Microsoft Internet & Networking Dictionary

Microsoft Internet & Networking Dictionary

n. A groupware application that transforms Lotus Notes into an application and messaging server. See also Lotus Notes.

Lotus Notes

n. A groupware application introduced in 1988 by Lotus Development Corporation and now owned by IBM. Lotus Notes combines e-mail, calendar management, group scheduling, contact and task management, newsgroup access, and Web browsing capability (through the integration of Microsoft Internet Explorer) in one client application. Lotus Notes also offers search capabilities across multiple formats and file types on a network or the Web.

LU

n. Acronym for logical unit. In an IBM SNA network, a point denoting the beginning or end of a communications session. See also SNA.

LUG

n. Acronym for Linux Users Group. See user group.

lurk

vb. To receive and read articles or messages in a newsgroup or other online conference without contributing to the ongoing exchange.

lurker

n. A person who lurks in a newsgroup or other online conference. See also lurk. Compare netizen.

LVS

n. Acronym for Linux Virtual Server. A high-performance open source server that handles connections from clients and passes them on to a cluster of real servers. LVS receives incoming packets and forwards them to the proper back-end server. LVS is typically used to build scalable Web, mail, or other network services. Also called: ipvs. See also layer 4 switching.

Lycos

n. A Web search engine and directory that provides summaries of pages matching search requests. In addition, the Lycos site offers categorized directories of sites, reviews of selected sites, and services for finding names, viewing maps, and so on.

Lynx

n. A text-only Web browser program for UNIX platforms.

M: MAC—my two cents

MAC

n. Acronym for Media Access Control. In the IEEE 802.x specifications, the lower of two sublayers that make up the ISO/OSI data link layer. The MAC manages access to the physical network, delimits frames, and handles error control. See also IEEE 802.x, LLC.

MacBinary

n. A file transfer protocol used to preserve coding for Macintosh-produced files stored in nonMacintosh computers, containing the file’s resource fork (contains information such as program code, font data, digitized sound, or icons), data fork (contains user-supplied information such as the text of a word-processing document), and the Macintosh standard interface (called Finder) information block.

Mac OS

Microsoft Internet & Networking Dictionary

n. Short for Macintosh operating system. The name given to the Macintosh operating system, beginning with version 7.5 in September 1994, when Apple started licensing the software to other computer manufacturers. See also Macintosh.

macrocontent

n. The primary text or other content of a Web page. Compare microcontent.

macro virus

n. A virus that is written in a macro language associated with an application. The macro virus is carried by a document file used with that application and executes when the document is opened.

MacTCP

n. A Macintosh extension that allows Macintosh computers to use TCP/IP. See also TCP/IP.

MADCAP

n. See multicast address dynamic client allocation protocol.

MAE

n. Acronym for Metropolitan Area Exchange. One of the Internet exchange points operated by MCI WorldCom, through which Internet service providers (ISPs) connect in order to exchange data. The two largest MAEs, MAE East (outside Washington, D.C.) and MAE West (near San Jose, California) are major national and international network interconnect points; more than half of all traffic through the Internet travels through one or both of these points. MCI WorldCom also operates smaller, regional MAEs in Chicago, Dallas, Houston, Los Angeles, New York, Paris, and Frankfurt. See also backbone (definition 1), ISP.

Magellan

n. A Web directory. Named for the Portuguese explorer, Magellan reviews and rates all Web sites it lists. Published by the McKinley Group, Magellan is now owned by Excite, Inc.

mailbomb1

n. An excessively large amount of e-mail data (a very large number of messages or one very large message) sent to a user’s e-mail address in an attempt to make the user’s mailer program crash or to prevent the user from receiving further legitimate messages. See also e-mail1 (definition 1). Compare letterbomb.

mailbomb2

vb. To send a mailbomb to a user. One person might mailbomb a user with a single enormous message; a large number of users might mailbomb an unpopular person by simultaneously sending messages of normal size.

mailbot

n. A program that automatically responds to e-mail messages or performs actions based on commands within the messages. A mailing list manager is one example. See also mailing list manager.

mailbox

n. A disk storage area assigned to a network user for receipt of e-mail messages. See also e- mail1 (definition 1).

mail digest

n. See digest (definition 2).

mailer-daemon

n. A program used to transport e-mail between hosts on a network. See also daemon.

