Regarding source deduplication and destination deduplication, the correct multiple choice is: (multiple choice)

Source-side deduplication first performs a hash comparison on the transmitted data block at the source-side. If the data block has been previously transmitted, it only needs to be transmitted.

Greek index value.

Compared with the post-processing method, the data transmission performance of the target-side deduplication online processing method is better.

Deduplication at the target end saves bandwidth resources and does not occupy resources at the source end.

Source end deduplication, occupying source end resources, can save bandwidth resources.