单项选择题 A server connects to iSCSI presented SAN storage array through a dedicated NIC；however，the SAN traffic is passed on the same switches as the Ethernet network and VoIP traffic. The size of the presented drive is 700GB. The administrator has noticed a decrease in storage performance.  Which of the following is MOST likely the cause？ （）

单项选择题 WhichofthefollowingistheGREATESTenvironmentalconcernforaserveroperatingenvironment？（）

单项选择题 Whichofthefollowingshouldbedonebeforeandafteraserviceorrepairisperformedonaserver？（）