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 ▼Can someone help .  Quode 09/9/26(土) 8:14

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 ■題名 : Can someone help .
 ■名前 : Quode <joannakp9+kef@gmail.com>
 ■日付 : 09/9/26(土) 8:14
 ■Web : http://unlockiphone3g.webs.com/
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   Study the basis for the Internet. This includes knowing the ISO seven-layer model and what each layer means. It means understanding various security mechanisms used to isolate net segments (a.k.a. sub-nets). It means understanding how components work - things such as gateways, routers, bridges, firewalls, perimeter intrusion detection systems, etc. Learn the various protocols and how they work. Learn the difference inside TCP/IP between a TCP and a UDP. You also need to understand, at least in general, how network services work - and how they don't. In the long run, there is no substitute for study and practise. LOTS of study, LOTS of practise.

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