Explanation
OSS object types are the storage classes that define the performance and cost of storing objects in OSS. OSS supports four object types: Standard, Infrequent Access (IA), Archive, and Cold Archive1. Each object type has different characteristics and scenarios, such as availability, durability, minimum storage duration, and storage overhead2.
Object lifecycle management is a feature that allows you to manage objects efficiently and minimize costs throughout the lifecycle of the objects in your bucket. Lifecycle settings create a set of rules that help define the actions that an OSS bucket must perform on a group of objects. For example, you can configure lifecycle rules to automatically delete expired objects, or convert the storage class of objects to a lower-cost object type3.
You can configure lifecycle rules based on the object type of the objects in your bucket. You can specify the object type as a parameter for the lifecycle rule, and OSS will apply the rule to the objects that match the object type. For example, you can create a lifecycle rule to convert the object type of objects from Standard to IA after 30 days, and then to Archive after 180 days4.
Therefore, the correct answer is A. Infrequent access and C. Archive, as these are two of the object types that can be configured as parameters for object lifecycle management. B. Snapshot and D. Chunk are not valid object types in OSS. References: 1: Overview of object types - Object Storage Service - Alibaba Cloud Documentation Center2: Object Storage Service (OSS) - Alibaba Cloud3: Manage Your OSS Storage Costs Using Lifecycle Policies - Alibaba Cloud4: Lifecycle rules based on the last modified time - Object Storage Service - Alibaba Cloud Documentation Center.

Explanation
A snapshot is a copy of data on a disk at a certain point in time. It is used to back up and restore data, or create custom images. Snapshots can capture the data of system disks, data disks, and shared block storage devices1.
References: 1: Alibaba Cloud Academy, "Snapshot",
https://edu.alibabacloud.com/elearning/lesson/ACA-Cloud-Computing-Certification/lesson-3-snapshot

Explanation
D is the correct answer because OSS supports 3 internal data copies, no human intervention is required to recover the data when anything goes wrong. OSS provides high data reliability and durability by storing multiple replicas of data on different devices in the same region. OSS automatically detects and repairs data errors or failures, and ensures data consistency across all replicas. OSS also supports cross-region replication (CRR) to back up data to another region for disaster recovery12 A, B, and C are incorrect answers because they do not reflect the actual backup technology and policies of OSS.
A is incorrect because OSS does not require manual recovery of data, as it automatically handles data errors or failures.
B is incorrect because OSS provides data protection and backup for customers, and customers do not need to safeguard their own data or use offsite backups.
C is incorrect because OSS does not use RAID0+1 configuration of its underlying physical hard disks, but rather uses a distributed storage system that stores multiple replicas of data on different devices.
References: 1: OSS Overview 2: OSS Backup