নিম্নের কোনটি সেকেন্ডারি স্টোর ডিভাইজ-
সমাধান
সঠিক উত্তর: Option A
An external hard drive is a common secondary storage device used for data backup." Secondary storage refers to storage devices and media that are not constantly accessible by a computer system. Examples include external hard drives, portable flash drives, CDs, and DVDs.