I am afraid i don't know any books about networking i seem to just cope with problems as they appear,maybe posting this in the network forum as well if you haven't already might be a good idea,and grats on passing the exam ))).
What is ransomware and how do I protect my PC from WannaCry?
What I learned from my mentor, Oscar-winning VFX supervisor Phil Tippett
Siri vs Google Assistant
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