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

• A.Online migration supports both migrating buckets at a time, and migrating all the data under an Alibaba Cloud account at a single time.
• B.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.
• C.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.
• D.You cannot migrate data between OSS buckets if the data at the source is stored in a bucket of the Archive type.

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

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

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In Alibaba Cloud RocketMQ, messages are kept for up to _____ days. We recommend configuring a monitoring service to watch the consumption status, and intervene manually when ''not consumed but to be deleted'' message alarms occur.

• A.3
• B.4
• C.5
• D.2

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Which of the following operations can be performed through Log Service sAPI? (Number of correct answers:
3)

• A.Collect logs based on Logtail configuration and Logtail machine group information
• B.Access control for different users
• C.Create a Logstore, write and read logs to the Logstore
• D.Deliver logs to OSS for storage and analysis

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Log Service uses a semi-structured data model to define a log. This mode contains five data fields:
Topic, Time, Content, Source, and Tags. Log Service has different requirements for the format of each field in the log. Which of the following fields cannot be empty characters? (Number of correct answers: 4)

• A.Time
• B.Topic
• C.Source
• D.Content
• E.Tags

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