ACA-Developer 무료 덤프문제 온라인 액세스

Which of the following options is correct, regarding Object ACL in Alibaba Cloud's Object Storage Service (OSS)?

• A.You can set the ACL associated with an object by examining the X-OSS-Object-ACL header in the HEAD request, when making the PutObjectACL API call.
• B.Object ACL is an object-level (not bucket level) permission control mechanism. There are currently three levels of access rights: private, public-read, and public-read-write.
• C."Private" indicates that an object is a private resource, that is, only the owner of the object has read and write permissions on the object, and other users can read but have no permission to modify or delete the object.
• D.If the permissions of an object are not set, the permissions of the object are inherited from the bucket.

Which of the following statements about migrating data into and out of Object Storage Service (OSS) are correct? (Number of correct answers: 3)

• A.A migration job occupies the network resources of the source and the destination. To ensure business continuity, we recommend that you specify a rate limit for a migration Job or run the migration job during an off-peak period.
• B.Online migration supports both migrating buckets at a time, and migrating all the data under an Alibaba Cloud account at a single time.
• C.You cannot migrate data between OSS buckets if the data at the source is stored in a bucket of the Archive type.
• D.You can migrate data between OSS buckets in any of the following conditions: Buckets are located within the same region, buckets are located across regions and buckets belong to different Alibaba Cloud accounts.

Which of the following is NOT a feature of Alibaba Cloud's Cassandra database service?

• A.Supports both narrow and wide tables, providing flexible schema functions
• B.Cluster storage, strong expansion of read and write capabilities
• C.Enterprise-level capabilities such as disaster tolerance, backup and recovery, security, and monitoring across data centers
• D.Centerless distributed architecture

Which of the following are types of backend services that API Gateway supports? (Number of correct answers: 3)

• A.HTTP(s) service
• B.Log service
• C.Resources In a VPC
• D.Function Compute
• E.CloudMonitor Service

Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)

• A.DMS (Data Management Service)
• B.aliyun-cll
• C.Sentinel
• D.Redis-cIl