1. You are the administrator of an organization with a single Active Directory domain. A user who left the company returns after 16 weeks. The user tries to log onto their old computer and receives an error stating that authentication has failed. The user’s account has been enabled. You need to ensure that the user is able to log onto the domain using that computer. What do you do?
A. Reset the computer account in Active Directory. Disjoin the computer from the domain and then rejoin the computer to the domain.
B. Run the ADadd command to rejoin the computer account.
C. Run the MMC utility on the user’s computer and add the Domain Computers snap-in.
D. Re-create the user account and reconnect the user account to the computer ...