নিচের কোনটি একটি অপটিক্যাল স্টোরেজ ডিভাইস?
A. সিডি রম
B. হার্ডডিস্ক
C. রম (ROM)
D. সিপিইউ (CPU)
E. কোনোটিই নয়
সঠিক উত্তরঃ
A.
সিডি রম
Explanation:
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