Which of the following would provide the BEST reference of normal server performance for a company’s environment？（）

单项选择题WhichofthefollowingexpansioncardswouldbenecessarytoincreasefaulttoleranceinaVoIP server？（）

A. Second Modem
B. Second CPU
C. Second HBA
D. Second PBX card

单项选择题WhichofthefollowingkeystrokesallowsinstallationofthirdpartystoragedriversduringaWindows set-up？（）

A. F6
B. F7
C. F8
D. F9

单项选择题WhichofthefollowingmediatypescanholdtheGREATESTamountofdata？（）

A. DVD
B. SDLT
C. LTO
D. Blu-Ray

多项选择题WhichofthefollowingarewaystotransportSANtraffic？（）

A. SATA
B. iSCSI
C. SCSI
D. Fiber channel
E. PATA

单项选择题WhichofthefollowingBESTdescribesaDAS？（）

A. A collection of disks presented as storage to multiple servers through dedicated channels. 
B. A collection of disks presented as storage to a single server through an existing network.
C. A collection of disks presented as storage to a single server through directly attached technologies.
D. A collection of disks presented as storage to multiple servers through an existing network.