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A recent study from Jupiter Media Metrix suggests that job hunters are loyal to one career site ( job board ) . Environmental benefits come into play with virtualization avoiding the requirement to otherwise deploy multiple instances of the standalone appliance to meet the needs of multiple groups . The requirement to serve the Data Center environment mandates that a solid design methodology be used to build the network . When the Data Center is operational , the role of the administrator is to manage the devices to maximize uptime of available services . The two largest job sites also had the highest percentage of loyal users . " First it was a software company , then it was a job board , then it was a service company then it was a software company again . Implementing switching platforms that accommodate growth in connectivity and functionality is one key requirement of a Data Center Switch . Interestingly , this finding provokes yet another definition of a passive vs. an active job hunter . There is no requirement to first make an additional copy . The Firewall Module ( FWSM ) and Application Control Engine ( ACE ) module also offer Virtualization support . The Data Center is the consolidation point for provisioning multiple services that drive an Enterprise business . Just as in a UNIX or Windows environment it is prudent to minimize the practice of performing administrative tasks with root or administrator privileges , the same cautious approach of granting the minimum amount of privileges to perform a task holds true when working with a SAN . Equally compelling is the consolidation of the FCIP services onto a single platform in which one management interface for the various intelligent services can be centrally administered and provisioned . As the data load on the Data Center grows , so too the requirement for higher performance loads on these devices , which can be met by these modules . The Cisco Catalyst 3560 supports four egress queues per port , allowing the network administrator to be more discriminating and specific in assigning priorities for the various applications on the LAN .