MCSE Windows server 2003- P16

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MCSE Windows server 2003- P16: Windows Server 2003 is, of course, more secure, more reliable, more available, and easier to administer than any previous version of Windows. Let’s take a close look at the platform and how it compares to Microsoft Windows 2000. This lesson provides a brief overview of the Windows Server 2003 family, focusing on the differences among the product editions: Web Edition, Standard Edition, Enterprise Edition, and Datacenter Edition.

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Nội dung Text: MCSE Windows server 2003- P16

Appendix Terminal Server A-17 Remote Control Terminal Server allows an administrator to view or take control of a user’s session. This feature not only allows administrators to monitor user actions on a terminal server, but also acts like Remote Assistance, allowing a help desk employee to control a user’s ses sion and perform actions that the user is able to see as well. To establish remote control, both the user and the administrator must be connected to terminal server sessions. The administrator must open the Terminal Server Manager console from the Administrative tools group, right-click the user’s session, and choose Control. By default, the user will be notified that the administrator wishes to connect to the session, and can accept or deny the request. Important Remote Control is available only when using Terminal Server Manager within a terminal server session. You cannot establish remote control by opening Terminal Server Manager on your PC. Remote control settings include the ability to remotely view and remotely control a ses sion, as well as whether the user should be prompted to accept or deny the adminis trator’s access. These settings can be configured in the user account properties on the Remote Control tab, as shown in Figure A-13, and can be configured by the properties of the RDP-Tcp connection, which will override user account settings. Group Policy can also be used to specify remote control configuration. Figure A-13 The Remote Control tab of a user’s properties dialog box Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
A-18 Appendix Terminal Server In addition to enabling remote control settings, an administrator must have permis sions to establish remote control over the terminal server connection. Using the Per- missions tab of the RDP-Tcp Properties dialog box, you can assign the Full Control permission template or, by clicking Advanced, assign the Remote Control permission to a group, as shown in Figure A-14. Figure A-14 The Remote Control permission Review This appendix provides an overview of Terminal Server and the tools, technologies, and processes used to configure and, ultimately, troubleshoot the feature. The aim of this appendix, like the rest of this training kit, is to prepare you for the 70-290 certification exam. If you plan to deploy or support Terminal Server in your production network, be sure to refer to online help and the Microsoft Knowledge Base for additional detail. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary Numbers 802.11 Refers to a family of Institute of Electrical and Electronics Engineers (IEEE) specifications for wireless networking. 802.11a An extension to 802.11 that applies to wireless local area networks (WLANs) and provides up to 54 Mbps in the 5 GHz band. 802.11b An extension to 802.11 that applies to wirelessLANs and provides 11 Mbps transmission (with a fallback to 5.5, 2, and 1 Mbps) in the 2.4 GHz band. 802.11b is a 1999 ratification to the original 802.11 standard, allowing wireless functionality comparable to Ethernet. Also called Wi-Fi. 802.11g An extension to 802.11 that applies to wireless LANs and provides 54 Mbps transmission in the 2.4 GHz band. 802.11g is backward compatible with 802.11b, allowing the two to work together. A access control entry (ACE) An entry in an access control list (ACL) that defines the level of access for a user or group. access control list (ACL) A set of data associated with a file, directory, or other resource that defines the permissions users or groups have for accessing it. In Active Directory, the ACL is a list of access control entries (ACEs) stored with the object it protects. In Microsoft Windows NT, an ACL is stored as a binary value called a security descriptor. access token or security access token A collection of security identifiers (SIDs) that represent a user and that user’s group memberships. The security subsystem compares SIDs in the token to SIDs in an access control list (ACL) to determine resource access. account lockout A security feature that disables a user account if failed logons exceed a specified number in a specified period of time. Locked accounts cannot log on and must be unlocked by an administrator. Active Directory Beginning in Microsoft Windows 2000 Server and continuing in Windows Server 2003, Active Directory replaces the Windows NT collection of directory functions with functionality that integrates with and relies upon stan dards including Domain Name System (DNS), Lightweight Directory Access Proto col (LDAP), and Kerberos security protocol. G-1 Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-2 Glossary Active Directory–integrated zone A DNS (Domain Name System) zone stored in Active Directory so it has Active Directory security features and can be used for multimaster replication. Active Directory Service Interface (ADSI) A programming interface that provides access to Active Directory. ActiveX A loosely defined set of technologies that allows software components to interact with each other in a networked environment. ActiveX component Reusable software component that adheres to the ActiveX specification and can operate in an ActiveX–compliant environment. address A precise location where a piece of information is stored in memory or on disk. Also, the unique identifier for a node on a network. On the Internet, the code by which an individual user is identified. The format is username@hostname, where username is your user name, logon name, or account number, and host- name is the name of the computer or Internet provider you use. The host name might