Microsoft Internet & Networking Dictionary

mail header

n. A block of text at the top of an e-mail message containing such information as the addresses of the sender and recipients, the date and time sent, the address to which a reply is to be sent, and the subject. The mail header is used by an e-mail client or program. See also e-mail1 (definition 1).

mailing list

n. A list of names and e-mail addresses that are grouped under a single name. When a user places the name of the mailing list in a mail client’s To: field, the client sends the message to the machine where the mailing list resides, and that machine automatically sends the message to all the addresses on the list (possibly allowing a moderator to edit it first). See also LISTSERV, mailing list manager, Majordomo, moderator.

mailing list manager

n. Software that maintains an Internet or intranet mailing list. The mailing list manager accepts messages posted by subscribers; sends copies of the messages (which may be edited by a moderator) to all the subscribers; and accepts and processes user requests, such as to subscribe or to unsubscribe to the mailing list. The most commonly used mailing list managers are LISTSERV and Majordomo. See also LISTSERV, mailing list, Majordomo, moderator.

mail merge

n. A mass-mail facility that takes names, addresses, and sometimes pertinent facts about recipients and merges the information into a form letter or another such basic document.

mail reflector

n. A newsgroup that consists simply of the messages posted to a mailing list translated into newsgroup format.

mailto

n. A protocol designator used in the HREF of a hyperlink that enables a user to send e-mail to someone. For instance, Anne E. Oldhacker has the e-mail address aeo@baz.foo.com and an HTML document contains the code <A HREF=“mailto:aeo@baz.foo.com”>E-mail Anne!</A>. If a user clicks on the hyperlink “E-mail Anne!”, the user’s e-mail application is launched and the user can send e-mail to her without knowing her actual e-mail address. See also e-mail1 (definition 1), HTML, hyperlink.

mainframe computer

n. A high-level, typically large and expensive computer designed to handle intensive computational tasks. Mainframe computers are characterized by their ability to simultaneously support many users connected to the computer by terminals. The name is derived from “main frame,” the cabinet originally used to house the processing unit of such computers. See also supercomputer.

Majordomo

n. The name of a popular software program that manages and supports Internet mailing lists. See also mailing list, mailing list manager.

major geographic domain

n. A two-character sequence in an Internet domain name address that indicates the country/region in which a host is located. The major geographic domain is the last part of the domain name address, following the subdomain and domain codes; for example, uiuc.edu.us indicates a host at the University of Illinois in the United States, whereas cam.ac.uk indicates a host at the University of Cambridge in the United Kingdom. The code .us, which indicates a domain in the United States, is usually omitted. Also called: country code. See also DNS (definition 1), domain name address.

Microsoft Internet & Networking Dictionary

Make Changes

n. The Macintosh-style permission that gives users the right to make changes to a folder’s contents; for example, modifying, renaming, moving, creating, and deleting files. When AppleTalk network integration translates access privileges into permissions, a user who has the Make Changes privilege is given Write and Delete permissions. See also permission.

malicious mobile code

n. A virus or other destructive program that takes advantage of security weaknesses in wireless transmission systems. Malicious mobile code may affect computers, PDAs, Internet-capable digital phones, and other wireless networking devices.

malware

n. Software created and distributed for malicious purposes, such as invading computer systems in the form of viruses, worms, or innocent-seeming plug-ins and extensions that mask other destructive capabilities. Also called: malicious software.

MAN

n. Acronym for metropolitan area network. A high-speed network that can carry voice, data, and images at up to 200 Mbps or faster over distances of up to 75 km. Based on the network architecture, the transmission speed can be higher for shorter distances. A MAN, which can include one or more LANs as well as telecommunications equipment such as microwave and satellite relay stations, is smaller than a wide area network but generally operates at a higher speed. Compare LAN, WAN.

managed service provider

n. A business that supplies remote access services to individuals and enterprises. Managed service providers offer remote connections, network management, user support, security, and applications hosting. Acronym: MSP. Compare ISP.

Management and Monitoring Tools

n. Software components that include utilities for network management and monitoring, along with services that support client dialing and the updating of client phone books. Also included is the Simple Network Management Protocol (SNMP). See also SNMP.

