¿A qué rapidez deberá acercarse una fuente sonora, cuya frecuencia de emisión en reposo es de 420 Hz, para que un

receptor escuche una frecuencia de 500 Hz?

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.