多项选择题
A. Riser cards
B. Water cooling
C. Shroud
D. Baffle
E. Heat sinks
单项选择题 Aserverwasrecentlyupdatedwiththelatestantivirusdefinitions.Immediatelyaftertheupdate，theserverbeginstoreport‘filenotfound’errorsforamissioncriticalapplication.Whichofthe followingistheMOSTlikelyreasonforthis？（）
单项选择题 WhichofthefollowingisanadvantageofattachingaNASdevicetothenetwork？（）
单项选择题 Multiple expansion cards are installed in a rack mount 1U server. All expansion cards stop working simultaneously. Which of the following is the MOST likely cause of the problem?（）