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Which book or books are being used in these lectures on Distributed Systems?

Kindly take a look at these lecture materials. The instructor is suggesting to study books of Tanenbaum along with his supplied reading list. But, I am not finding any similarity of the content ...
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What is the asymptotic bound for $1n + 2(n-1) + 3(n-2) + … + (n-1)2 + n$?
My best guess is that the series $$\sum_{i=1}^n i(n-(i-1))$$ becomes $$2 \Bigg[ n + 2(n-1) + ... + \frac{n}{2} \bigg(n-\bigg(\frac{n}{2}-1\bigg)\Bigg)\Bigg]$$ So the highest term is $n^2$ and ...