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NOS220 Review (Ch13)
Linux Study Guide - Configuring Network Services
Question | Answer |
---|---|
ab (Apache benchmark) command | A command that can be used to obtain performance benchmarks for a Web server such as Apache. |
apachectl command | A command that can be used to start, stop, and restart the Apache Web server as well as check for syntax errors within the Apache configuration file. |
Berkeley Internet Name Daemon (BIND) | The standard that all DNS servers and DNS configuration files adhere to. |
BIND configuration utility | A graphical utility that can be used to generate and modify the files that are used by the DNS name daemon. |
curl command | A command that can be used to obtain a Web page from a Web server. |
database | A file that contains data that is organized into tables. |
directive | A line within a configuration file. |
DNS cache file | A file that contains the IP addresses of top-level DNS servers. |
document root | The directory on a Web server that stores Web content for distribution to Web browsers. |
exporting | The process used to describe the sharing of a directory using NFS to other computers. |
field | An attribute within a record in a database table. |
File Transfer Protocol (FTP) | The most common protocol used to transfer files across networks such as the Internet. |
forward lookup | A DNS name resolution request whereby an FQDN is resolved to an IP address. |
ftp command | A command-line FTP client that is found in most operating systems. |
hwclock command | A command that can be used to view and modify the system clock within the computer BIOS. |
infrastructure services | Network services that provide network and operating system-specific functionality to other computers on the network. |
iterative query | A DNS resolution request that was resolved without the use of top-level DNS servers. |
jitter | The difference between time measurements from several different NTP servers. |
mail command | A common e-mail client on UNIX, Linux, and Macintosh systems. |
master DNS server | The DNS server that contains a read/write copy of the zone. See also primary DNS server. |
NetBIOS | A protocol used by Windows computers that adds a unique 15-character name to file- and printer-sharing traffic. |
Network File System (NFS) | A set of software components that can be used to share files natively between UNIX, Linux, and Macintosh computers on a network. |
Network Information Service (NIS) | A set of software components that can be used to standardize the configuration files across several different Linux and UNIX computers. |
Network Time Protocol (NTP) | A protocol that can be used to obtain time information from other computers on the Internet. |
newaliases command | A command that can be used to rebuild the e-mail alias database based on the entries within the /etc/aliases file. |
NIS client | A computer in an NIS domain that receives its configuration from an NIS master server or NIS slave server. |
NIS domain | A group of computers that share the same NIS configuration. |
NIS map | A system configuration that is shared by the computers within an NIS domain. |
NIS master server | The computer in an NIS domain that contains the master copy of all NIS maps. |
NIS slave server | A computer in an NIS domain that receives a read-only copy of all NIS maps from an NIS master server. |
nmblookup command | A command that can test NetBIOS name resolution on a Linux system. |
ntpdate command | A command that can view the current system time as well as synchronize the system time with an NTP server. |
ntpq command | A command that can query the state of an NTP server or client. |
offset | The difference in time between two computers that use the NTP protocol. |
Postfix | A common e-mail server daemon used on Linux systems that is easy to configure. |
PostgreSQL | A common SQL server used on Linux computers. |
PostgreSQL utility | The program used to perform most database management on a PostgreSQL server. |
primary DNS server | The DNS server that contains a read/write copy of the zone. |
record | A line within a database table that represents a particular object. |
recursive query | A DNS resolution request that was resolved with the use of top-level DNS servers. |
relational database | A database that contains multiple tables that are linked by common fields. |
resource records | The records within a zone on a DNS server that provide name resolution for individual computers. |
reverse lookup | A DNS name resolution request whereby an IP address is resolved to an FQDN. |
secondary DNS server | A DNS server that contains a read-only copy of the zone. See also slave DNS server. |
Sendmail | The default e-mail server daemon used in Fedora 13. |
Server Message Block (SMB) | The protocol that Windows computers use to format file and printer sharing traffic on TCP/IP networks. |
slave DNS server | A DNS server that contains a read-only copy of the zone. |
smbclient command | A command that can be used to connect to a remote Windows or Samba server and transfer files. |
smbpasswd command | A command used to generate a Samba password for a user. |
SQL server | A server service that provides other programs and computers the ability to access a database. |
strata | The levels used within an NTP hierarchy that describe the relative position of a server to an original time source such as an atomic clock. |
Structured Query Language (SQL) | A language used by database servers to query, add, and modify the data within a database. |
table | A database structure that organizes data using records and fields. |
Time to Live (TTL) | The amount of time that a computer is allowed to cache name resolution information obtained from a DNS server. |
tzselect command | A command that can be used to change the time zone of a Linux computer. |
Very Secure FTP daemon (vsftpd) | The default FTP server program used in modern Linux distributions, including Fedora 13. |
Web page hit | A single HTTP request that is sent from a Web browser to a Web server. |
zone | A portion of the domain name space that is administered by one or more DNS servers. |
zone transfer | The process of copying resource records for a zone from a master to a slave DNS server. |