Your company has a main office and 15 branch offices. The company has a single Active Directory domain. All servers run Windows Server 2008 R2.You need to ensure that the VPN connections between the main office and the branch offices meet the following requirements:
¡¤All data must be encrypted by using en-to-end encryption.
¡¤The VPN connection must use compute-level authentication.
¡¤User names and passwords cannot be used for authentication
What should you do?()
A. Configure an IPsec connection to use tunnel mode and preshared key authentication.
B. Configure a PPTP connection to use version 2 of the MS-CHAP v2 authentication.
C. Configure a L2TP/IPsec connection to use the EAP-TLS authentication.
D. Configure a L2TP/IPsec connection to use version 2 of the MS-CHAP v2 authentication.