51. A flat metallic disk that contains a large amount of permanently stored information read optically is called a ...........
Verified Answer
A. Monitor
B. ALU
C. CD-ROM
D. RAM
E. None of these
Explanation:
A CD-ROM (Compact Disc Read-Only Memory) is a flat, metallic optical disk storing permanent information read by laser. A monitor is output. ALU is a CPU component. RAM is volatile electronic memory. Thus, CD-ROM matches the description.