Alibaba Cloud ACP-Cloud1 問題集

質問 1：
An Alibaba Cloud RDS read-only instance has its data synchronized from the master instance. Which of the following can be performed by the read-only instance from the RDS management console?
A. Database creation or deletion
B. Editing its own whitelist
C. Account authorization and account password changing
D. Backup policy configuration and manual backup
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 2：
You have created two Alibaba Cloud VPCs in two different regions To establish communication between these two VPCs via the Intranet, you can________.
A. Use the VRouter to create a new route table to enable the communication
B. No operation is needed, as VPCs under the same account are connected through the Intranet by default
C. Use CEN to establish communication between VPCs
D. Create a new access rule through the Security Group to enable the communication
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 3：
Alibaba Cloud SLB can help distribute traffic among multiple backend servers. Which of the following statements is correct about backend servers?
A. All servers that can be accessed through the Internet are supported
B. Supports all cloud products in Alibaba Cloud
C. The backend servers can only be Alibaba Cloud ECS instances
D. Supports AWS EC2
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 4：
When creating cloud product instances in Alibaba Cloud, you can choose the default VPC and VSwitch. The difference between non-default VPC/VSwitch and default VPC/VSwitch is that default VPC and VSwitch can only be created by Alibaba Cloud. Which of the following statements is incorrect about default VSwitch?
A. Default VSwitches are created for you by Alibaba Cloud. Any VSwitches you create are non-default switches
B. If you have already created a VPC and a VSwitch by yourself, when creating a cloud product instance, the instance cannot be created under the default VSwitch
C. Default VSwitches can only be created in default VPCs
D. Default and non-default VSwitches have the same constraints and operations
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 5：
You are designing a solution for a startup company, the proposed solution is like this You suggest they use ECS instances to process requests from mobile App clients, and use SLB to distribute data traffic and ensure the load across each backend ECS instance is balanced.
Moreover to deal with volatile fluctuations in business volume (page views are much higher on the weekends), you also suggest they use Auto Scaling to dynamically increase or reduce computing resources.
The company is satisfied with the solution you proposed. However, they have one concern that when removing an idle instance from the scaling group: if Auto Scaling shuts the instance down directly, the service running on that instance will be abruptly terminated, resulting in poor user experience.
In order to eliminate your customer's concern, which of the following solutions should you recommend them?
A. Find the ECS instance that is going to be removed from the backend server pool of the SLB instancer and automatically set the weight of this ECS instance to 0. This instance will not be assigned with new requests, and will be automatically removed from the backend server pool after existing tasks are completed.
B. Use the Lifecycle Hook function embedded m Auto Scaling Define a suitable timeout and a web hook to do the necessary work before the instance is removed.
C. Find the ECS instance that is going to be removed from the backend server pool of the SLB instance, and manually remove this instance from the backend server pool Applications running on this ECS instance will normally return results, but this instance will not be assigned with new requests.
D. First, insert a script into the image for creating the ECS instance Second, make the script run automatically when the operating system in this ECS instances is about to shut down. This script contains the processing logic that can ensure the instance finish all the remaining tasks before shutting down.
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 6：
Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low cost, and high reliability. OSS uses multiple copies of data to achieve data redundancy and can restore interrupted OSS services within two minutes when hardware failure occurs.
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 7：
In traditional IT scenarios, it is very difficult to achieve 99.99999999% data reliability for massive data storage and avoid SPOF (Single Point of Failure) at the same time. In Alibaba Cloud, the ________________ service supports the features described above.
A. OSS
B. ApsaraDB for RDS
C. CDN
D. SLB
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 8：
Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low costs, and high reliability. When talking about information security, the advantages of using OSS are
____________. (Choose two.)
A. Supports Anti-DDoS, automatic traffic cleaning, and "black holing" without any extra charges.
B. Offers a multi-user isolation mechanism directly, with no need to leverage RAM.
C. Offers Server Side Encryption for data security protection in OSS.
D. Provides Primary/Secondary region configuration for data reliability protection.
正解：C,D
解説: (Topexam メンバーにのみ表示されます)

質問 9：
A Virtual Private Cloud (VPC) is an isolated network environment that is completely isolated from each other The following statements about VPC are correct_________. (Number of correct answers: 2)
A. Subnets can be divided like the traditional network environment. Different cloud servers within each subnet are connected by the same router and different subnets are interconnected by switches.
B. Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network.
C. ECS instances in a VPC use security group firewalls for Layer 2 network access control.
D. The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mapped to the outside.
正解：B,D
解説: (Topexam メンバーにのみ表示されます)