Term
| classless inter-domain routing (CIDR) |
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Definition
| A method of dividing a network IP address into subnets by designating some number of its host bits as network bits. This method differs from traditional classful addressing by allowing the division between the network identifier and the host identifier to fall anywhere in an IPv4 address; it does not have to fall on one of the eight-bit boundaries. |
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Term
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Definition
| A communication protocol used in data networking that does not require the establishment of a connection before it can transfer data. Systems simply transmit their packets to the destination, without knowing if the destination system is ready to accept data, or if it even exists. Connectionless protocols do not guarantee delivery of their data, but they operate with a very low overhead that conserves network bandwidth. |
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Term
| connection-oriented protocol |
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Definition
| A communication protocol used in data networking in which two communicating systems establish a connection before they transmit any data. Once the connection is established, the computers exchange packets with complex headers designed to provide error detection and correction. A connection-oriented protocol ensures bit-perfect data transmissions, but at the price of greatly increased overhead. |
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Term
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Definition
| The process by which networking protocols add headers and sometimes footers to an existing data structure to provide it with addressing information and other function-specific values. |
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Term
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Definition
| A data structure generated by a network layer protocol such as Internet Protocol, consisting of transport layer data with a header containing an IP address and other communications information. |
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Term
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Definition
| The technical term for a type of modular cable connector used on data networks constructed with unshielded twisted pair (UTP) cabling. |
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Term
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Definition
| A software routine that acts as a virtual barrier between a computer and the network to which it is attached. It essentially is a filter that enables certain types of incoming and outgoing traffic to pass through, while blocking other types. |
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Term
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Definition
| A data structure generated by a data link layer protocol such as IEEE 802.3, consisting of network layer data with a header and a footer containing a MAC address and other communications information |
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Term
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Definition
| A network layer protocol in the TCP/IP suite that provides end-to-end addressing and other communication services. |
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Term
| IP (Internet Protocol) address |
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Definition
| A unique 32-bit numeric address used as an identifier for a device, such as a computer, on a TCP/IP network. |
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Term
| Link Local Multicast Name Resolution (LLMNR |
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Definition
| A name resolution protocol used by IPv6 computers with link-local addresses that do not have access to a Domain Name System (DNS) server. |
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Term
| media access control (MAC) address |
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Definition
| A six-byte hexadecimal sequence, hard-coded into each network interface adapter by the manufacturer, used by data link layer protocols to uniquely identify a computer on a local area network. |
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Term
| network address translation (NAT) |
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Definition
| A type of routing protocol that enables multiple computers on a private network to share one public IP address. |
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Term
| OSI (Open Systems Interconnection) reference model |
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Definition
| A theoretical teaching and design aid that splits the data networking process into seven distinct layers, each of which provides specific functions. |
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Term
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Definition
| A type of communications network in which a sending system splits data into discrete units called packets, which it transmits individually to the destination system. The destination system then reassembles the packets back into the original data stream. |
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Term
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Definition
| In TCP/IP networking, a code that identifies a particular application running on a computer, used to forward incoming traffic to the proper destination process. |
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Term
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Definition
| A collection of communication rules that enable computers to communicate with each other. |
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Term
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Definition
| A device that connects one network to another. |
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Term
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Definition
| The combination of an IP address and a port number, expressed using the format xxx.xxx.xxx.xxx:yyyy. |
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Term
| stateless address autoconfiguration |
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Definition
| An IPv6 address assignment technique that enables computers to configure their own addresses after transmitting router solicitation multicasts to the routers on the network and receiving router advertisement messages in return. |
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Term
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Definition
| In TCP/IP networking, a 32-bit value that specifies which bits of an IP address form the network identifier and which bits form the host identifier. |
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Term
| Transmission Control Protocol (TCP) |
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Definition
| A connection-oriented transport layer protocol that provides services such as guaranteed delivery and error protection for data transmissions that must be bit perfect. |
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Term
| unshielded twisted pair (UTP) |
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Definition
| A type of cable consisting of a number of wire pairs, each individually twisted and all enclosed in a sheath. This cable is often used for voice and data communications. |
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Term
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Definition
Provides interface between software applications and network for interpreting application request and requirements.
BOOTP,DHCP,DNS,FTP,HTTP,IMAP4,
PING,POP3,NSLOOKUP,NTP,SFTP,
SMTP,SNMP,Telnet,TFTP. |
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Term
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Definition
| Allows host and applications to use a common language, preforms data formatting,encryption, and compression. MIME,SSL,TLS |
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Term
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Definition
| Establishes, maintains, and terminates user connections.RTP,SIP |
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Term
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Definition
| Ensures accurate delivery of data through flow control, segmentation, and reassembly, error correction, and acknowledgment. TCP,UDP |
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Term
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Definition
| Establishes network connections; translates network addresses into their physical counterparts and determines routing. Routers, Layer 3 switches, Firewalls. ARP, ICMP,IGMP,IP,IPSec, RARP |
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Term
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Definition
| Packages data in frames appropriate to network transmission method. Bridges, Switches, Wireless access point. L2TP, PPP, PPTP, SLIP. |
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Term
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Definition
| Manages signaling to and from physical network connections. Hubs, Repeaters. IEEE 802.3(Ethernet), 802.5(Token ring), 802.11(Wi-Fi). |
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