Internet Dictionary
Click on a letter to see the relevant terms: A B C D E F G H I J K L M N O P Q R S T U V W Z
T1 A line used to transmit data at approximately 1.54 Mbps. In some localities, you can get T1 lines into your home.
T3 A line that can transmit data at approximately 45 Mbps.
TCP Transmission Control Protocol. It checks each packet for errors and performs other tasks to ensure reliability of packet transmission.
TCP/IP The two protocols used to send and receive packets over the Internet. IP checks each packet and decides what route to use for the packet. TCP checks each packet to make sure no errors have crept in. The two protocols ensure that error-free packets are routed in the most efficient way possible.
TCP/IP stack The software a computer uses to communicate using TCP/IP.
Telnet An Internet protocol or terminal emulation that allows a PC to log on to a remote server and become part of a local network. For instance, entering "telnet hostname" will connect your PC to the hostname server. After you log in with an acceptable name and password, your computer becomes a local client and may be able to use all the programs and data on the remote server. As you probably have deduced, telnet is one of tools a cracker will to use to infiltrate a remote system. Firewalls are one way to thwart illegal telnet entry.
Text file This is a file that contains text only, meaning the characters you can enter with a keyboard. A text file is saved in ASCII format. Whenever you see a file with an extension of ".txt", you will know its bytes are ASCII equivalents of text characters. Text files are sometimes referred as ASCII files. Simple text editors like Dos EDIT or Windows NOTEPAD save documents in ASCII format with the ".txt" extension.
Throughput The useful bps of a modem or other communication path. For instance, a modem may have a higher throughput than its rated speed of 28.8 Kbps if data compression is used. On the other hand, a TCP/IP path will have less throughput because each packet has to include source and destination addresses.
Token A special packet of data that grants the holder the right to receive or send data over the network. In most token-ring networks, only one token exists and it continuously passes from one computer to another until it finds a computer waiting to communicate with the network. The idea behind a token-ring network is similar to a traffic light at a busy intersection. You have to wait for a green light (token) before you can proceed.
Token ring A network using ring topology and the idea that only the computer holding the token (or control packet) can send data to the network. Older token-ring networks ran at 4 Mbps and used only one token. Newer token-ring networks run at 16 Mbps and use two tokens.
Topology The physical shape of networked computers viewed from a distance. For instance, three basic topologies are bus, ring, and star. A bus topology looks a line connecting the computers, a ring topology like a circle, and a star topology like a hub with spokes.
Traffic It refers to the activity on the Internet, the number of IP packets being sent at any instant. It's analogous to car traffic. During peak hours, the traffic is high. At other times, it's low. Too many users produce traffic jams or congestion, and overloaded networks are either very slow to respond or they don't respond at all.
Transit Level The middle level of the Internet hierarchy.
Trojan horse Not the same as a virus, but equally destructive. It's what appears to be useful program like a game or utility, except that it includes some code that can destroy files or otherwise damage your software. It differs from a virus because it does not replicate itself. A less destructive form of a Trojan horse is a downloaded program that lets the creator gain access to the system running his program.
Cool Stuff > Internet Dictionary > N-Z > T
Top