Management Information Base

n. A set of objects that represents various types of information about a device, used by a network management protocol (for example, SNMP) to manage the device. Because different network management services are used for different types of devices and protocols, each service has its own set of objects. Acronym: MIB. See also service, SNMP.

management information system

n. A computer-based system for processing and organizing information so as to provide various levels of management within an organization with accurate and timely information needed for supervising activities, tracking progress, making decisions, and isolating and solving problems. Acronym: MIS.

mandatory user profile

n. A user profile that is not updated when the user logs off. It is downloaded to the user’s desktop each time the user logs on, and it is created by an administrator and assigned to one or more users to create consistent or job-specific user profiles. See also local user profile, roaming user profile, user profile.

man-in-the-middle attack

n. A form of attack in which the intruder intercepts messages between parties in a public key exchange. Each party’s messages are diverted to the intruder, who may alter them before

Microsoft Internet & Networking Dictionary

sending them on. The parties on each end of the exchange remain unaware that their messages are being intercepted and modified. Also called: bucket brigade attack.

manual link

n. A link that requires you to take action to update your data after the data in the source document changes.

MAPI

n. Acronym for Messaging Application Programming Interface. The Microsoft interface specification that allows different messaging and workgroup applications (including e-mail, voice mail, and fax) to work through a single client, such as the Exchange client included with Windows 95 and Windows NT.

markup language

n. A set of codes in a text file that instructs a computer how to format the file on a printer or video display or how to index and link its contents. Examples of markup languages are Hypertext Markup Language (HTML) and Extensible Markup Language (XML), which are used in Web pages, and Standard Generalized Markup Language (SGML), which is used for typesetting and desktop publishing purposes and in electronic documents. Markup languages of this sort are designed to enable documents and other files to be platform-independent and highly portable between applications. See also HTML, SGML, XML.

marquee

n. A nonstandard HTML extension that causes scrolling text to appear as part of a Web page. Currently, marquees are viewable only with Internet Explorer. See also HTML, Internet Explorer, Web page.

marquee component

n. A region on a page that displays a horizontally scrolling text message.

master file

n. In a set of database files, the file containing more or less permanent descriptive information about the principal subjects of the database, summary data, and one or more critical key fields. For example, customers’ names, account numbers, addresses, and credit terms might be stored in a master file. Compare transaction file.

MathML

n. Acronym for Mathematical Markup Language. An XML application for describing mathematical notation and capturing both its structure and content. The goal of MathML is to enable mathematics to be served, received, and processed on the Web, just as HTML has enabled this functionality for text.

MAU

n. Acronym for Multistation Access Unit. A hub device in a token ring network that connects computers in a physical hub-and-spokes arrangement but uses the logical ring required in token ring networks. Also called: MSAU. See also hub, token ring network.

MBONE or Mbone

n. Short for multicast backbone. A small set of Internet sites, each of which can transmit real-time audio and video simultaneously to all the others. MBONE sites are equipped with special software to send and receive packets at high speed using the IP one-to-many multicasting protocol. The MBONE has been used for video conferencing and even for a Rolling Stones concert in 1994. See also RealAudio.

MCF

n. See Meta-Content Format.

Microsoft Internet & Networking Dictionary

m-commerce

n. Short for mobile commerce. M commerce involves the use of personal digital assistants (PDAs), digital phones, and other wireless handheld devices equipped with microbrowsers for the online buying and selling of goods. M-commerce is distinguished from other electronic commerce by the level of portability. Wireless Application Protocol (WAP) standards form the foundation of m-commerce technology, which takes advantage of smart phone capabilities with e-mail, fax, Internet, and phone in one mobile unit. See also microbrowser, Wireless Application Protocol.

MCP

n. Acronym for Microsoft Certified Professional. A basic certification from Microsoft that verifies an individual’s ability to successfully implement a Microsoft product or technology as part of a solution for an organization. The MCP certification is often used as a building block for acquiring additional certifications in specialized skill areas such as databases, programming languages, and Web development.

MCSA

n. Acronym for Microsoft Certified Systems Administrator. A certification from Microsoft that verifies an individual’s ability to implement, manage, and troubleshoot existing Microsoft Windows and Windows .NET network and system environments. See also MCP.

MCSD

n. Acronym for Microsoft Certified Solution Developer. A certification from Microsoft that verifies an individual’s ability to use Microsoft development tools, technologies, and platforms to design and develop business solutions. See also MCP.

MCSE

n. Acronym for Microsoft Certified System Engineer. A certification from Microsoft that verifies an individual’s ability to analyze business requirements and then design and implement business solutions with Microsoft Windows platforms and server software. See also MCP.

