The memory bus (or front-side bus) is the data path that carries information between the CPU and the main memory (RAM). It determines the bandwidth and speed of data transfer.
Explanation:
ROM is non-volatile and its contents are typically fixed during manufacturing or programming; it cannot be changed by normal system operations.
Explanation:
Optical discs are immune to magnetic fields and are relatively durable under normal handling, while magnetic disks can be damaged by strong magnetic fields. However, optical is slower and lower capacity.
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