Topology "zobe": abũbuwan amfãni, kuma disadvantages

cibiyar sadarwa topology - a jiki da kuma a ma'ana hanyar hada wani rukuni na kwakwalwa a wani cibiyar sadarwa. Mafi na kowa cibiyar sadarwa topology - "hula", "Star", "zobe". Kowace daga cikinsu yana da abũbuwan amfãni, kuma disadvantages, kuma an yi amfani da dangane da halin da ake ciki. Dukan su ko ta wani hanya aka yi amfani a cikin shiri na zamani LANs. Bari mu dubi su key fasali, koyi da karfi da kuma kasawan kowane daga cikinsu.

"Taya"

Wannan irin shiri na samar da wani gida yankin cibiyar sadarwa ta amfani da guda na USB, da wanda gama a tsakãninsu duk amfani workstations. Kowace daga cikinsu ta aika wata sigina to duk kwakwalwa haɗa ta line, amma kawai wani ya karɓa data, da adireshin wanda aka nuna a cikin kunshin. Wasu kawai watsi da bayanai.

A topology "kowa bas" dole amfani terminators da suke a kan iyakar da babban USB da kuma matsattse sakonni shigar a cikinta don kauce wa su tunani. Ba tare da wadannan na'urori a cikin cibiyar sadarwa zai babu makawa zama wani rikici ya tashi, saboda wanda al'ada aiki ba zai yiwu ba. Hakika, rikice-rikice har yanzu bayyana, amma godiya ga terminators su lambar shi ne kadan. Idan duk wannan ya faru, da tashar kawai ne Yake aikõwar fakiti sake bayan wani bazuwar lokaci tazara tsare da algorithm.

Abũbuwan amfãni topology "hula"

Wannan sadarwar yana da abũbuwan amfãni a kan wasu hanyoyin. Daga cikin su - da low cost da kuma sauƙi na yi na halitta. Tsara wani gida cibiyar sadarwa ne mai sauki isa, amma kana bukatar ka isa wani "kowa dogo" da kuma gama da shi zuwa PC via musamman haɗawar. Wannan topology bukatar low amfani da cibiyar sadarwa na USB, tun da shi yana amfani da kawai kananan segments a haɗa "bas" ga workstation.

Shi ya sa hankali domin amfani da "na kowa bas" a kananan ofisoshin ko, conversely, a kan karauka a haɗa mahara networks tare. Daya amfani da wannan topology ne cewa a cikin hali na breakage na daya daga cikin cibiyar sadarwa yi ba ya shafa workstations. Sauran mahalarta iya ci gaba da aiki kamar yadda idan babu abin da ya faru. Idan ka haɗa wani sabon kwamfuta babu bukatar a dakatar da aiki na cibiyar sadarwa, wanda shi ne ma da indisputable amfani da "na kowa bas".

Disadvantages na "kowa bas"

Ko rashin amfani wannan topology suna lalacewa ta hanyar wannan dalilai kamar da abũbuwan amfãni. Alal misali, dangane da duk kwakwalwa tare da wata guda na USB muhimmanci rage da AMINCI na cibiyar sadarwa. Magudan ruwa "bas" a wani wuri zai kawo ƙarshen dukan tsarin. A networks da irin wannan topology yana da matukar wuya a gane asali matsalar. Wani debe "bas" ne ta low yawan aiki. All data na cibiyar sadarwa ne a kan wani aure na USB. Wannan ya sa shi ba zai yiwu ba ga aiki a high gudu.

Wani dutse a cikin lambu "kowa bas" - da dogaro da sauri a kan yawan kwamfutocin a kan hanyar sadarwa. Tun workstations da su domin sadarwa a kan wani guda sadarwar tashar, da mafi kwakwalwa za a haɗa da irin wannan cibiyar sadarwa ne, da ƙananan ta gudu. Wannan shi ne "kowa bas" ne da dace domin a kananan yawan nodes cewa ba su bukatar wani tsanani matakin tsaro. Bayan duk, aminci a irin wannan topology ne ma matsala. Gaskiyar ita ce, kowane abokin ciniki a cikin irin wannan cibiyar sadarwa yana da damar yin amfani da bayanai da sauran kwakwalwa.