Media Access Control n. See MAC.

media filter

n. 1. A device used with local area networks (LANs) as an adapter between two different types of media. For example, an RJ-45 connector might be used between coaxial cable and unshielded twisted pair (UTP) cables. Media filters are similar in function to transceivers. As with many components to LANs, manufacturers often choose different names for similar products, so a LAN expert is needed to decide which media filters are required for a particular LAN. See also coaxial cable, LAN, transceiver, UTP. 2. A device added to data networks to filter out electronic noise from the environment. For example, a media filter might be added to an Ethernet network based on coaxial cabling to prevent data loss from interference by nearby electronic equipment. See also coaxial cable, Ethernet (definition 1).

media stream

n. A continuous sequence of audio or audio-and-video through a network.

Melissa

n. A macro virus that affects Word files in Microsoft Office 97 and Office 2000 and first appeared in the spring of 1999. Melissa is delivered as an attachment to an e-mail with the subject line “An Important Message From <user name>,” a message beginning “Here is that document you asked forÖ,” or both. When the attachment is opened, the virus propagates (if Microsoft Outlook is installed) by sending itself to the first 50 e-mail addresses in the user’s Outlook address book. On the infected machine, the virus also changes the registry, infects the Normal.dot Word template (which, in turn, infects new documents), and, in Office 2000, disables the Word macro virus

Microsoft Internet & Networking Dictionary

warning. Although the Melissa virus does not destroy data, it can affect e-mail performance through the increased volume of messages. If an infected document is open at a time when the day of the month is the same as the minute value of the current time, the virus inserts the text “Twenty-two points, plus triple-word-score, plus fifty points for using all my letters. Game’s over. I’m outta here” at the current location of the cursor. The virus was named after an acquaintance of the hacker who developed it.

meltdown

n. 1. The complete collapse of a computer network caused by a higher level of traffic than the network can support. The term refers, by analogy, to the accidental melting down of a nuclear reactor core. 2. Colloquially, the breakdown of a person, usually in a job situation, caused by overwork, stress, or failure.

mesh network

n. A communications network having two or more paths to any node.

message

n. 1. In communications, a unit of information transmitted electronically from one device to another. A message can contain one or more blocks of text as well as beginning and ending characters, control characters, a software-generated header (destination address, type of message, and other such information), and error-checking or synchronizing information. A message can be routed directly from sender to receiver through a physical link, or it can be passed, either whole or in parts, through a switching system that routes it from one intermediate station to another. See also frame (definition 1), frame (definition 2), header, message switching, network, packet (definition 1), packet switching, synchronous transmission. 2. In software, a piece of information passed from the application or operating system to the user to suggest an action, indicate a condition, or inform that an event has occurred. 3. In message-based operating environments, such as Windows, a unit of information passed among running programs, certain devices in the system, and the operating environment itself.

message header

n. A sequence of bits or bytes at the beginning of a message that usually provides a timing sequence and specifies such aspects of the message structure as its length, data format, and block identification number. See also header.

message of the day

n. A daily bulletin for users of a network, multiuser computer, or other shared system. In most cases, users are shown the message of the day when they log into the system. Acronym: MOTD.

Message Passing Interface n. See MPI.

message queue

n. An ordered list of messages awaiting transmission, from which they are taken up on a first in, first out (FIFO) basis.

Message Queuing

n. A message queuing and routing system for Microsoft Windows that enables distributed applications running at different times to communicate across heterogeneous networks and with computers that may be off line. Message Queuing provides guaranteed message delivery, efficient routing, security, and priority-based messaging. Message Queuing was formerly known as MSMQ.

Message Security Protocol

Microsoft Internet & Networking Dictionary

n. A protocol for Internet messages that is based on the use of encryption and verification to ensure security. It also allows for permissions at the server level for delivery or rejection of e-mail. Acronym: MSP.

message switching

n. A technique used on some communications networks in which a message, with appropriate address information, is routed through one or more intermediate switching stations before being sent to its destination. On a typical message-switching network, a central computer receives messages, stores them (usually briefly), determines their destination addresses, and then delivers them. Message switching enables a network both to regulate traffic and to use communications lines efficiently. Compare circuit switching, packet switching.

message transfer agent n. See MTA.

messaging

n. The use of computers and data communication equipment to convey messages from one person to another, as by e-mail, voice mail, or fax.

Messaging Application Programming Interface n. See MAPI.

messaging client

n. An application program that enables its user to send or receive messages (such as e-mail or fax) to and from other users with the help of a remote server.

messaging-oriented middleware n. See MOM.

