Vendor: Microsoft
Exam Code: 70-685
Exam Name: Pro: Windows 7, Enterprise Desktop Support Technician
Version: 14.81
QUESTION 51
Several mobile users access the Internet by using cellular connections.
The help desk reports a high volume of calls from mobile users who report the following connection problems:
– When their cellular connections fail, their VPN connections also fail.
– When their cellular connections are reestablished, they must manually connect to the VPN server.
You need to recommend a solution to ensure that the VPN connections are automatically reestablished.
What should you recommend?
A. Implement an IKEv2 VPN.
B. Implement an SSTP-based VPN.
C. Configure credential roaming.
D. Configure a Kerberos user ticket lifetime.
Answer: A
Explanation:
Internet Key Exchange version 2 (IKEv2) support was added in Windows Server2008R2 and Windows7 to accommodate a new VPN type that supports VPN Reconnect. VPN Reconnect refers to the ability of a VPN connection to survive short interruptions in network connectivity, such as when you move from one wireless access point to another, or when you switch from a wired to a wireless network adapter. By taking advantage of features in IKEv2, even changes in IP address at the client do not drop the VPN connection or require any user actions. As soon as connectivity to the RRAS VPN server is restored, then the VPN tunnel is automatically reestablished.