单项选择题 Catalog Servers. Your domain structure contains one root domain and one child domain. You modify the folder permissions on a file server that is in the child domain. You discover that some Access Control entries start with S-1-5-21 and that no account name is listed. You need to list the account names. What should you do?（）

多项选择题 You work as an administrator at Contoso.com. The Contoso.com network consists of a single domain named Contoso.com. All servers in the Contoso.com domain, including domain controllers, have Windows Server 2012 R2 installed. Contoso.com has a Hyper-V server, named ENSUREPASS-SR13, which hosts multiple virtual machines. You have enabled the use of Single-root I/O virtualization. Which of the following is TRUE with regards to using Single-root I/O virtualization?（）

多项选择题 You work as an administrator at Contoso.com. The Contoso.com network consists of a single domain named Contoso.com. All servers on the Contoso.com network have Windows Server 2012 installed. You are in the process of installing a Server Core installation of Windows Server 2012 on a new Contoso.com server, named ENSUREPASS-SR13. Which of the following is TRUE with regards to a installing a Server Core installation of Windows Server 2012? （）