Dirty bit is used to show the a. Page that is less frequently accessed. b. Page with corrupted data c. The wrong page in the memory d. Page that is modified after being loaded into cache memory
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The dirty bit is a flag that is set when a page in memory has been modified or written to. Show more…
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Bit is short for: Select one: a. Binary unit b. Binary system c. Binary digit d. Digital byte
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a) Show that this algorithm determines the number of 1 bits in the bit string $S :$ $$ \begin{array}{c}{\text { procedure bit count(S: bit string) }} \\ {\text { count } :=0} \\ {\text { while } S \neq 0} \\ {\text { count } :=\operatorname{count}+1} \\ {S :=S \wedge(S-1)} \\ {\text { return count }\{\text { count is the number of } 1 \mathrm{s} \text { in } S\}}\end{array} $$ Here $S-1$ is the bit string obtained by changing the rightmost 1 bit of $S$ to a 0 and all the 0 bits to the right of this to 1 $\mathrm{s}$ . [Recall that $S \wedge(S-1)$ is the bit- wise $A N D$ of $S$ and $S-1 . ]$ b) How many bitwise $A N D$ operations are needed to find the number of 1 bits in a string $S$ using the algorithm in part (a)?
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Complexity of Algorithms
Getting information into memory is called ___________; getting information out of memory is called ___________. A. storage; retrieval B. encoding; storage C. encoding; retrieval D. storage; encoding
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