be a few words strung together with periods. Address Resolution Protocol (ARP) A Transmission Control Protocol/Internet Pro tocol (TCP/IP) and AppleTalk protocol that provides IP-address-to-MAC (media access control) address resolution for IP packets. Advanced Configuration Power Interface (ACPI) An industry specification, defin ing power management on a range of computer devices. ACPI compliance is nec essary for devices to take advantage of Plug and Play and power management capabilities. allocation unit The smallest unit of managed space on a hard disk or logical vol ume. Also called a cluster. anonymous FTP A way to use an FTP program to log on to another computer to copy files when you do not have an account on that computer. When you log on, enter anonymous as the user name and your e-mail address as the password. This gives you access to publicly available files. See also File Transfer Protocol (FTP). AppleTalk Local area network architecture built into Macintosh computers to con nect them with printers. A network with a Windows Server 2003 server and Mac intosh clients can function as an AppleTalk network with the use of AppleTalk network integration (formerly Services for Macintosh). Archive (A) attribute An attribute of each file that is used by backup utilities to determine whether or not to back up that file. The Archive attribute is set to TRUE whenever a file is created or modified. Differential and incremental backup jobs will back up files only if their archive attribute is TRUE. Associate To connect files having a particular extension to a specific program. When you double-click a file with the extension, the associated program is launched and the file you clicked is opened. In Windows, associated file extensions are usually called registered file types. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary G-3 Asynchronous Transfer Mode (ATM) A network technology based on sending data in cells or packets of a fixed size. It is asynchronous in that the transmission of cells containing information from a particular user is not necessarily periodic. attribute A characteristic. In Windows file management, it is information that shows whether a file is read-only, hidden, compressed, encrypted, ready to be backed up (archived), or should be indexed. audit policy Defines the type of security events to be logged. It can be defined on a server or an individual computer. authentication Verification of the identity of a user or computer process. In Windows Server 2003, Windows 2000, and Windows NT, authentication involves comparing the user’s security identifier (SID) and password to a list of authorized users on a domain controller. authoritative restore Specifies a type of recovery of Active Directory. When an authoritative restore is performed using the Backup Utility and Ntdsutil in the Directory Services Restore Mode, the directory or the specific object(s) in the directory that have been authoritatively restored are replicated to other domain controllers in the forest. See also non-authoritative restore. Automated System Recovery (ASR) A feature of Windows Server 2003 that allows an administrator to return a failed server to operation efficiently. Using the ASR Wizard of the Backup Utility, you create an ASR set which includes a floppy disk with a catalog of system files, and a comprehensive backup. When a server fails, boot with the Windows Server 2003 CD-ROM and press F2 when prompted to start Automated System Recovery. Automatic Updates A client-side component that can be used to keep a system up to date with security rollups, patches, and drivers. Automatic Updates is also the client component of a Software Update Services (SUS) infrastructure, which allows an enterprise to provide centralized and managed updates. B Background Intelligent Transfer Service (BITS) A service used to transfer files between a client and a Hypertext Transfer Protocol (HTTP) server. BITS intelli gently uses idle network bandwidth, and will decrease transfer requests when other network traffic increases. backup domain controller (BDC) In a Windows NT domain, a computer that stores a backup of the database that contains all the security and account informa tion from the primary domain controller (PDC). The database is regularly and automatically synchronized with the copy on the PDC. A BDC also authenticates logons and can be promoted to a PDC when necessary. In a Windows Server 2003 or Windows 2000 domain, BDCs are not required; all domain controllers are peers, and all can perform maintenance on the directory. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-4 Glossary backup media pool A logical set of backup storage media used by Windows Server 2003 and Windows 2000 Server Backup. bandwidth On a network, the transmission capacity of a communications channel stated in megabits per second (Mbps). For example, Ethernet has a bandwidth of 10 Mbps. Fast Ethernet has a bandwidth of 100 Mbps. basic disk A physical disk that is configured with partitions. The disk’s structure is compatible with previous versions of Windows and with several non-Windows operating systems. Basic Input/Output System (BIOS) The program used by a personal computer’s microprocessor to start the system and manage data flow between the operating system and the computer’s devices, such as its hard disks, CD-ROM, video adapter, keyboard, and mouse. binding A software connection between a network card and a network transport protocol such as Transmission Control Protocol/Internet Protocol (TCP/IP). BOOTP Used on Transmission Control Protocol/Internet Protocol (TCP/IP) networks to enable a diskless workstation to learn its own IP address, the location of a BOOTP server on the network, and the location of a file to be loaded into memory to boot the machine. This allows a computer to boot without a hard disk or a floppy disk. Stands for “Boot Protocol.” bottleneck Refers to the point of resource insufficiency when demand for computer system resources and services becomes extreme enough to cause performance degradation. broadcasting To send a message to all computers on a network simultaneously. See also multicasting. Browser service The service that maintains a current list of computers