Which of the following SCSI signaling systems uses one return line for every outgoing line， is less susceptible to interference， signal degradation， crosstalk， and allows a cable length of up to 25 meters？（）

单项选择题Afterupgradingaservermotherboardtothelatestfirmwarerevision，configuringLANaccessintheSSU（SystemSetupUtility）fails.WhichactionshouldbetakenFIRSTtocorrectthisproblem？（）

A. replace the NIC
B. install the latest SSU （System Setup Utility） version
C. upgrade the firmware on the NIC
D. assign the NIC a static IRQ in the SSU （System Setup Utility）

单项选择题Thecurrentdatacenterhasrunoutofspace.Aroomthatislocatednexttotheexistingdatacenteristhenusedtohousetworackscontainingsixservers.Sixmonthslater，physicalhousekeepingisperformedaspartofamid-yearmaintenanceplan.WhichenvironmentalconditiondiscoveredintheroomisLEASTcritical？（）

A. There are discolored ceiling tiles near the middle of the room.
B. Large amounts of dust have accumulated in the corners of the room.
C. The anti-static carpet has been removed resulting in a bare painted concrete floor.
D. A wet pipe water-based sprinkler system has been installed above the racks.

单项选择题WhichRAIDstandardcombinesdatastripingacrossdriveswithmirroring？（）

A. RAID 0+1
B. RAID 1+5
C. RAID 3
D. Hybrid RAID 5+

单项选择题WhichbackupsolutionistheMOSTappropriateforbackingupapayloadfromacorporationwithmultipleserversandapproximately300GBofdata？（）

A. multiple AIT （Advanced Intelligent Tape） drives configured for each server
B. a standalone LTO （Linear Tape-Open） drive configured for all servers
C. standalone DAT （Digital Audio Tape） drives configured for each server
D. a tape library unit with more then one DAT （Digital Audio Tape） drive configured for all servers
E. a tape library unit with more the one SDLT （SuperDLT） drive configured for all servers

单项选择题Whichactionincreasesserveravailability？（）

A. configuring a second network card with a different IP address
B. replacing the existing 100 Mbps NIC with a gigabit Ethernet NIC
C. using adapter teaming and configuring the second network card with the same IP address as the first network card
D. installing a dual-port network card that can handle the future growth and setting one NIC to 10 Mbps and one NIC to 100 Mbps