Cisco Systems RJ-45-to-AUX manual 394

An organization that develops standards with the EIA (Electronics Industries Association) for telecommunications technologies.

Telnet

Standard terminal−emulation protocol in the TCP/IP protocol stack. It is used to perform terminal emulation over TCP/IP via remote terminal connections, enabling users to log in to remote systems and use resources as if they were connected to a local system.

Terminal Access Controller Access Control System Plus (TACACS+)

A security feature that uses an MD5 encrypted algorithm to enforce strict authentication controls. It requires both a user name and password, allowing administrators to better track network usage and changes based on user accounts.

thicknet coax

Thick cable (usually about .375 inch in diameter) most commonly found in the backbone of a coaxial network.

thinnet coax

Cable that is thinner than thicknet (about .25 inch in diameter). It is commonly used in older bus topologies to connect the nodes to the network.

token

A frame that provides controlling information. In a Token Ring network, the node that possesses the token is allowed to transmit next.

Token Ring

An IBM proprietary token−passing LAN topology defined by the IEEE 802.5 standard. It operates at either 4− or 16Mbps in a star topology.

Token Ring adapters

Traditional ISA or Microchannel devices with 4− or 16Mbps transfer capability, used to connect nodes to a Token Ring network.

topology

The shape or layout of a physical network and the flow of data through the network. Transmission Control Protocol (TCP)

Part of the TCP/IP protocol stack. TCP is a connection−oriented, reliable data−transmission communication service that operates at the OSI Transport layer.

Transmission Control Protocol/Internet Protocol (TCP/IP)

The suite of protocols combining TCP and IP, developed to support the construction of worldwide internetworks. See Transmission Control Protocol and Internet Protocol.

Transmission Control Protocol/Internet Protocol (TCP/IP) socket

A socket, or connection to an endpoint, used in TCP/IP communication transmissions. transmit

The process of sending data using light, electronic, or electric signals. In networking, this is usually done in the form of digital signals composed of bits.

Transparent Bridging (TB)

A bridging type that uses the MAC address to make forwarding and filtering decisions transparent to the sender and receiver interfaces. TB is used in Ethernet.

Transport layer

Layer 4 of the OSI Reference Model. It controls the flow of information. Trivial File Transfer Protocol (TFTP)

A simplified version of FTP, allowing files to be transferred over a network from one computer to another. It’s also used to install the Cisco IOS on an IOS−based switch, router, or Gigabit Switch Router (GSR).

trunk link

A special type of VLAN connection. Unlike a user port, trunk links expect the device at the other end of the connection to understand the inserted frame tags. Standard Ethernet and Token Ring cards do not understand frame tags. Trunk links use an encapsulation method that allows them to carry the data of more than one VLAN through the switched internetwork. Devices that support trunk links are switches, routers, and some specialized NICs meant for servers.

twisted−pair

A type of cable that uses multiple twisted pairs of copper wire.

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