Dell EMC Associate – Backup and Recovery Solutions Design v2 — Question 28

A backup of 20 GB of data is reduced by a deduplication algorithm to 4 GB of data. What is the deduplication ratio?

Answer options

• A. 1:20
• B. 5:1
• C. 20:1
• D. 1:5

Correct answer: B

Explanation

The deduplication ratio is calculated by dividing the original size by the deduplicated size, which in this case is 20 GB divided by 4 GB, resulting in a ratio of 5:1. Options A, C, and D represent incorrect ratios as they do not reflect the actual reduction achieved through deduplication.