单项选择题
Which of the following expansion cards would be necessary to increase fault tolerance in a VoIP server？（）
A. Second Modem B. Second CPU C. Second HBA D. Second PBX card
单项选择题 WhichofthefollowingkeystrokesallowsinstallationofthirdpartystoragedriversduringaWindows set-up？（）
单项选择题 WhichofthefollowingmediatypescanholdtheGREATESTamountofdata？（）
多项选择题 WhichofthefollowingarewaystotransportSANtraffic？（）
