Alibaba Cloud ACP-Cloud1 問題集

質問 1：
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. Bucket clearing
B. OpenAPI batch deletion
C. Fragment management
D. Online batch deletion
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 2：
When you create an Alibaba Cloud VPC. a VRouter and a route table will be created automatically. Which of the following statements is NOT correct about the route table?
A. The routing entries of the route table can not be modified manually.
B. Each VRouter may have multiple route tables.
C. When a VPC is deleted, the corresponding route table is also deleted.
D. This route table cannot be deleted
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 3：
When using Alibaba Cloud SLB to forward layer 7 (HTTP) service requests. SLB will replace the IP address in the HTTP header file to forward requests.
Therefore the source IP address that can be seen on the backend ECS instance is the IP address of SLB instead of the clients real IP address.
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 4：
Many websites have suffered DDoS attacks of different volumes. Therefore, accurate understanding of DDoS attacks is critical to website security protection. Which of the following statements about DDoS attacks is the MOST accurate?
A. The purpose of a DDoS attack is to steal confidential information.
B. The main purpose of a DDoS attack is to prevent the target server from providing normal services.
Currently, the DDoS attack is one of the strongest and most indefensible website attacks.
C. A DDoS attacks crack the server's logon password by means of a massive number of attempts.
D. DDoS attacks primarily target databases.
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 5：
Auto Scaling can automatically adjust the number of ECS instances based on user-defined scaling rules to meet service needs. If a user cannot predict service changes or does not have enough history data, he/she can still use dynamic scaling mode to automatically add/remove ECS instances based on certain Cloud Monitor performance metrics (such as the CPU utilization rate)
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 6：
When a customer uses Alibaba Cloud Object Storage Service (OSS) service and finds there exist an amount of Internet downstream traffic, he/she can use Alibaba Cloud Content Delivery Network (CDN) service to reduce the traffic cost.
Because the Internet traffic cost of CDN is lower than that of OSS, moreover, the back-to-source traffic cost from CDN to OSS is also lower than a user access to OSS directly.
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：
Which of the following statements is NOT correct, when comparing RDS with a self-built database?
A. Self-built database support quick deployment and elastic scaling.
B. RDS requires no O&M while self-built database require a dedicated DBA for maintenance, which results in high HR costs.
C. RDS features a high availability of 99 95% while self-built databases require you to implement data protection primary-standby replication, and RAID all by yourself.
D. RDS provides automatic backup while self-built databases require you to prepare storage space for backup copies and regularly verify that these copies can be restored.
正解：A