Meta-Content Format

n. An open format for describing information about content of a structured body of data such as a Web page, a set of files on a Windows desktop, or a relational database. Meta-Content Format might be used for indexes, data dictionaries, or price lists. Acronym: MCF.

metatag or meta tag

n. A tag in an HTML or XML document that allows a Web-page creator to include such information as the author’s name, keywords identifying content, and descriptive details (for example, non-text objects on the page). The information that is marked with metatags does not appear on the Web page when a user views it in a browser, but it can be viewed in the HTML or XML source. Metatags are included in the head of a document and are often used to assist search engines in indexing the page. See also HTML, source, tag, XML.

Metropolitan Area Exchange n. See MAE.

metropolitan area network n. See MAN.

mget

n. Short for multiple get. A command in most FTP clients with which a user can request the transfer of several files at once. See also FTP1 (definition 1).

MHTML

n. Acronym for Multipurpose Internet Mail Extension Hypertext Markup Language, or MIME HTML. A standard method for sending an HTML document encapsulated with inline graphics,

Microsoft Internet & Networking Dictionary

applets, linked documents, and other items referred to in the HTML document. See also HTML, MIME.

MIB

n. See Management Information Base.

microbrowser

n. An application for mobile phones that allows users to access the Internet to send and receive e-mail and browse the Web. Microbrowsers don’t have the full functionality of a Web browser on a PC. For instance, microbrowsers are capable of loading only stripped-down text versions of Web pages. Most microbrowser products are built to utilize the Wireless Application Protocol (WAP) standard. See also Wireless Application Protocol.

microcontent

n. Short pieces of text on a Web page that help provide an overview of the page’s contents. Microcontent introduces, summarizes, or enhances the macrocontent of a Web page, and includes headings, page titles, ALT text, links, and subheads. Compare macrocontent.

microsite

n. 1. A small Web site targeted to a single message or topic and nested within a larger site. Microsites geared to promotional and sales of specific products and services may be integrated into popular Web sites by advertisers. 2. A small Web site with a single focus. Also called: minisite.

Microsoft FrontPage

n. A program you can use to create and manage Internet and intranet sites without programming; FrontPage is available as part of one of the Microsoft Office suites or as a stand-alone product.

Microsoft Internet Explorer n. See Internet Explorer.

Microsoft Knowledge Base n. See KB.

Microsoft MSN Explorer n. See MSN Explorer.

Microsoft MSN Messenger Service n. See .NET Messenger Service.

Microsoft .NET Messenger Service n. See .NET Messenger Service.

Microsoft Network n. See MSN.

Microsoft Office n. See Office.

Microsoft Operations Manager

n. A server and application management solution developed by Microsoft Corporation to deliver event and performance management for the Windows 2000-based environment and .NET Enterprise Server applications. Operations management features include enterprise event log reports from across the corporate network, proactive monitoring and alert messaging, and reporting and trend analysis for problem tracking. Microsoft Operations Manager provides flexibility through sophisticated management rules, which can be customized to meet the needs

Microsoft Internet & Networking Dictionary

of individual businesses. Microsoft Operations Manager support for management technology standards permits easy integration with other enterprise management systems.

Microsoft Outlook n. See Outlook.

Microsoft Project

n. A software application developed by Microsoft Corporation to simplify the planning and management of projects. Microsoft Project includes features that help you build and manage projects, set schedules and milestones, and communicate and share ideas with team members.

Microsoft Reader

n. A software application developed by Microsoft for downloading electronic books and other publications onto any personal computer, laptop computer, or Pocket PC handheld device. Additional features allow users to bookmark pages, highlight text, write notes, and look up definitions.

Microsoft TechïEd

n. An annual training conference held by Microsoft Corporation to educate engineers and businesses using Microsoft technology. The conference provides attendees with access to information, experts, and training labs on Microsoft’s latest technologies.

Microsoft Visual InterDev n. See Visual InterDev.

Microsoft Visual Studio n. See Visual Studio.

Microsoft Visual Studio .NET

n. A complete development environment for building on the Microsoft .NET technology. Using Visual Studio .NET, developers can create secure, scalable applications and Web services quickly in the language of their choice, leveraging existing systems and skills.

Microsoft Windows n. See Windows.

Microsoft Windows Messenger n. See .NET Messenger Service.

Microsoft Windows NT n. See Windows NT.

Microsoft Word n. See Word.

Microsoft XML n. See MSXML.

middleware

n. Software that sits between two or more types of software and translates information between them. Middleware can cover a broad spectrum of software and generally sits between an application and an operating system, a network operating system, or a database management system. Examples of middleware include Common Object Request Broker Architecture (CORBA) and other object broker programs and network control programs.

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