effect of CDN is highly related to the scenario in which it is used. _______________________ is not an applicable scenario to use CDN.
A. Short video delivery website
B. Personal netdisk service having low repeated access rate
C. Pure static enterprise website
D. Application download site
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 6：
Which of the following is not a potential cause of latency on an RDS read-only instance?
A. There exists significant load on the ECS that is connected to this read-only instance.
B. This read-only instance's master instance is performing a lot of write operations.
C. The load on this read-only instance is significant.
D. The specification of this read-only instance is too low.
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 7：
Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low cost, and high reliability. No traffic charges are applied when files are uploaded to OSS via the management console or using Open API.
A. FALSE
B. TRUE
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 8：
Auto Scaling often works in conjunction with SLB, where scaling groups and SLB must be in the same region.
A. FALSE
B. TRUE
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 9：
Many of Alibaba Cloud services provide highly reliable 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. False
B. True
正解：A
解説: (Topexam メンバーにのみ表示されます)