and provides the list to applications when needed. When a user attempts to connect to a resource in the domain, the Browser service is contacted to provide a list of avail- able resources. The lists displayed in My Network Places and Active Directory Users and Computers (among others) are provided by the Browser service. Also called the Computer Browser service. C Caching A process used to enhance performance by retaining previously-accessed information in a location that provides faster response than the original location. Hard disk caching is used by the File and Print Sharing for Microsoft Networks ser vice, which stores recently accessed disk information in memory for faster retrieval. The Remote Desktop Connection client can cache previously viewed screen shots from the terminal server on its local hard disk to improve perfor mance of the Remote Desktop Protocol (RDP) connection. catalog An index of files in a backup set. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary G-5 certificate A credential used to prove the origin, authenticity, and purpose of a pub lic key to the entity that holds the corresponding private key. certificate authority (CA) The service that accepts and fulfills certificate requests and revocation requests and that can also manage the policy-directed registration process a user completes to get a certificate. certificate revocation list (CRL) A digitally signed list (published by a certificate authority) of certificates that are no longer valid. child domain A domain located directly beneath another domain name (which is known as a parent domain). For example, Engineering.scribes.com is a child domain of scribes.com, the parent domain. Also called a subdomain. child object An object inside another object. For example, a file is a child object inside a folder, which is the parent object. Client Access License (CAL) The legal right to connect to a service or application. CALs can be configured per server or per device/per user. cluster A set of computers joined together in such a way that they behave as a single system. Clustering is used for network load balancing as well as fault tolerance. In data storage, a cluster is the smallest amount of disk space that can be allocated for a file. Cluster service The collection of software on each node that manages all cluster- specific activity. codec Technology that compresses and decompresses data, particularly audio or video. Codecs can be implemented in software, hardware, or a combination of both. common name (CN) The primary name of an object in a Lightweight Directory Access Protocol (LDAP) directory such as Active Directory. The CN must be unique within the container or organizational unit (OU) in which the object exists. concurrent Simultaneous. console tree The default left pane in a Microsoft Management Console (MMC) that shows the items contained in a console. container An Active Directory object that has attributes and is part of the Active Directory namespace. Unlike other objects, it does not usually represent some- thing concrete. It is a package for a group of objects and other containers. D delegate Assign administrative rights over a portion of the namespace to another user or group. Device Driver A program that enables a specific device, such as a modem, network adapter, or printer, to communicate with the operating system. Although a device might be installed on your system, Windows cannot use the device until you have Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-6 Glossary installed and configured the appropriate driver. Device drivers load automatically (for all enabled devices) when a computer is started, and thereafter run transparently. Device Manager An administrative tool that you can use to administer the devices on your computer. Using Device Manager, you can view and change device prop erties, update device drivers, configure device settings, and uninstall devices. digital signature An attribute of a driver, application, or document that identifies the creator of the file. Microsoft’s digital signature is included in all Microsoft-supplied drivers, providing assurance as to the stability and compatibility of the drivers with Windows Server 2003 and Windows 2000 Server. directory service A means of storing directory data and making it available to net- work users and administrators. For example, Active Directory stores information about user accounts, such as names, passwords, phone numbers, and so on, and enables other authorized users on the same network to access this information. disk quota A limitation set by an administrator on the amount of disk space available to a user. distinguished name (DN) In the context of Active Directory, “distinguished” means the qualities that make the name distinct. The DN identifies the domain that holds the object, as well as the complete path through the container hierarchy used to reach the object. Distributed file system (Dfs) A file management system in which files can be located on separate computers but are presented to users as a single directory tree. DNS name servers Servers that contain information about part of the Domain Name System (DNS) database. These servers make computer names available to queries for name resolution across the Internet. Also called domain name servers. domain A group of computers that share a security policy and a user account data- base. A Windows Server 2003 domain is not the same as an Internet domain. See also domain name. domain controller A server in a domain that accepts account logons and initiates their authentication. In an Active Directory domain, a domain controller controls access to network resources and participates in replication. domain functional level The level at which an Active Directory domain operates. As functional levels are raised, more features of Active Directory become avail- able. There are four levels: Windows 2000 mixed, Windows 2000 native, Windows Server 2003 interim, and Windows Server 2003. domain local group A local group used on ACLs only in its own domain. A domain local group can contain users and global groups from any domain in the forest, universal groups, and other domain local groups in its own domain. domain name