Internet Terms

 

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10BaseT
One of several adaptations of the Ethernet (IEEE 802.3) standard for Local Area Networks (LANs).
The 10Base-T standard (also called Twisted Pair Ethernet) uses a twisted-pair cable with maximum lengths of 100 meters. The cable is thinner and more flexible than the coaxial cable used for the 10Base-2 or 10Base-5 standards.

Cables in the 10Base-T system connect with RJ-45 connectors. A star topology is common with 12 or more computers connected directly to a hub or concentrator.
The 10Base-T system operates at 10 Mbps and uses baseband transmission methods.

10/100BaseT
This is an extension of 10BaseT that runs 10 times faster. It is theoretically capable of 100 Mbps transmission speed.

Bandwidth
The amount of data that can be transmitted in a fixed amount of time.
For digital devices, the bandwidth is usually expressed in bits per second (bps) or bytes per second. For analog devices, the bandwidth is expressed in cycles per second, or Hertz (Hz).

Bit
Abbreviation of bits per second, the standard measure of data transmission speeds.
How fast the modem can transmit and receive data. At slow rates, modems are measured in terms of baud rates. The slowest rate is 300 baud (about 25 cps).

At higher speeds, modems are measured in terms of bits per second (bps). The fastest modems run at 57,600 bps, although they can achieve even higher data transfer rates by compressing the data.
Obviously, the faster the transmission rate, the faster you can send and receive data. Note, however, that you cannot receive data any faster than it is being sent. If, for example, the device sending data to your computer is sending it at 2,400 bps, you must receive it at 2,400 bps.

Browser
Short for Web browser, a software application used to locate and display Web pages.
The two most popular browsers are Netscape Navigator and Microsoft Internet Explorer. Both of these are graphical browsers, which means that they can display graphics as well as text.
In addition, most modern browsers can present multimedia information, including sound and video, though they require plug-ins for some formats.

Byte
Abbreviation for binary term, a unit of storage capable of holding a single character.
On almost all computers, a byte is equal to 8 bits. Large amounts of memory are indicated in terms of kilobytes (1,024 bytes), megabytes (1,048,576 bytes), and gigabytes (1,073,741,824 bytes). A disk that can hold 1.44 megabytes, for example, is capable of storing approximately 1.4 million characters, or about 3,000 pages of information.

Cache
There are many different types of caches but they all have the same function. They store recently-used information in a place where it can be accessed extremely fast.

For example, a web browser like Netscape Navigator uses a cache to store on your hard drive the pages, images, sounds, and URLs of web sites you visit. With this neat strategy, when you visit a page you have recently been to, everything doesn't have to be downloaded to your computer all over again. Because accessing your computer's hard disk is much faster than accessing the Internet, this speeds up web browsing significantly.

Your computer also uses disk caching, which stores information you have recently read from your hard disk in the RAM, which is much faster to access than the hard disk.

One more common type of cache is a processor cache which stores small amounts of information right on, or right next to, the processor. This helps make the processing of the most-used instructions much more efficient, thereby speeding up computation time.

Cable Modem
A modem designed to operate over cable TV lines. Because the coaxial cable used by cable TV provides much greater bandwidth than telephone lines, a cable modem can be used to achieve extremely fast access to the World Wide Web.

Cps
Abbreviation of characters per second, a unit of measure.