Which best describes the functionality provided by the Network Access Layer in the TCP$/$IP model?

Question $26$ options:

Network Access is protocol layer responsible receiving and supporting higher layer connection such as telnet, FTP$,$ email etc...

Network Access layer provides services related physical network layer and support services such transmitting and receiving of frame over a particular transmission medium, such as an Ethernet cable

Network Access is protocol layer is responsible for supporting the encryption of specific data traffic between the routers and hosts

Network Access is protocol layer is not involved in any outbound data related connection and use to only support internal loopback adapter traffic

Network Access is protocol layer is used to support special encryption such as SSH and SFTP traffic only