📄 rfc1983.txt
字号:
using a common Interior Gateway Protocol for routing packets. backbone The top level in a hierarchical network. Stub and transit networks which connect to the same backbone are guaranteed to be interconnected. See also: stub network, transit network. bandwidth Technically, the difference, in Hertz (Hz), between the highest and lowest frequencies of a transmission channel. However, as typically used, the amount of data that can be sent through a given communications circuit. bang path A series of machine names used to direct electronic mail from one user to another, typically by specifying an explicit UUCP path through which the mail is to be routed. See also: email address, mail path, UNIX-to-UNIX CoPy. baseband A transmission medium through which digital signals are sent without complicated frequency shifting. In general, only one communication channel is available at any given time. Ethernet is an example of a baseband network. See also: broadband, Ethernet. [Source: NNSC]Malkin Informational [Page 7]RFC 1983 Glossary August 1996 Basic Encoding Rules (BER) Standard rules for encoding data units described in ASN.1. Sometimes incorrectly lumped under the term ASN.1, which properly refers only to the abstract syntax description language, not the encoding technique. See also: Abstract Syntax Notation One. [Source: NNSC] BBS See: Bulletin Board System BCNU Be Seein' You BCP The newest subseries of RFCs which are written to describe Best Current Practices in the Internet. Rather than specifying a protocol, these documents specify the best ways to use the protocols and the best ways to configure options to ensure interoperability between various vendors' products. BCPs carry the endorsement of the IESG. See also: Request For Comments, Internet Engineering Steering Group. BER See: Basic Encoding Rules Berkeley Internet Name Daemon (BIND) Implementation of a DNS server developed and distributed by the University of California at Berkeley. Many Internet hosts run BIND, and it is the ancestor of many commercial BIND implementations. See also: Domain Name System. Berkeley Software Distribution (BSD) Implementation of the UNIX operating system and its utilities developed and distributed by the University of California at Berkeley. "BSD" is usually preceded by the version number of the distribution, e.g., "4.3 BSD" is version 4.3 of the Berkeley UNIX distribution. Many Internet hosts run BSD software, and it is the ancestor of many commercial UNIX implementations. [Source: NNSC] BGP See: Border Gateway Protocol big-endian A format for storage or transmission of binary data in which the most significant bit (or byte) comes first. The term comes from "Gulliver's Travels" by Jonathan Swift. The Lilliputians, being very small, had correspondingly small political problems. TheMalkin Informational [Page 8]RFC 1983 Glossary August 1996 Big-Endian and Little-Endian parties debated over whether soft- boiled eggs should be opened at the big end or the little end. See also: little-endian. [Source: RFC1208] binary 11001001 BIND See: Berkeley Internet Name Daemon Birds Of a Feather (BOF) A Birds Of a Feather (flocking together) is an informal discussion group. It is formed, often ad hoc, to consider a specific issue and, therefore, has a narrow focus. See also: Working Group. Bitnet An academic computer network that provides interactive electronic mail and file transfer services, using a store-and-forward protocol, based on IBM Network Job Entry protocols. Bitnet-II encapsulates the Bitnet protocol within IP packets and depends on the Internet to route them. BOF See: Birds Of a Feather BOOTP The Bootstrap Protocol, described in RFC 1542, is used for booting diskless nodes. See also: Dynamic Host Configuration Protocol, Reverse Address Resolution Protocol. Border Gateway Protocol (BGP) The Border Gateway Protocol is an exterior gateway protocol defined in RFC 1771. It's design is based on experience gained with EGP, as defined in RFC 904, and EGP usage in the NSFNET Backbone, as described in RFCs 1092 and 1093. See also: Exterior Gateway Protocol. bounce The return of a piece of mail because of an error in its delivery. [Source: ZEN] bridge A device which forwards traffic between network segments based on datalink layer information. These segments would have a common network layer address. See also: gateway, router.Malkin Informational [Page 9]RFC 1983 Glossary August 1996 broadband A transmission medium capable of supporting a wide range of frequencies. It can carry multiple signals by dividing the total capacity of the medium into multiple, independent bandwidth channels, where each channel operates only on a specific range of frequencies. See also: baseband. broadcast A special type of multicast packet which all nodes on the network are always willing to receive. See also: multicast, unicast. broadcast storm An incorrect packet broadcast onto a network that causes multiple hosts to respond all at once, typically with equally incorrect packets which causes the storm to grow exponentially in severity. See also: Ethernet meltdown. brouter A device which bridges some packets (i.e. forwards based on datalink layer information) and routes other packets (i.e. forwards based on network layer information). The bridge/route decision is based on configuration information. See also: bridge, router. BSD See: Berkeley Software Distribution BTW By The Way Bulletin Board System (BBS) A computer, and associated software, which typically provides electronic messaging services, archives of files, and any other services or activities of interest to the bulletin board system's operator. Although BBS's have traditionally been the domain of hobbyists, an increasing number of BBS's are connected directly to the Internet, and many BBS's are currently operated by government, educational, and research institutions. See also: Electronic Mail, Internet, Usenet. [Source: NWNET] Campus Wide Information System (CWIS) A CWIS makes information and