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Andrew S. Tanenbaum (OS) Edition 4 Exercise 4 Question 1 (Page No. 332)
Give five different path names for the file /etc/passwd. (Hint: Think about the directory entries ‘‘.’’ and ‘‘..’’.)
Give five different path names for the file /etc/passwd. (Hint: Think about the directory entries ‘‘.’’ and ‘‘..’’.)
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159
Andrew S. Tanenbaum (OS) Edition 4 Exercise 3 Question 48 (Page No. 260)
Can you think of any situations where supporting virtual memory would be a bad idea, and what would be gained by not having to support virtual memory? Explain.
Can you think of any situations where supporting virtual memory would be a bad idea, and what would be gained by not having to support virtual memory? Explain.
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162
Andrew S. Tanenbaum (OS) Edition 4 Exercise 3 Question 45 (Page No. 259)
Explain the difference between internal fragmentation and external fragmentation. Which one occurs in paging systems? Which one occurs in systems using pure segmentation?
Explain the difference between internal fragmentation and external fragmentation. Which one occurs in paging systems? Which one occurs in systems using pure segmentation?...
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175
Andrew S. Tanenbaum (OS) Edition 4 Exercise 3 Question 32 (Page No. 257)
In the $\text{WSClock}$ algorithm of Fig. $3-20(c),$ the hand points to a page with $R = 0.$ If $\tau = 400,$ will this page be removed? What about if $\tau = 1000?$
In the $\text{WSClock}$ algorithm of Fig. $3-20(c),$ the hand points to a page with $R = 0.$ If $\tau = 400,$ will this page be removed? What about if $\tau = 1000?$
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Andrew S. Tanenbaum (OS) Edition 4 Exercise 3 Question 29 (Page No. 257)
Consider the page sequence of Fig. $3-15(b)$. Suppose that the $R$ bits for the pages $B$ through $A$ are $11011011,$ respectively. Which page will second chance remove?
Consider the page sequence of Fig. $3-15(b)$. Suppose that the $R$ bits for the pages $B$ through $A$ are $11011011,$ respectively. Which page will second chance remove?
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