TAILIEUCHUNG - CCNA 1 and 2 Companion Guide, Revised (Cisco Networking Academy Program) part 94

Cisco Networking Academy Program CCNA 1 and 2 Companion Guide, Revised part 94 is the Cisco approved textbook to use alongside version of the Cisco Networking Academy Program CCNA 1 and CCNA 2 web-based courses. The topics covered provide you with the necessary knowledge to begin your preparation for the CCNA certification exam (640-801, or 640-821 and 640-811) and to enter the field of network administration. | Page 899 Tuesday May 20 2003 4 54 PM Structured Cabling Standards and Codes 899 Both the TIA and the EIA are accredited by the American National Standards Institute ANSI section to develop voluntary industry standards for a wide variety of telecommunications products. This means that many standards often are labeled ANSI TIA EIA. The various committees and subcommittees of TIA EIA develop standards for fiber optics user premises equipment network equipment wireless communications and satellite communications. Although there are many standards and supplements the following are used most frequently by cable installers see Figure A-14 . Figure A-14 TIA EIA Structured Cabling Standards TIA EIA-568-A Commercial Building Telecommunications Cabling Standard TIA EIA-568-B Cabling Standards TIA EIA-569-A Commercial Building Standard for Telecommunications Pathways and Spaces TIA EIA-570-A Residential and Light Commercial Telecommunications Wiring Standard TIA EIA-606 Administration Standard for the Telecommunications Infrastructure of Commercial Buildings TIA EIA-607 Commercial Building Grounding and Bonding Requirements for Telecommunications TIA EIA 568-A is the Commercial Building Standard for Telecommunications Wiring. The standard specifies minimum requirements for telecommunications cabling recommended topology and distance limits media and connecting hardware performance specifications and connector and pin assignments. TIA EIA-568-B is the Cabling Standard. This standard specifies the component and transmission requirements for media. TIA specifies a generic telecommunications cabling system for commercial buildings that will support a multiproduct multivendor environment. TIA is an addendum that applies to four-pair unshielded twisted-pair UTP and four-pair screened twisted-pair ScTP patch cables bend radius. TIA specifies cabling components transmission system models and the measurement procedures .

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