services publicly available on campus via kiosks, and makes interactive computing available via kiosks, interactive computing systems and campus networks. Services routinely include directory information, calendars, bulletin boards, databases.Malkin Informational [Page 10]RFC 1983 Glossary August 1996 CCIRN See: Coordinating Committee for Intercontinental Research Networks CCITT See: Comite Consultatif International de Telegraphique et Telephonique CERT See: Computer Emergency Response Team checksum A computed value which is dependent upon the contents of a packet. This value is sent along with the packet when it is transmitted. The receiving system computes a new checksum based upon the received data and compares this value with the one sent with the packet. If the two values are the same, the receiver has a high degree of confidence that the data was received correctly. See also: Cyclic Redundancy Check. [Source: NNSC] CIDR See: Classless Inter-domain Routing circuit switching A communications paradigm in which a dedicated communication path is established between two hosts, and on which all packets travel. The telephone system is an example of a circuit switched network. See also: connection-oriented, connectionless, packet switching. Classless Inter-domain Routing (CIDR) A proposal, set forth in RFC 1519, to allocate IP addresses so as to allow the addresses to be aggregated when advertised as routes. It is based on the elimination of intrinsic IP network addresses; that is, the determination of the network address based on the first few bits of the IP address. See also: IP address, network address, supernet. client A computer system or process that requests a service of another computer system or process. A workstation requesting the contents of a file from a file server is a client of the file server. See also: client-server model, server. [Source: NNSC]Malkin Informational [Page 11]RFC 1983 Glossary August 1996 client-server model A common way to describe the paradigm of many network protocols. Examples include the name-server/name-resolver relationship in DNS and the file-server/file-client relationship in NFS. See also: client, server, Domain Name System, Network File System. CNI See: Coalition for Networked Information Coalition for Networked Information (CNI) A consortium formed by American Research Libraries, CAUSE, and EDUCOM (no, they are not acronyms) to promote the creation of, and access to, information resources in networked environments in order to enrich scholarship and enhance intellectual productivity. Comite Consultatif International de Telegraphique et Telephonique ( CCITT) This organization is now part of the International Telecommunications Union and is responsible for making technical recommendations about telephone and data communications systems. Every four years CCITT holds plenary sessions where they adopt new standards; the most recent was in 1992. Recently, the ITU reorganized and CCITT was renamed the ITU-TSS. See also: International Telecommunications Union - Telecommunications Standards Sector. Computer Emergency Response Team (CERT) The CERT was formed by ARPA in November 1988 in response to the needs exhibited during the Internet worm incident. The CERT charter is to work with the Internet community to facilitate its response to computer security events involving Internet hosts, to take proactive steps to raise the community's awareness of computer security issues, and to conduct research targeted at improving the security of existing systems. CERT products and services include 24-hour technical assistance for responding to computer security incidents, product vulnerability assistance, technical documents, and tutorials. In addition, the team maintains a number of mailing lists (including one for CERT Advisories), and provides an anonymous FTP server, at "cert.org", where security-related documents and tools are archived. The CERT may be reached by email at "cert@cert.org" and by telephone at +1-412-268-7090 (24-hour hotline). See also: Advanced Research Projects Agency, worm. congestion Congestion occurs when the offered load exceeds the capacity of a data communication path.Malkin Informational [Page 12]RFC 1983 Glossary August 1996 connection-oriented The data communication method in which communication proceeds through three well-defined phases: connection establishment, data transfer, connection release. TCP is a connection-oriented protocol. See also: circuit switching, connectionless, packet switching, Transmission Control Protocol. connectionless The data communication method in which communication occurs between hosts with no previous setup. Packets between two hosts may take different routes, as each is independent of the other. UDP is a connectionless protocol. See also: circuit switching, connection-oriented, packet switching, User Datagram Protocol. Coordinating Committee for Intercontinental Research Networks (CCIRN) A committee that includes the United States FNC and its counterparts in North America and Europe. Co-chaired by the executive directors of the FNC and the European Association of Research Networks (RARE), the CCIRN provides a forum for cooperative planning among the principal North American and European research networking bodies. See also: Federal Networking Council, RARE. [Source: MALAMUD] core gateway Historically, one of a set of gateways (routers) operated by the Internet Network Operations Center at Bolt, Beranek and Newman (BBN). The core gateway system formed a central part of Internet routing in that all groups must advertise paths to their networks from a core gateway. [Source: MALAMUD] Corporation for Research and Educational Networking (CREN) This organization was formed in October 1989, when Bitnet and CSNET (Computer + Science NETwork) were combined under one administrative authority. CSNET is no longer operational, but CREN still runs Bitnet. See also: Bitnet. [Source: NNSC] cracker
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -