Cov kev tawm tswv yim ntawm cov twj siv technology hauv tshuab hlwb hlau tau ua kom muaj kev nkag mus rau cov kab txuas ntau dua. Muaj ntau txoj kev xaiv rau kev sib txuas ntawm kev sib txuas, xaiv ib qho kev cai raws li txoj hauv kev rau cov kev pab cuam kev txuas broadband yog me ntsis ruam. Twisted Pair vs Coaxial Cable thiab Fiber Optic Cable: Ib qho twg yuav zoo tagnrho thaum noj ntau yam hauv kev saib xyuas, xws li nqi, kev cia siab, thiab bandwidth. Cov ncej no yuav tham txog peb hom cables thiab ho muaj kev sib piv nrog lawv.
Coaxial cable, lossis coax cable, yog ib qho hlau uas feem ntau yog tooj liab qhwv nyob rau hauv ib qho chaw npuas hluav taws xob, zoo ib puag ncig los ntawm ib daim ntaub thaiv npog npuag, tom qab ntawd hauv lub tsho yas. Vim yog nws cov cuab yeej insulating, coaxial cable yuav nqa tau cov kev teeb tsa analogy nrog ntau hom frequencies. Yog li nws yog dav siv rau hauv pub cov hlua txuas xov tooj cua thiab cov receivers nrog lawv cov khoom siv, kev sib txuas ntawm lub computer, cov suab, thiab xa tawm cov ntawv xov xwm hauv TV. Cov duab hauv qab no qhia tau hais tias cov qauv ntawm coaxial cable.
Twisted pair cable yog ib hom kab thaiv uas ob tus neeg zaum ntawm ib zaug xwb Circuit Court ua ke. Nws tuaj nyob rau hauv ob lub versions: Shielded Twisted Pair (STP) thiab Unshielded Twisted Pair (UTP). STP feem ntau siv hauv Token Nplhaib tes thiab UTP yog nyob hauv Ethernet tes hauj lwm. Piv txwv li, Cat 7 twisted pair cables siv rau 1000BASE-T (Gigabit Ethernet, lossis GbE) thiab 10GBASE-T (10-Gigabit Ethernet, los yog 10 GbE) tes hauj lwm. Daim duab hauv qab no qhia txog dab tsi UTP (sab laug) thiab STP (txoj cai) zoo nkaus li.
Ib qho fiber ntau optic cable yog kab uas muaj ib qho los yog ntau qhov muag fibers. Fiber optic cables feem ntau muaj ob peb lub cuaj ciam, thiab txhua lub fib ntim tuaj yeem ua raws li ntau lub wavelengths (los yog raws), uas cia fiber ntau kom haum raws li cov ntaub ntawv muaj peev xwm tshaj tawm. Thaum xaus nrog LC / SC / FC / FC / MTRJ / MU / SMA connectors ntawm ob hnub, xws li LC-LC, LC-SC, LC-ST, SC ST, SC-ST thiab lwm yam, fiber optic cables muaj peev xwm ua tau qhov sib txuas ntawm qhov sib txuas ntawm cov khoom siv thaum lub sij hawm fiber cabling. Siv LC rau LC fiber ntau cable piv txwv, nws yog siv rau ob qho tag nrho luv luv thiab ntev ntev. Cov duab nram qab no muaj cov ntsiab lus ntawm LC rau LC fiber ntau cable.
Thaum xaiv hom kab xov tooj zoo tsim nyog rau cov kev pab cuam network, ib tug yuav tsum nco ntsoov tias txhua lub xov tooj muaj nws qhov tshwj xeeb thiab qhov tsis zoo txog cov teeb meem no: tus nqi, kev ceev, kev ruaj ntseg, kev cia siab, bandwidth, cov ntaub ntawv nqa lub peev xwm, thiab ntxiv rau.
Coaxial cable yuav muab tau yooj yim, yooj yim resistant rau cuam. Txawm li cas los xij, nws yog qhov dav thiab qhov zoo tagnrho rau luv luv vim nws txoj kev kawm siab. Nws yuav kim tshaj cov ntaub ntawv kis tau ntev. Los ntawm kev sib piv, twisted khub cable yog qhov yooj ywm thiab pheej yig tshaj ntawm peb hom cables, yooj yim rau nruab thiab khiav lag luam. Tab sis nws kuj tau ntsib cov teeb meem kev tuaj kawm ntawv thiab muaj cov kab mob qis dua. Tsis tas li ntawd, nws yog qhov cuam tshuam rau kev cuam tshuam thiab nrov. Raws li yog ib qho ntawm nrov tshaj plaws rau kev sib tw tshiab thiab hloov khoom dua tshiab, nrog rau caj qaum, kab rov tav, thiab kev siv duab txawm, fiber optic fiber ntau me me thiab lub teeb hauv qhov hnyav. Vim tias tus neeg xyuas pib iav uas txhais tau hais tias tsis muaj hluav taws xob tuaj yeem los ntawm, fiber ntau cable yog tiv thaiv electromagnetic cuam tshuam. Qhov loj tshaj plaws ntawm fiber ntau optic cable yog tias nws muaj peev xwm kis tau tus nqi loj ntawm cov ntaub ntawv nrog tsawg poob ntawm kev kub ceev ntev ntev. Txawm li cas los xij, nws xav tau kev txhim kho kev lag luam, nyuaj ua hauj lwm nrog thiab kim hauv luv luv.
Xaiv ntawm nkawm khau vs coaxial cable thiab fiber ntau optic cable tsuas yog nyob ntawm koj cov kev xav tau thiab lub network topology. Koj tuaj yeem ntsuas cov nqi thiab cov kev txwv ntawm bandwidth kom xaiv. Tsis muaj teeb meem coaxial cable, twisted cable cable los yog fiber ntau cable, suiting koj cov kev cai network yog qhov zoo tshaj plaws. Hauv FOCC, koj tuaj yeem pom ob kab twisted cables thiab cov kab mob fiber ntau. Lwm cov cables xws li Qib 5e, Qeb 6, Qeb 6A kuj muaj rau koj cov tes hauj lwm tooj liab. Muaj tseeb, ntau tus cab fais fab ntawm cov neeg ua haujlwm tau zoo nyob hauv FOCC. Koj tuaj yeem mus saib FOCC kom paub ntau ntxiv txog kev daws teeb meem kabmob.