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IN the path to cisco nteworking llike CCNA , CCNP , CCIE.

Does they are purely hardware based or somewhere unix/linux,window server knowledge has something to do with it.

I mean knowldege of linux system is required to become efficient CCNP OR CCIE or they are totally separate

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closed as off-topic by kce, Ward, mdpc, Michael Hampton Sep 27 '13 at 23:44

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions seeking product, service, or learning material recommendations are off-topic because they tend to become obsolete quickly. Instead, describe your situation and the specific problem you're trying to solve." – kce, mdpc, Michael Hampton
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up vote 2 down vote accepted

Not necessary to pass the certification. However, having some development experience can certainly make your working life easier, especially when it comes to repeating tasks (imagine checking if your 1500 switches have HTTP enabled or not, manually, compared to having some code doing it for you).

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You don't need any unix/linux knowledge for CCNA and CCNP, may be a bit for some CCIE but I don't think.
Cisco certification are really only pure network and cisco oriented

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