Which two interfaces are considered overlay links? (Choose two.)
Which two interfaces are considered overlay links? (Choose two.)
IPsec and GRE are considered overlay links. These types of links are used to create a virtual network over an existing physical network. IPsec is used to secure Internet Protocol communications by authenticating and encrypting each IP packet of a communication session. GRE (Generic Routing Encapsulation) is a tunneling protocol that can encapsulate a wide variety of network layer protocols inside virtual point-to-point links. This allows for the creation of a virtual network that can securely and efficiently span multiple physical networks.
A & D correct , study guide page 84
A and D. Page 84.