Terms you'll need to understand:
Virtual private network
Authentication
Encryption
Remote Access Service (RAS)
Multilink
RADIUS
Internet Authentication Server
Techniques you'll need to master:
Configuring inbound connections
Understanding the components of a remote access policy
Understanding how remote access policies are evaluated
Creating a remote access policy
Configuring a remote access profile
Configuring a virtual private network
Understanding and configuring Multilink connections
Configuring routing and remote access for DHCP integration
Understanding and configuring the different authentication and encryption protocols
Managing and monitoring remote access