Home » Amazon » AWS DevOps Engineer Professional v.2 » Which of the following is NOT an advantage of Docker’s content addressable storage model?
Which of the following is NOT an advantage of Docker’s content addressable storage model?
A. random UUIDs improve filesystem performance
B. improved security
C. guarantees data integrity after push, pull, load, and save operations
D. avoids content ID collisions
Correct Answer: A
Explanation/Reference:
Explanation:
Docker 1.10 introduced a new content addressable storage model. This is a completely new way to address image and layer data on disk. Previously, image and layer data was referenced and stored using a randomly generated UUID. In the new model this is replaced by a secure content hash. The new model improves security, provides a built-in way to avoid ID collisions, and guarantees data integrity after pull, push, load, and save operations. It also enables better sharing of layers by allowing many images to freely share their layers even if they did not come from the same build.
Reference: https://docs.docker.com/engine/userguide/storagedriver/imagesandcontainers/#contentaddressable-storage
