You can use the graph to find out the average volume of carbon dioxide gas given off per second in the period between 10 seconds and 30 seconds. To do this you should draw a line at 10 seconds on
the horizontal axis up to where it meets the line of the graph. Then draw another line up at 30
seconds. Draw a line across as shown in the graph below.
70
60
50
40
volume of carbon
dioxide / cm3
30
20
10
0
20
40
60
80
100
time / s​

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.