Your IT director has decided to allow employees to use their laptops at home as well as in the office. You have deployed the Junos Pulse client to allow access to the offices 802.1X-enabled wired network. Your company also has the Junos Pulse Secure Access Service deployed. You want the Junos Pulse client to automatically launch the appropriate access method depending on each users location.Which three are supported to determine the users location?（）
A. MAC address
B. DNS server
C. DHCP server
D. resolve address
E. endpoint address