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Operating Systems CH10
Chapter 10 terms Operating systems
24
Computer Science
Undergraduate 4
11/10/2012

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Term
Account Lockout
Definition
A security measure that prohibits logging on to a user account, such as one on a server, after a specified number of unsuccessful attempts.
Term
Container object
Definition
An entity used to group together resources such as an organizational unit, domain, or forest in Microsoft Active Directory.
Term
Directory service
Definition
A large container of network data and rsources, such as computers, printers, user accounts, and user groups, that (1) provides a central listing of resources and ways to quickly find specific resources, and (2) provides ways to access and manage network resources.
Term
Distribution Group
Definition
A list of Windows Server 2003/Server 2003 R2 and Server 2008/Server 2008 R2 users that enables one emial message to be sent to all users on the list. A distribution group is not used for security.
Term
Domain
Definition
In Active directory, this is a grouping of resources into a functional unit for management. The resources can be servers, workstations, shared disks and directories, and shared printers.
Term
Forest
Definition
An active Directory container that holds one or more trees.
Term
Group
Definition
A collection of computers and users where policies set for the group apply to all computers and users.
Term
GID
Group Identification Number
Definition
A unique number assigned to a UNIX/Linux group that distinguishes that group from all other groups on the same system.
Term
Home directory
Definition
A user work area in which the user stores data on a server and typically has control over whether to enable other server users to access his or her data. It is also called a home folder.
Term
Mapping
Definition
The process of atatching to a shared resource, such as a shared drive,and using it as though it is a local resource. for example, when a workstation operating system maps to the drive of another workstation, it can assign a drive letter to that drive and access it as though it is a local drive instead of a remote one.
Term
Mounted Volume
Definition
A shared drive in UNIX/Linux and MAC OS.
Term
Network file system
Definition
Enables file transfer and other shared services.
Term
RPC's
Remote procedure Calls
Definition
Enables services and software on one computer to use services and software on a different computer.
Term
Samba
Definition
Used by UNIX/Linux and MAC OS X systems, a utility that employs the Server Message Book (SMB) protocol, which is also used by Windows systems for sharing folders and printers. Samba enables UNIX/Linux and MAC OS X systems to access shared Windows resources.
Term
Security Group
Definition
A group of Windows server 2003/Server 2003 R2 and Server 2008/Server 2008 R2 users that is sued to assign access privileges, such as permissions, to objects and services.
Term
SMB
Server Message Block
Definition
A protocol mainly used for sharing folders, files, printers, and some node communication.
Term
Shadow File
Definition
A file in UNIX/Linux that contains critical information about user accounts, including the encrypted password for each account.
Term
Share
Definition
An object, such as a folder, drive, or printer that an operating system or directory service, such as Active directory, makes visible to other network users for access over a network.
Term
Share Points
Definition
Shared resources on a MAC OS X server.
Term
Tree
Definition
An Active Directory container that houses one or more domains.
Term
Trusted Domain
Definition
A domain granted security access to resources in another domain.
Term
Trusting Domain
Definition
A domain that allows another domain security access to its resources, such as servers.
Term
UID
User Identification Number
Definition
A number that is assigned to a UNIX/Linux user account as a way to distinguish that account from all others on the same system.
Term
Windows NT LAN Manager
Definition
An authentication protocol used in Windows Server 2003 and earlier.
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