【单选题】
Your company has a main office and a branch office. The network contains an Active Directory forest. All users on the network access the Internet from their computers. The company hires a temporary employee who has his own portable computer. The employee connects his portable computer to the network. When the employee attempts to join the computer to the domain, the connection fails. A help desk technician reports the following about the employee. He has a domain user account.His computer can access Internet Web sites.His computer can contact domain controllers by using the domain controllers IP addresses. You need to ensure that the employees computer can join the domain. The solution must ensure that the computer can access resources on the Internet. What should you do?（）
A、Modify the time zone for the computer.
B、Modify the IPv4 settings on the computer.
C、Create an A record for the computer in an internal DNS zone.
D、Request that an administrator create a prestaged computer account in the domain.
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