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Even CareerBuilder is exploring new turf with its attempts to integrate national and local reach . Graphical trend charts and an alert LED help you identify problems before they cause network outages . For networks that require additional security , advanced quality of service ( QoS ) , and high availability , Enhanced Image software delivers intelligent services such as rate limiting and security filtering for deployment at the network edge . Cisco Smartports have preset Cisco recommended network configurations including quality of service , security , and multicast settings to allow for transparent integration of data , video , IP communications , and wireless LAN applications . IVR allows selective transfer of data traffic between specific initiators and targets on different VSANs while maintaining isolation of control traffic within each VSAN . Additional testing using separate Hitachi arrays separated by 1800 miles ( 2880 kilometers ) brought results that were wire rate throughout the transfer and did not show any signs of slowing toward the end of the transfer . The Cisco Catalyst 4500 Series extends control to the network edge with intelligent network services , including sophisticated quality of service ( QoS ) , predictable performance , advanced security , and comprehensive management . Oftentimes the only way to diagnose a problem is through a site visit , which contributes significantly to the operating expenses of an access network . The Cisco Network Assistant Software Guide Mode leads the user step-by-step through the configuration of advanced features and provides enhanced online help for context-sensitive assistance . With the Smartports phone and desktop role , voice quality is guaranteed .