Which two methods use IPsec to provide secure connectivity from the branch office to the headquarters office?
What is a key benefit of using a GRE tunnel to provide connectivity between branch offices and headquarters?
Which DSL encapsulation method requires client software running on the end-user PC that is directly connected to a DSL modem?
What two features are benefits of using GRE tunnels with IPsec over using an IPsec tunnel alone in building-to-building site-to-site VPNs?