单选题A technician supports users in a client/server environment. A user suddenly cannot access any network resources. The user tried to logon to a known working computer but was unsuccessful.Which of the following should the technician check FIRST？（）ACheck if the user account is lockedBCheck group policyCCheck the drive for fragmentationDCheck NTFS permissions
单选题
A technician supports users in a client/server environment. A user suddenly cannot access any network resources. The user tried to logon to a known working computer but was unsuccessful.Which of the following should the technician check FIRST？（）
A
Check if the user account is locked
B
Check group policy
C
Check the drive for fragmentation
D
Check NTFS permissions
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