What is a function of the GRE protocol?
- to configure the set of encryption and hashing algorithms that will be used to transform the data sent through the IPsec tunnel
- to encapsulate multiple OSI Layer 3 protocol packet types inside an IP tunnel
- to configure the IPsec tunnel lifetime
- to provide encryption through the IPsec tunnel
Answers Explanation & Hints: The transform set is the set of encryption and hashing algorithms that will be used to transform the data sent through the IPsec tunnel. GRE supports multiprotocol tunneling. It can encapsulate multiple OSI Layer 3 protocol packet types inside an IP tunnel. Routing protocols that are used across the tunnel enable dynamic exchange of routing information in the virtual network. GRE does not provide encryption.