In Active Directory, the name given to a collection of networked computers that share a common directory. On the Internet, the unique text name Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary G-7 that identifies a specific host. A machine can have more than one domain name, but a given domain name points to only one machine. Domain names are resolved to IP addresses by DNS name servers. Domain Name System (DNS) A service on Transmission Control Protocol/Internet Protocol (TCP/IP) networks (including the Internet) that translates domain names into IP addresses. This allows users to employ friendly names like FinanceServer or Adatum.com when querying a remote system, instead of using an IP address such as 192.168.1.10. domain naming master The one domain controller assigned to handle the addition or removal of domains in a forest. See also Operations Master. DWORD A data type consisting of four bytes in hexadecimal. Dynamic Data Exchange (DDE) Communication between processes implemented in the Windows family of operating systems. When programs that support DDE are running at the same time, they can exchange data by means of conversations. Conversations are two-way connections between two applications that transmit data alternately. dynamic disk A disk that is configured using volumes. Its configuration is stored in the Logical Disk Manager (LDM) database, and is replicated to other dynamic disks attached to the same computer. Dynamic disks are compatible only with Windows Server 2003, Windows XP, and Windows 2000. Dynamic Host Configuration Protocol (DHCP) A Transmission Control Protocol/ Internet Protocol (TCP/IP) protocol used to automatically assign IP addresses and configure TCP/IP for network clients. dynamic-link library (DLL) A program module that contains executable code and data that can be used by various programs. A program uses the DLL only when the program is active, and the DLL is unloaded when the program closes. E effective permissions The permissions that result from the evaluation of group and user permissions allowed, denied, inherited, and explicitly defined on a resource. The effective permissions determine the actual access for a security principal. enterprise Term used to encompass a business’s entire operation, including all remote offices and branches. environment variable A string of environment information such as a drive, path, or filename associated with a symbolic name. The System option in Control Panel or the Set command from the command prompt can be used to define environment variables. Ethernet A local area network (LAN) protocol. Ethernet supports data transfer rates of 10 Mbps and uses a bus topology and thick or thin coaxial, fiberoptic, or Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-8 Glossary twisted-pair cabling. A newer version of Ethernet called Fast Ethernet supports data transfer rates of 100 Mbps, and an even newer version, Gigabit Ethernet, sup- ports data transfer rates of 1000 Mbps. extended partition A nonbootable portion of a hard disk that can be subdivided into logical drives. There can be only a single extended partition per hard disk. Extensible Authentication Protocol (EAP) An extension to the Point-to-Point Pro tocol (PPP) that allows the use of arbitrary authentication methods for validating a PPP Connection. Extensible Markup Language (XML) An abbreviated version of the Standard Gen eralized Markup Language (SGML), it allows the flexible development of user- defined document types and provides a non-proprietary, persistent, and verifiable file format for the storage and transmission of text and data both on and off the Web. external trust A one-way or two-way trust for providing access to a Windows NT 4 domain or a domain located in another forest that is not joined by a forest trust. F failover An operation that automatically switches to a standby database, server, or network if the primary system fails or is temporarily shut down for servicing. In server clusters, the process of taking resources off one node in a prescribed order and restoring them on another node. fault tolerance The ability of a system to ensure data integrity when an unexpected hardware or software failure occurs. Many fault-tolerant computer systems mirror all operations—that is, all operations are done on two or more duplicate systems, so if one fails the other can take over. File Replication Service (FRS) The service responsible for ensuring consistency of the SYSVOL folder on domain controllers. FRS will replicate, or copy, any changes made to a domain controller’s SYSVOL to all other domain controllers. FRS can also be used to replicate folders in a Distributed File System (Dfs). File Transfer Protocol (FTP) A method of transferring one or more files from one computer to another over a network or telephone line. Because FTP has been implemented on a variety of systems, it’s a simple way to transfer information between usually incongruent systems such as a PC and a minicomputer. firewall A protective filter for messages and logons. An organization connected directly to the Internet uses a firewall to prevent unauthorized access to its net- work. See also proxy server. folder redirection An option in Group Policy to place users’ special folders, such as My Documents, on a network server. forest A group of one or more Active Directory trees that trust each other through two-way transitive trusts. All trees in a forest share a common schema, configuration, Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary G-9 and Global Catalog (GC). When a forest contains multiple trees, the trees do not form a contiguous namespace. Unlike trees, a forest does not need a distinct name. forest trust A transitive trust used to share resources between forests. Can be one- way or two-way. fully qualified domain name (FQDN) A domain name that includes the names of all network domains leading back to the root to clearly indicate a location in the domain namespace tree. An example of an FQDN is Accts.finance.adatum.com or Sales.europe.microsoft.com. G gateway A device used to connect networks using dissimilar protocols so that infor mation can be passed from one to another. Global Catalog (GC) Contains a full replica