单项选择题AcustomerusesanIBMxSeriesx366fortheirnetworkserver.TheyexperienceddowntimewhentheNICfailedearlierthisyear.TheirNovell6.5serverneedstobeaccessibleallthetimeatthehighestspeedpossible.Slotsareavailablewherenetworkadapterscanstillbeadded.Highavailabilityistheprimaryrequirement,butincreasednetworkbandwidthontheserverisalsorequired.Whichofthefollowingisthemostcost-effectivesolutiontosatisfyallofthecustomer’srequirements?()
A.Upgrade the network switches to 10Gb speed.
B.Install a dual port gigabit Ethernet adapter and configure adapter load balancing teaming with the onboard adapters.
C.Install one extra adapter to team with the internal adapter and configure adapter failover.
D.Install two additional NICs and configure adapter load balancing teaming with the onboard adapters.