One month,Sybex book+Tcat(free .pdf) and Transcender.AND......the techexams.net's technotes

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A lot of questions about OSI and port.
I get some Unix/linux questions which gave me problems :"ifup eth0 "is a valid command in Unix/linux?
next 70-270 or Security+,but I think I'll choose Microsoft tests ....I get a litlle tired of Comptia test

Webmaster thanks for technotes again!