of all Active Directory objects in its host domain plus a partial replica of all directory objects in every domain in the forest. A GC contains information about all objects in all domains in the forest, so finding information in the directory does not require unnecessary queries across domains. A single query to the GC produces the information about where the object can be found. global group A group that can be used in its own domain and in trusting domains. However, it can contain user accounts and other global groups only from its own domain. globally unique identifier (GUID) Part of the identifying mechanism generated by Active Directory for each object in the directory. If a user or computer object is renamed or moved to a different name, the security identifier (SID), relative dis tinguished name (RDN), and distinguished name (DN) will change, but the GUID will remain the same. GUID partition table (GPT) The storage location for disk configuration information for disks used in 64-bit versions of Windows. Group Policy Setting of rules for computers and users in Windows Server 2003 and Windows 2000 Server. Group Policy is able to store policies for file deployment, application deployment, logon/logoff scripts, startup/shutdown scripts, domain security, Internet Protocol security (IPSec), and so on. Group Policy Object (GPO) A collection of policies stored in two locations: a Group Policy container (GPC) and a Group Policy template (GPT). The GPC is an Active Directory object that stores version information, status information, and other policy information (for example, application objects). The GPT is used for file-based data and stores software policy, script, and deployment information. The GPT is located in the system volume folder of the domain controller. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-10 Glossary H headless server A server without a monitor, keyboard, mouse, or video card, which is administered remotely. hive One of five sections of the registry. Each hive is a discrete body of keys, sub- keys, and values that record configuration information for the computer. Each hive is a file that can be moved from one system to another but can be edited only by using the Registry Editor. host Any device on the network that uses TCP/IP. A host is also a computer on the Internet you might be able to log on to. You can use FTP to get files from a host computer and use other protocols (such as Telnet) to make use of the host computer. hosts file A local ASCII text file that maps host names to IP addresses. Each line rep resents one host, starting with the IP address, one or more spaces, and then the host’s name. hypertext A system of writing and displaying text that enables the text to be linked in multiple ways, available at several levels of detail. Hypertext documents can also contain links to related documents, such as those referred to in footnotes. Hypertext Markup Language (HTML) A language used for writing pages for use on the Internet or an intranet. HTML allows text to include codes that define fonts, layout, embedded graphics, and hypertext links. Hypertext Transfer Protocol (HTTP) The method by which Web pages are trans ferred over the network. I identity store A database of security identities, or security principals. Active Direc tory is the identity store for a Windows Server 2003 domain. inheritance The process through which permissions are propagated from a parent object to its children. Inheritance is at work in Active Directory and on disk vol umes formatted with NTFS. instance The most granular level of performance counter. A performance object, such as LogicalDisk, has counters, such as % Free Space. That counter may have instances, representing specific occurrences of that counter, for example the free space on disk volume C:\ and disk volume D:\. IntelliMirror A suite of technologies that allows a complete operating environment to follow the user to other computers, as well as offline. Components include the user’s profiles, data, and applications. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary G-11 Internet Authentication Service (IAS) The Microsoft implementation of Remote Authentication Dial-In User Service (RADIUS), an authentication and accounting system used by many Internet Service Providers (ISPs). When a user connects to an ISP using a username and password, the information is passed to a RADIUS server, which checks that the information is correct, and then authorizes access to the ISP system. Internet Control Message Protocol (ICMP) A protocol used to report problems encountered with the delivery of data, such as unreachable hosts or unavailable ports. ICMP is also used to send a request packet to determine whether a host is available. The receiving host sends back a packet if it is available and functioning. See also ping. Internet Printing Protocol (IPP) A protocol that allows a client to send a job to a printer over the Internet or an intranet. The communication between the client and the printer is encapsulated in HTTP. Internet Protocol (IP) The inter-network layer protocol used as a basis of the Inter- net. IP enables information to be routed from one network to another in packets and then reassembled when they reach their destination. Internet Protocol version 6 (IPv6) A new version of Internet Protocol supported in Windows Server 2003. The current version of IP is version 4, also known as IPv4. IPv6, formerly called IP—The Next Generation (IPng), is an evolutionary upgrade and will coexist with version 4 for some time. Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX) Trans- port protocols used in Novell NetWare networks. interrupt request (IRQ) One of a set of possible hardware interrupts, identified by a number. The number of the IRQ determines which interrupt handler will be used. Internet Protocol security (IPSec) An Internet Engineering Task Force (IETF) stan dard that provides authentication and encryption over the Internet. IPSec is widely used with virtual private networks (VPNs). IP address A 128-bit number, usually represented as a four-part decimal separated by periods (for example, 192.168.1.10) that uniquely identifies a machine on the Internet. Every machine on the Internet has a unique IP address. K Kerberos An identity-based security system developed at the Massachusetts Institute of Technology (MIT) that authenticates users at logon. It works by assigning a unique key, called a ticket, to each user who logs on to the network. The ticket is then embedded in messages to identify the sender of the message. The Kerberos security protocol is the primary authentication mechanism in Windows Server 2003 and Windows 2000 Server. