Answer
SHA256 layer hashes enable deduplication, integrity guarantees, and caching.
Quick Answer
Content-addressable storage means each layer is identified by the SHA256 hash of its content. Two identical layers (same files, same content) have the same hash and are stored only once — regardless of which image they came from. This enables deduplication across all images on a host and in registries without extra effort.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