Exam 70-741 topic 2 question 44 discussion

Note: This question is part of a series of questions that use the same or similar answer choices. An answer choice may be correct for more than one question in the series. Each question is independent of the other questions in this series. Information and details provided in a question apply only to that question.
You have 2000 devices. One hundred of the devices are mobile devices that have physical addresses beginning with 98-5F.
You have a DHCP server named Server1.
You need to ensure that the mobile devices register their host name by using a DNS suffix of mobile.contoso.com.
What should you do on Server1?