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-12 Glossary kernel The part of the executive (or operating system) that manages the processor. The kernel performs thread scheduling and dispatching, interrupt and exception handling, and multiprocessor synchronization. L Layer Two Tunneling Protocol (L2TP) An extension to the Point-to-Point Protocol (PPP) used in conjunction with IPSec to provide secure VPN connections. license group A group of users or devices that shares one or more client access licenses (CALs). License groups are administered using the Licensing tool in the Administrative Tools folder. Lightweight Data Interchange Format (LDIF) An ASCII file format used to transfer data between Lightweight Directory Access Protocol (LDAP) directory services. Lightweight Directory Access Protocol (LDAP) A protocol used to access a direc tory service. LDAP is a simplified version of the Directory Access Protocol (DAP), which is used to gain access to X.500 directories. LDAP is the primary access pro tocol for Active Directory. LISTSERV A family of programs that manage Internet mailing lists by distributing messages posted to the list, and adding and deleting members automatically. Lmhosts An ASCII text file like Hosts but used to associate IP addresses to host names inside a network. To remember which is which, remember Lmhosts as LAN Manager Hosts. local area network (LAN) A group of connected computers, usually located close to one another (such as in the same building or the same floor of the building) so that data can be passed among them. log on The act of entering into a computer system; for example, “Log on to the net- work and read your e-mail.” Logical Disk Manager (LDM) The service responsible for maintaining configuration information for disks that are configured as dynamic disks. logical printer The representation of a physical printer. A logical printer is created on a Windows computer and includes the printer driver, printer settings, print defaults, and other configuration information that controls when and how a print job is sent to the printer. logon script Typically a batch file set to run when a user logs on or logs off a sys tem. A logon script is used to configure a user’s initial environment. A logoff script is used to return a system to some predetermined condition. Either script can be assigned to multiple users individually or through Group Policy. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary G-13 M master boot record (MBR) The first sector on a hard disk where the computer gets its startup information. The MBR contains the partition table for the computer and a small program called the master boot code. master file table (MFT) A special system file on an NT file system (NTFS) volume that consists of a database describing every file and subdirectory on the volume. media access control (MAC) address A unique 48-bit number assigned to network interface cards by the manufacturer. MAC addresses are used for mapping in TCP/ IP network communication. media pool A logical collection of removable media sharing the same management policies. member server A server that is part of a domain but is not a domain controller. Member servers can be dedicated to managing files or printer services or other functions. A member server does not verify logons or maintain a security database. mirror 1. Two partitions on two hard disks (also called RAID-1) configured so that each will contain identical data to the other. If one disk fails, the other contains the data and processing can continue. 2. A File Transfer Protocol (FTP) server that provides copies of the same files as another server. Some FTP servers are so pop ular that other servers have been set up to mirror them and spread the FTP load to more than one site. MMC (Microsoft Management Console) A framework for hosting administrative tools called snap-ins. A console might contain tools, folders, or other containers, Web pages, and other administrative items. These items are displayed in the left pane of the console, called a console tree. A console has one or more windows that can provide views of the console tree. See also snap-in. multicasting Simultaneously sending a message to more than one destination on a network. Multicasting is distinguished from broadcasting in that multicasting sends to only selected recipients. multilink dialing Combining two or more physical communication links into a sin gle logical link to increase available bandwidth. multimaster replication A feature of Active Directory, multimaster replication auto matically propagates every object (such as users, groups, computers, domains, organization units, security policies, and so on) created on any domain controller to each of the other participating domain controllers. All domain controllers con tain the same directory data, so the domain does not depend on a single source for directory information. multitasking Computer legerdemain by which tasks are switched in and out of the processor so quickly that it appears they are all happening at once. The success of Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-14 Glossary a multitasking system depends on how well the various tasks are isolated from one another. multithreading The simultaneous processing of several threads inside the same program. Because several threads can be processed in parallel, one thread does not have to finish before another one can start. N name resolution The process of mapping a name to its corresponding IP address. namespace A name or group of names defined according to a naming convention; any bounded area in which a given name can be resolved. Active Directory is pri marily a namespace, as is any directory service. The Internet uses a hierarchical