Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:

Диплом / материал с интернета / СТАНДАРТЫ КАБЕЛЬНОЙ СЕТИ ETHERNET

.htm
Скачиваний:
12
Добавлен:
10.02.2016
Размер:
112.54 Кб
Скачать

яю =AB0=B8= 5;52 >=AB0=B8= 5;52 3 35 2014-05-20T16:34:00Z 2014-05-20T19:49:00Z 1 2038 11619 96 27 13630 14.00 Clean Clean false false false false RU X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"1KG=0O B01;8F0"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} 5@=CBLAO =0 3;02=CN  ! 6. (!" "+ , !" ETHERNET) 4=8B :>B>@>3> =5?>A@54AB25==> 7028A8B 55 ?@>872>48B5;L=>ABL, O2;O5BAO AB0=40@B. 0 2A5 2@520=8O ;>:0;L=KE A5B59 8E =0:>?8;>AL 4>AB0B>G=> 3>, ?>MB>4E>4OI89. @54AB02LB5 A515, 87 :0:>3> :>;8G5AB20 @07=>>1@07=KE :>=5=B>2 A>AB>8B ;>:0;L=0O A5BL. >-?5@2KE, :>?5@0F8>==0O A8AB5-2B>@KE, A5B520O :0@B0; 2-B@5BL8E, :>=F5=B@0B>@K, @K 8 B. ?.; 2-G5B25@BKE, ?@>3@015A?5G5=85, @01>B0NI55 A A5B52>9 :0@B>9, 8 B. 4. "@51>20=8O :> 2A51@07=K, :@>3>, 8E 2K?CA:0NB @07=K5 ?@>872>48B5;8, ?>MB>3;0A>20==>AB8 B@C4=> 4>AB8GL ?@85 @57C;LB0B0. ;O MB>3> 8 ACI5AB2C5B AB0=40@B. 07@01>B:>9 AB0=40@B>2 70=8@30=870F88 8 :>4=0O >@30=870F8O ?> AB0=40@B870F88 (International Organization for Standardization, IOS1) - CG@5645=85, A>AB>OI55 87 254CI8E >@30=870F89 @07=KE AB@0=, :>B>@K5 70=8B:02. 564C=0@>4=K9 A>N7 M;5:B@>A2O78 (International Telecommunications i Union, ITU) - ?>AB>O==> 459AB2CNI0O >@30=870F8O, 2K?CAB82H0O 3> @07=>>1@07=KE AB0=40@B>2, 2 >A=>2=>2 M;5:B@>B5E=8:8 8 @048>M;5:B@>=8:8 (Institute of Electrical and Electronic Engineers, IEEE) - :@C?=59H0O >@30=870F8O, :>B>@0O 70=8?@545;5=852. AA>F80F8O ?@>872>48B5;59 :>2 8 >@3B5E=8:8 (Computer and Business Equipment Manufacturers Association, CBEMA) - >@30=870F8O ?@>872>48B5;59 0??0@0B=>3> >15A?5G5=8O !(, :>B>@0O 70=8B:>9 AB0=40@B>2 ?> >1@01>B:5 8=D>@2 (American National Standards Institute, ANSI) - >@30=870F8O, 70=8B:>9 AB0=40@B>2 (=0G8=0O A A5B52KE 8 70:0=G820O AB0=40@B02 ?@>3@0AB025 ISO. 865 >?8A0=K =5:>B>@K5 A5B52K5 AB0=40@BK, @07@01>B0==K5 IEEE 4;O ?@>2>4=KE (:015;L=KE) A5B59. ETHERNET 10BASE-2 0==0O @50;870F8O A5B8 >B=>A8BAO : B>?>;>388 ">1I0O H8=0" 8 @01>B05B =0 A:>@>AB8 10 18B/A. ;O A>740=8O A5B8 8A?>;L7C5BAO B>=:89 (0,25 A0:A80;L=K9 :015;L, ?>MB> 6=> CA;KH0BL =0720=85 "B>=:0O Ethernet" 8;8 "B>=:89 :>0:A80;". !5B8, ?>AB@>5==K5 2 A>>B25BAB288 A> AB0=40@B>AB>B>9 8 =87:>9 AB>8ABLN. -B> ?>72>;O5B 8A?>;L7>20BL 8E 2 :0G5AB25 AB0@B>2>9 ?;>I04:8 4;O 4>D8A=>9 A5B8. >0:A80;L=K9 :015;L ?@>:;04K20NB ?> E>4C @0A?>;>65=8O :>2. 'B>1K 703;CH8BL :>=5G=K9 A83=0; (871028BLAO >B CE>40 53> 2 =8:C40), ?@8B>@K5 CAB0=02;820NB =0 >1>8E :>=F0E F5=B@0;L=>3> :015;O. ;O ?>4:;NG5=8O :015;O : A5B52>9 :0@B5 2 =53> 2@570NB "-:>==5:B>@, :>B>@K9 >4=8=F>548=O5BAO A !-:>==5:B>@>45, 0 420 4@C38E A;C60B 4;O A>548=5=8O F5=B@0;L=>3> :015;O. 0:A84=>3> A53;6=0 ?@52KH0BL 185 ;ONB :>=F5=B@0B>@K (@5?8B5@K), CA8;820NI85 ?5@5402053@0=8G5=8O: ·  =5 1>;55 5 A532; ·  =5 1>;55 4 @5?8B5@>2 20B5;59 MB> ?@028;> ?>;CG8;> =0720=85 "5-4-3". @>3>, =5;L7O 701K20BL A;54CNI85 >3@0=8G5=8O: ·  =5 1>;55 30 A5B52KE ?>4:;NG5=89 =0 A53