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Pronounced dot cat. The generic Top Level Domain (gTLD) intended to support the Catalan linguistic and cultural community.This agreement is most unusual, as Catalan is spoken by less than 16 million people in the world and understood by less than 21 million. Catalan is the language of Catalonia in Spain, the city of Valencia, the Principality of Andorra, and other isolated cities, regions, and islands in Spain, France, Italy, and that general area of Europe.This domain was created in 2005 under the sponsorship of Fundaci

A set of structured cabling standards have been developed over time by standards bodies acting in various collaborations. The standards bodies are the American National Standards Institute (ANSI), Electronic Industries Alliance (EIA), Insulated Cable Engineers Association (ICEA), International Electrotechnical Commission (IEC), International Organization for Standardization (ISO), and Telecommunications Industry Association (TIA). EIA/TIA 568A, released in 1985, built on earlier work at AT&T, IBM, and other companies, and set the tone for formally standardization structured wiring standards.That standard subsequently was supplemented and improved as EIA/TIA 568B. It also was internationalized in 1995 as ISO/IEC 11801.The standards are known as Cat 1, Cat 2, Cat 3, Cat 4, Cat 5, Cat 6, and Cat 7, and are progressively more capable due to tighter tolerances on dimensions and different twist pitches. Table C-1 compares the various categories with gauge measurements stated in American Wire Gauge (AWG). See also ANSI, AWG, Cat 1-7, EIA, EIA/TIA-568, ICEA, IEC, ISO, ISO/IEC 11801, TIA, and twist pitch.

Table C-1: Twisted-Pair Categories of Performance

Cat	AWG	Rating	Typical Applications	Standards
Cat 1	Various	Unspecified; < 1 MHz	POTS, ISDN BRI, RS-232 & RS-422, low-speed data, speaker wire, alarm cable	ANSI/ICEA S-80-576 ANSI/ICEA S-91-661
Cat 2	24 gauge	1 MHz	4 Mbps Token Ring LANs	ANSI/ICEA S-80-576
Cat 3	24 gauge	16 MHz	POTS, ISDN, T1, 10Base-T LAN	ANSI/ICEA S-91-661 ANSI/ICEA S-101-699 ANSI/TIA/EIA 568 ISO/IEC 11801
Cat 4	24 gauge	20 MHz	16 Mbps Token Ring LAN	ANSI/TIA/EIA 568 ISO/IEC 11801
Cat 5	24 gauge	100 MHz	10/100Base-T LAN	ANSI/ICEA S-91-661 ANSI/TIA/EIA 568 ISO/IEC 11801
Cat 5e	24 gauge	100+ MHz	10/100Base-T LAN, 155 Mbps ATM, 1000Base-T (Gigabit Ethernet, or GbE)	ANSI/ICEA S-91-661 ANSI/TIA/EIA 568 ISO/IEC 11801
Cat 6	22Â24 gauge	250 MHz	1000Base-T	ANSI/TIA/EIA 568 ISO/IEC 11801
Cat 7	22Â24 gauge	600 MHz	10 GbE	ANSI/TIA/EIA 568 ISO/IEC 11801

See .cat in Computer

(1) (CATegory X) See cable categories.

(2) (conCATenate) A Unix/Linux/Mac OS X command that is used to create a text file, display the contents of a text file or add one file to another (concatenate files). Cat is the Unix counterpart of the Copy Con command in DOS/Windows. Following are some examples. See DOS Copy Con.


  cat > newfile    create text file
  bla bla bla      type the text
  Control-D        press Control-D to exit

  cat newfile      display file "newfile"

  cat f1 f2 > f3   concatenate "f1" and "f2"
                    creating file "f3"