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dash interpreter
data categories 2nd
datagram delivery service (IP)
dates and times
     attacks using malevolent date programs
     hardware clock, configuring
     hours, specifying in cron facility
     maintaining system time
     NTP (Network Time Protocol)
     synchronizing time on all systems
     times for crontab command execution
db (database) entries, named files
dd utility
     burning copy of data CD
     creating boot floppy
     facilitating I/O with block devices
DDoS (distributed denial of service attacks), using echo broadcasts
.deb file extension
debhelper programs
Debian-based systems
     building packages
         signing packages
     configuring as DHCP client
     creating boot floppy
     initrd and /linuxrc
     keeping Debian up to date
     mkinitrd command
     modifying packages
     NIS master server
     package management 2nd 3rd
         alien command
         apt-get command
         dpkg command
         dselect command
     pcmcia-cs module
     pcnetconfig command
     pppconfig tool
     runlevels, customizing
         update-rc.d command
     security information
     system initialization techniques
     wireless NIC card
debugfs command 2nd
debuild command
default gateway
default runlevel
default shell
.deny files
dependencies
     kernel modules
     Makefile
     Perl packages
     shared libraries
depfile directive, modules.conf
depmod command 2nd
desktop environments 2nd
/dev directory 2nd 3rd
     /null
development kernels
device drivers, activitation
device files 2nd
     backups to tape and other removable media
     device field, /etc/fstab file
     IDE
     SCSI
     serial port
     tape drives
         nonrewinding
device settings, common 2nd
devices
    network
         configuration files
         failed
     review questions and exercises
df command 2nd
DH_ variables
dhclient
DHCP (Dynamic Host Configuration Protocol) 2nd 3rd
     clients
         Debian, configuring as client
         dhclient
         pump
         Red Hat, configuring as client
     configuring system for
     dhcpd 2nd
     Ethernet (eth0) interface
     ifconfig utility and
     leases
     relay
     releasing lease before removing PCMCIA card
     server daemon, launching
     server, setting up
         bootp support
         DHCP options
         dhcpd fixed IP assignment
         dhcpd random IP assignment
         dhcpd.leases
     subnets and relays
dial-up connections
     checking
     configuration files
     configuration tools
     connecting with a modem
     IP routing configuration
     ISDN
     multi-homed systems
     poff command
     pon and poff scripts
     protocols
     wvdial command
     wvdial.conf file (examples)
     wvdialconf command
         examples
diff command
differential backup
dig command 2nd 3rd
digital devices, synchronous connections
directives
     awk programs
     slapd.conf file
directories
     backup recommended for
     creating
     current working directory
     hierarchy
     removing
     root filesystem
     RPM packages
     workgroup directory, setting up
disaster planning
discard service
disk blocks
disk drives
     filesystems, creating
     hard disk devices
    interfaces
         IDE (Integrated Device Electronics)
         SCSI 2nd
     partitioning 2nd 3rd
         fdisk command
         guidelines for Linux system
         swap partitions
         swap space
         system considerations
     partitions
     supported under Linux
disk quotas 2nd 3rd
     enabling
     quota commands
     quota limits
disk space
     free, monitoring with df command
     monitoring usage with du command
disks
     external, detecting
     fragmentation
DISPLAY environment variable 2nd
display managers 2nd 3rd
     xdm, configuring
DMA (Direct Memory Access) 2nd
dmesg command
     troubleshooting hardware
DNS (Domain Name System) 2nd 3rd
     BIND v4 vs. v8 configuration files
     BIND, basic configuration
         named.conf file
         primary DNS server
         secondary and tertiary DNS server
     domain name registration
     errors
     Exam 202 review
     module supporting requests in Perl
     name resolution with Net::DNS Perl module
     problems with, route command and
     query utiilities
     resolver
     securing DNS server
         dedicated servers
         recursive queries
         restricting zone transfers
         running BIND in chroot jail/reduced privileges
         transaction signatures (TSIGs)
     servers, querying commands
     smart host-based mail delivery vs.
     SMTP delivery based on
     system hanging during DNS lookups
     zones, creating and maintaining
         forward zones
         reverse DNS files
         tools
dnsdomainname command
documentation 2nd
     Apache
         mod_rewrite module
         mod_status module
     highlighter's index
     local system
         info pages
         information in /usr/share/doc
         manpages
         text files and paging
     notifying users on system-related issues
     resources on the Internet
         LDP
         mailing lists
         Usenet newsgroups
         web sites
     review questions and exercises
     RPM package build
     Squid
     tutorials
domain controller for Windows PCs, Samba server as
domain names
     NIS 2nd
     resolving to IP records
domainname command
domaintable file (Sendmail)
DoS (denial of service) attacks
     DNS cache poisioning
dotted quad decimal notation
downstream clients (INN)
dpkg command 2nd 3rd
dpkg-buildpackage command
DS directive
dselect command 2nd
DSOs (Dynamically Shared Objects)
     checking compilation of
     loading at Apache startup
du command 2nd
dump frequency (etc/fstab)
dumpe2fs command 2nd
dynamic routing
dynamically linked programs 2nd