The most relevant fixed-price listing that has been used or worn previously.The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a display model or store return that has been used.See details for description of any imperfections.
Cisco Systems now holds over 80 percent of the Internet infrastructure. This text is an entry-point for the IT professional who is still unfamiliar with the way in which Cisco operates. It provides a fundamental overview of the subject and should be read before the certification study guides.