Match each wavelength to the correct region in the electromagnetic spectrum. Drag the items on the left to the location on the right
radio wav
shortest wavelengths
(less than 1 1011 meters)
ultraviole
about the size of an atom
(1 x 10 11 to 1 x 100 meters)
gammar
longest wavelengths
(1 x 10 to hundreds of meters)
microwa
about the size of a virus
(1 x 10° to 4 x 107 meters)
X-rays
size of a printed period to a pen
(1 x 10 to 1 x 10 meters)

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.