Glossary 209

U

universal serial bus (USB) 2.0— A serial bus that supports a data

 

 

transfer rate of up to 480 Mbps (480 million bits per second). USB

 

can connect up to 127 peripheral devices through a single all-

 

purpose USB port. USB allows hot swapping of peripherals. See

 

also bus, hot swapping, serial.

 

upload — To send a file to another computer through a modem or

 

network. See also download.

 

USB — See universal serial bus (USB).

 

utility — A computer program designed to perform a narrowly focused

 

operation or solve a specific problem. Utilities are often related to

VW

computer system management.
Web — See World Wide Web.

 

 

Wi-Fi— A trademarked term used by the Wireless Capability Ethernet

 

Alliance which stands for Wireless Fidelity, and is another term for

 

the communication protocol to permit an Ethernet connection using

 

wireless communication components.

 

World Wide Web (www) — The worldwide network of Web sites

 

linked together over the Internet. A user of the Web can jump from

 

site to site regardless of the location of the computer hosting the site.

 

See also Internet.