Which statement regarding the IKEv$2$ tunneling protocol is accurate?

IKEv$2$ is based on technology developed by Cisco and standardized by the IETF.

IKEv$2$ offers fast throughput and good stability when moving between wireless hotspots.

IKEv$2$ is an older, Layer $2$ protocol developed by Microsoft that encapsulates VPN data frames.

IKEv$2$ is an open$-$source VPN protocol that utilizes OpenSSL for encryption.