1.Hardware and Installation 2.The Boot Process 3.Filesystem and Software Administration 4.User Administration 5.System Administration Tools 6.Kernel Services and Configuration | 7.Apache and Squid 8.NFS and Samba 9.DNS and Electronic Mail 10.FTP, xinetd, and OpenSSH 11.The X Window System 12.Securing Services 13.Troubleshooting |