单项选择题 AcompanyutilizestheGFSbackupstandard.Whichofthefollowingdescribes（解释，翻译，描述）thisbackupmethod（方法，方式）？（）

单项选择题 Acompanywantstoexpandtheirstoragecapacityinaflexiblemannerovertheirexistingnetwork.Whichofthefollowingstoragesolutionswouldtheyconsider？（）

单项选择题 Atechniciansupportsusersinaclient/serverenvironment.Ausersuddenlycannotaccessany networkresources.Theusertriedtologontoaknownworkingcomputerbutwasunsuccessful.WhichofthefollowingshouldthetechniciancheckFIRST？（）