Topology "zobe"

Wannan irin kungiyar na gida cibiyar sadarwa an tsara domin kowane kwamfuta an haɗa ta gaba, har da sarkar zai zama ruwan dare, forming wani zobe. The alama a cikin irin wannan cibiyar sadarwa kara a daya shugabanci daga daya kwamfuta zuwa wani, har ya kai gare shi da makõma, ita. Don sanin workstation ke watsa bayanai a halin yanzu yi amfani da alama. Computers aika da shi a cikin jũya sai, har sai ya samun da kumburi fata aika bayanai. Sa'an nan kuma ya aika wani fakiti na bayanai, daya bayan daya, ba tare da jiran tabbaci na ceto. A workstation na'am da bayanai, bi da bi, ya aika da wani rahoto a kan samu daga kunshin. A kan samu tabbaci na isar da kwamfuta aika da alama a cikin da'irar zuwa wani iya amfani da shi. A cikin wannan hanya unpretentious shirya cibiyar sadarwa topology "zobe". A wannan shiri, akwai biyu amfani ko rashin amfani.

Ribobi "zobe"

A amfani da wannan topology - a cikin sauki. Wannan cibiyar sadarwa ne mai sauqi ka yi da kuma ba ya bukatar dogon lokacin da kudin na USB. Igiyar wutan ne kawai ake bukata domin shigarwa daga daya kwamfuta zuwa wani, akwai wani ƙarin halin kaka. Har ila yau a cikin "zobe" na iya cimma babban gudun watsa bayanai, kamar yadda ya aika da fakiti ba ya bukatar ya jira rahoton isarwa.

Wani da tare da kama kungiyar networks - su iya samun mafi girma tsawon. Kamar haka babu bukatar su fadada da sigina ta amfani da ƙarin kayan aiki, kamar yadda kowane workstation updates, kuma ya mayar da data kanta. Amma ga sauki da kuma low cost da wannan topology boye flaws cewa sun yi ta amfani da shi ne mai iyaka.

Topology "Zobe": disadvantages

A shirya irin wannan cibiyar sadarwa dole ne a tuna da cewa ta AMINCI ne matalauci. Dalilin wannan shi ne cewa ta yi shi ne dogara a kan kowane kwamfuta da aka hada a cikinsa. Wancan ne, idan daya daga workstation karya saukar, dukan cibiyar sadarwa ceases zuwa aiki. Topology "Zobe" kuma ya nuna cewa to connect wani sabon kwamfuta, kana bukatar ka gaba daya dakatar da aiki na cibiyar sadarwa, da kuma shi ne sosai m duka biyu da gudanarwa da kuma masu amfani.

Wani dalili ba don amfani da wannan topology - low yawan aiki a lokacin da wani babban yawan workstations. Tun data ne kullum faruwa a kusa da da'irar, kowane sabon abokin ciniki cibiyar sadarwa slows saukar da aiki. Bugu da ƙari, wata kwamfuta iya sa tsohon cibiyar sadarwa kamar wani "zobe" musamman jinkirin gudun tare da la'akari da sauran zobe members. Duk wannan ƙwarai takaita yin amfani da wannan topology a yau networks, amma a wasu lokuta ta amfani ne wajaba a kansa.

"Star"

Kila fi na kowa cibiyar sadarwa topology - "Star". "The Zobe", tattauna a sama, an yi amfani da yawa kasa akai-akai, da kuma "kowa dogo" ma. A cibiyar sadarwa topology "star" workstations kai tsaye alaka zuwa wani dandali. Wannan muhimmin kashi na cibiyar sadarwa na iya zama duka aiki da kuma rage siginar da kuma m, wanda kawai na samar da wani jiki dangane na USB. The uwar garke kuma an haