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Linux Operations and Administration Chapters 16-20
Vocab
21
Computer Networking
Undergraduate 3
11/18/2013

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Cards

Term
disk quotas
Definition
A linux feature used to specify the maximum disk space allocated to each user.
Term
hard limits
Definition
Infelxable disk quota settings that don't allow users to go past a specified limit.
Term
refresh rate
Definition
Number of times the display is refreshed per second.
Term
soft limits
Definition
Flexable disk quota settings that warn users when they're approaching the hard limit.
Term
X Window System
Definition
A system that provides a method for writing device-independent graphics and windowing software that can be transferred from one computer to another easily.
Term
Common UNIX Printing Systems (CUPS)
Definition
A system that provides a printing interface on a local network; used to convert files into data a printer can process.
Term
maps
Definition
Multicolumn NIS database storing key/value pairs that provide fast database access and speed up responses to client request for configuration information.
Term
Network Information Service (NIS)
Definition
A client/server protocol that centeralizes user and group IDS by providing database access so that network computers can share configuration information.
Term
NIS clients
Definition
All hosts in an NIS-based network; including the master and slave servers.
Term
NIS master server
Definition
The center of the NIS network; contains the authoratative or primary copy of host configuration information (NIS maps) and makes it available over the network.
Term
NIS slave servers
Definition
Servers that maintain a copy of the host configuration inforamtion stored on the master server for redundacy; aslo used to distribute the load evenly between NIS servers.
Term
print queue
Definition
A directory file where the printer daemon can store print jobs so that multiple users can use the same printer device.
Term
printer device
Definition
The physical printer that transfers a print job from a computer to actual hard copy.
Term
printer driver
Definition
The software used to manage a printer device.
Term
remote printer queue
Definition
A pritner queue located on a different host in the local network.
Term
Common Internet File System (CIFS)
Definition
The successor to SMB that allows users on different OSs to share resources across the network.
Term
Samba
Definition
An open-source tool that provides an interface between two OSs, such as Linux and Windows, by using SMB/CIFS.
Term
Server Message Block (SMB)
Definition
A protocol that gives client computers read and write access to a server on the network.
Term
address spoofing
Definition
An attack most often used on a packet-filter firewalls, which are configured to allow only known addresses to initiate connections; attackers forge their source IP addresses and cause damage just by sending packets randomly.
Term
brute-force attacks
Definition
In these attacks, potential intruders use every possible combination of characters to guess passwords or encryption keys until the correct on is found. 
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