namespace that partitions names into categories known as top-level domains, such as .com, .edu, and .gov. native mode In Windows 2000 domains, the condition of a domain when all domain controllers have been upgraded to Windows 2000 and the administrator has enabled native mode operation. In Windows Server 2003 domains, where there are no Windows 2000 or Windows NT 4 domain controllers, native mode is simply called Windows Server 2003 mode or functional level. See also domain functional level. Net Logon service A service that accepts logon requests from any client and pro vides authentication from the Security Accounts Manager (SAM) database of accounts. NetBIOS Enhanced User Interface (NetBEUI) A small and fast protocol that requires little memory but can be routed only by using token ring routing. Remote locations linked by routers cannot use NetBEUI to communicate. network Two or more computers connected for the purpose of sharing resources. Network Access Server (NAS) A server that accepts Point-to-Point Protocol connec tions and places them on the network served by NAS. Network Address Translation (NAT) A technology that enables a local-area net- work (LAN) to use one set of Internet Protocol (IP) addresses for internal traffic and a second set of addresses for external traffic. Network Load Balancing (NLB) A technology that allows for efficient utilization of multiple network cards. Network News Transfer Protocol (NNTP) A protocol defined for distribution, inquiry, retrieval, and posting of news articles on the Internet. newsgroup On the Internet, a distributed bulletin board system about a particular topic. USENET News (also known as Netnews) is a system that distributes thou- sands of newsgroups to all parts of the Internet. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary G-15 node A location on a tree structure with links to one or more items below it. On a local area network (LAN), a device that can communicate with other devices on the network. In clustering, a computer that is a member of a cluster. non-authoritative restore When a domain controller’s system state is restored, Active Directory is restored. When the domain controller is restarted, the informa tion in the directory, which is only as recent as the date of the backup set, is brought up to date through normal replication processes between the restored domain controller and its replication partners. NTFS file system (NTFS) The native file system for Windows Server 2003, Windows 2000, and Windows NT. Supports long filenames, a variety of permissions for sharing files to manage access to files and folders, and a transaction log that allows the com pletion of any incomplete file-related tasks if the operating system is interrupted. O object A particular set of attributes that represents something concrete, such as a user, a printer, or an application. The attributes hold data describing the thing that is identified by the object. Attributes of a user might include the user’s given name, surname, and e-mail address. The classification of the object defines which types of attributes are used. For example, the objects classified as users might allow the use of attribute types like common name, telephone number, and e-mail address, whereas the object class of organization allows for attribute types like organization name and business category. An attribute can take one or more values, depending on its type. object identifier (OID) A globally unique identifier (GUID), which is assigned by the Directory System Agent (DSA) when the object is created. The GUID is stored in an attribute, the object GUID, which is part of every object. The object GUID attribute cannot be modified or deleted. When storing a reference to an Active Directory object in an external store (for example, a database), you should use the object GUID because, unlike a name, it will not change. Operations Master A domain controller that has been assigned Active Directory operations that are single master—that is, operations that are not permitted to occur at different places in the network at the same time. Some single-master operations include schema modification, domain naming, and the relative identi fier (RID) allocator. organizational unit (OU) A container object in Active Directory used to separate computers, users, and other resources into logical units. An organizational unit is the smallest entity to which Group Policy can be linked. It is also the smallest scope to which administration authority can be delegated. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-16 Glossary P packet The basic unit of information sent over a network. Each packet contains the destination address, the sender’s address, error-control information, and data. The size and format of a packet depend on the protocol being used. page A document, or collection of information, available over the Web. A page can contain text, graphics, video, and sound files. Also can refer to a portion of mem ory that the virtual memory manager can swap to and from a hard disk. paging A virtual memory operation in which pages are transferred from memory to disk when memory becomes full. When a thread accesses a page that’s not in memory, a page fault occurs and the memory manager uses page tables to find the page on disk and then loads the page into memory. PDC Emulator master The domain controller that services network clients that do not have Active Directory client software installed and replicates changes to any Windows NT backup controllers. The PDC emulator master also handles authen tication requests for accounts with recently changed passwords, if the change has not been replicated yet to the entire domain. Ping An Internet Protocol (IP) utility that checks to see whether another computer is available and functioning. It sends a short message to which the other computer automatically responds. If the other computer does not respond to the ping, it is often an indication that communications between the two computers cannot be established at the IP level. point of presence (POP) A physical site in a geographic area where a network access provider, such as a telecommunications company, has equipment to which users connect. The local