Q20 Single choice Mark for later What is a purpose of an SSH host key? A It must be sent by any SSH client in addition to a user key in order to identify the client's host. B It provides the server's identity information to connecting SSH clients. C It is the root key by which all user SSH keys must be signed. D It authenticates any user that logs into a remote machine from the key's host. E It is used by system services like cron, syslog or a backup job to automatically connect to remote hosts. Correct answer