Answer: Both the server and the client send certificates
Step-by-step explanation:
In a given network session the server sends a certificate to the client . The client is able to verify that the server's identity, the authentication uses a public encryption key and a digital signature .The client in turn retrieves a private key they can use to create a digital signature . A certificate is then sent by the client across the network to the server and it uses it to authenticate the client's identity . Once the server has confirmed that the client is who they say they are it grants access for the verified identification.