telephone company’s central office in a particular area is also sometimes referred to as their POP for that area. Point-to-Point Tunneling Protocol (PPTP) A protocol that provides router-to- router and host-to-network connections over a telephone line (or a network link that acts like a telephone line). See also Serial Line Internet Protocol (SLIP). port From a computer system perspective, a physical connection point on a com puter where you can connect devices that pass data into and out of a computer. For example, a printer is typically connected to a parallel port (also called an LPT port), and a modem is typically connected to a serial port (also called a COM port). From a network perspective, a port is a numbered communication channel through which information passes from one computer system to another. Terminal Services traffic, for example, communicates on port 3389. Post Office Protocol (POP) A protocol by which a mail server on the Internet lets you access your mail and download it to a computer. Most people refer to this protocol with its version number (POP2, POP3, and so on) to avoid confusing it with points of presence (POPs). Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
Glossary G-17 primary domain controller (PDC) In a Windows NT domain, the server that authenticates domain logons and maintains the security policy and master data- base for a domain. In a Windows 2000 or Windows Server 2003 domain, running in mixed mode, one of the domain controllers in each domain is identified as the PDC emulator master for compatibility with down-level clients and servers. primary partition A portion of the hard disk that’s been marked as a potentially bootable logical drive by an operating system. MS-DOS can support only a single primary partition. Master boot record disks can support four primary partitions. Computers with the Intel Itanium processor use a GUID partition table that sup- ports up to 128 primary partitions. profile Loaded by the system when a user logs on, the profile defines a user’s envi ronment, including network settings, printer connections, desktop settings, and program items. proxy server A server that receives Web requests from clients, retrieves Web pages, and forwards them back to clients. Proxy servers can dramatically improve perfor mance for groups of users by caching retrieved pages. Proxy servers also provide security by shielding the IP addresses of internal clients from the Internet. public-key cryptography A method of secure transmission in which two different keys are used—a public key for encrypting data and a private key for decrypting data. Q Quality of Service (QoS) A set of standards for assuring the quality of data transmis sion on a network. Queue Length A performance counter that measures the number of instructions that are waiting to be processed by an object such as the Processor or Physical Disk. If the Queue Length is greater than 2 or 3 for an extended period of time, it is a reflection that the system’s resources are not sufficient for the demands being placed on that system. R realm trust Used to connect between a non-Windows Kerberos realm and a Windows Server 2003 domain. Realm trusts can be transitive or non-transitive, one-way, or two-way. Recovery Console A command-line interface that provides limited access to the sys tem for troubleshooting purposes. The Recovery Console can be launched by booting with the Windows Server 2003 CD-ROM and, when prompted, pressing R for Repair. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.
G-18 Glossary redundant array of independent disks (RAID) A range of disk management and striping techniques to implement fault tolerance. relative distinguished name (RDN) Active Directory uses the concept of a relative distinguished name (RDN), which is the part of the distinguished name that is an attribute of the object itself. relative identifier (RID) The part of the security identifier (SID) that is unique to each object. Remote Access Service (RAS) Allows users to connect from remote locations and access their networks for file and printer sharing and e-mail. The computer initiat ing the connection is the RAS client; the answering computer is the RAS server. Remote Assistance Allows for a novice user to use Windows Messenger to request personal, interactive help from an expert user. When the help request is accepted and the remote session negotiated, the expert is able to view and, if allowed by the novice, control the desktop. Remote Authentication Dial-In User Service (RADIUS) A security authentication system used by many Internet service providers (ISPs). A user connects to the ISP and enters a user name and password. This information is verified by a RADIUS server, which then authorizes access to the ISP system. Remote Desktop for Administration A technology based on Terminal Services that allows up to two remote connections to a server for remote administration purposes. In Windows 2000, this was known as Terminal Server in Remote Admin istration mode. Remote Installation Services (RIS) Allows clients to boot from a network server and use special preboot diagnostic tools installed on the server to automatically install a client operating system. Removable Storage Management (RSM) system A feature of Windows Server 2003 that interfaces with robotic changers and media libraries, enables multiple applications to share local libraries and tape or disk drives, and controls remov able media within a single-server system. replication On network computers, enables the contents of a directory, designated as an export directory, to be copied to other directories, called import directories. Active Directory changes are replicated to all domain controllers on a regular schedule. Requests for Comments (RFCs) An evolving collection of information that details the functions within the TCP/IP family of protocols. Some RFCs are official docu ments of the Internet Engineering Task Force (IETF), defining the standards of TCP/IP and the Internet, whereas others are simply proposals trying to become standards, and others fall somewhere in between. Some are tutorial in nature, whereas others are quite technical. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark.