* # What port does sshd use by defaults? * # What file is used to configure sshd?* # What sftp commands are used to upload/download files?* # What kind of files are stored in the "~/.ssh/" directory?* # How do you determine whether the sshd service is running on your system or not?* # What is the purpose of the ~/.ssh/known_hosts file?* # What is the purpose of the ~/.ssh/authorized_keys file?* # Which system log file records each use of the sudo command?* # How do you stop the sshd service?* # How do you tunnel XWindows applications?* # What port is the default scp port?* # What port(s) is/are used by httpd service?