Here are some practice problems from the textbook (Tanenbaum, 4th edition)

Chapter 1: (pg 38)
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1,2,10,11,12

Chapter 2: (pg 113)
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1,5,6,13,18,19,20,26,28

Chapter 4: (pg 299)
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26,27,28,29

Chapter 5: (pg 398)
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2,3,5,18,20,23,33

Chapter 6: (pg 477)
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2,3,4,8,11,17,18,20