What is a hypothesis?
a. a report of the findings of scientific experiments
b. use of isolated facts to reach a general idea that may explain a phenomenon
c. a general statement made to infer a specific conclusion, often in an “if. . then” format.
d. a tentative statement, based on data, that can be used to guide further observations and experiments

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.