Cov cuab yeej siv network, ua tsaug uas tus neeg siv nce nkag mus rau lub network, tau muab faib ua ob hom: nquag thiab passive. Cov khoom siv network nquag yuav tsum to taub raws li ntau yam kev hloov khoom siv, chaw nres nkoj, routers, thiab lwm yam. Cov khoom siv sib txuas hauv lub network muaj xws li: cov kab hluav taws xob, txuas, txuas txuas, thiab lwm yam.
Siv cov cuab yeej ua haujlwm hauv lub network
Cov khoom siv sib txuas hauv network yog tsim los ua ntau yam, ib txoj kev lossis lwm qhov cuam tshuam nrog cov ntaub ntawv xa tawm. Piv txwv li, xav txog routers. Nws tau paub tias lawv xa cov pob ntawv tshwj xeeb mus rau cov khoos phis tawj uas txuas nrog lawv, tom qab ntawd lawv nkag mus rau Is Taws Nem. Hauv txhua hom ntawm cov khoom siv sib txuas hauv network, cov ntaub ntawv xa mus rau kis tau teeb tsa, qhov twg txhua pob ntawv tau txais nrog cov ntaub ntawv sib txawv ntawm qhov chaw nyob, kev ncaj ncees ntawm cov ntaub ntawv thiab lwm cov ntaub ntawv, uas tso cai rau nws xa mus rau nws qhov chaw.
Cov khoom siv ua kom muaj zog hauv lub network tuaj yeem tsis tsuas yog ua txoj haujlwm ntawm kev xa cov ntim cov ntaub ntawv, tab sis kuj ua haujlwm ntawm kev tsim cov xa xov. Qhov no yog vim muaj qhov tseeb tias muaj ntau ntau yam ntawm cov ntaub ntawv hloov kev xaiv nyob rau hauv lub network, uas ncaj qha nyob ntawm lub nra hauv lub network thiab tsis khoom / tsis khoom pub dawb.
Network adapter siv txuas lub cuab yeej rau lub network. Cov ncauj lus rov ua dua (amplifiers), raws li koj yuav twv, tau txais thiab ua kom nrov nrov ntawm lub teeb liab uas twb muaj lawm, thaum ib tus neeg ib txwm muaj peev xwm xaim lub teeb liab tib yam. Cov hloov khoom siv (tsis tshua muaj siv) hloov ntawm ib cov ntaub ntawv xa mus rau lwm tus siv. Yeej, lawv tau siv qhov twg nws tsis yooj yim sua kom hloov ntaub ntawv siv qee yam thev naus laus zis thiab hloov mus rau lwm qhov.
Hloov chaw, hubs thiab lwm yam khoom siv zoo sib xws tso cai rau koj los sib txuas ob peb lub koos pij tawj mus rau hauv ib lub network, uas yog, lawv tsim qhov sib hu ua kev sib txuas ntawm cov khoom siv. Routers, nyeg, faib cov ntaub ntawv cov khoom thoob plaws khoos phis tawj, ntu ntu ntawm lub network.
Raws li qhov tshwm sim, cov cuab yeej ua haujlwm nyob hauv network kom ntseeg tau qhov kev tsim kho ntawm tus qauv cov ntaub ntawv faib tawm thiab ua rau tus neeg siv xa xov xwm thiab tau txais qee yam ntawm cov ntaub ntawv ntev dhau (uas yog, siv Is Taws Nem).
Cov khoom siv passive network
Raws li rau cov khoom siv passive network, nws tsis yog tsav los ntawm lub ntsiab thiab kis lub teeb liab yam tsis muaj kev ua kom nrov zog. Nws muab faib ua ob pawg: cov khoom siv, uas ua haujlwm raws li cov ntaub ntawv xa mus, thiab cov cuab yeej siv, uas yog ib hom ntawm cov kab ke rau cable. Thawj pab pawg feem ntau suav nrog: ntsaws kab, cab xov, thiab lwm yam. Pawg thib ob: cov cim qhwv caj dab, khi hlau, kaw thiab lwm yam khoom siv.
Yog li, nws hloov tawm tias nws yog lub network khoom siv nquag uas ua lub luag haujlwm tseem ceeb hauv kev tsim thiab txais lub teeb liab.
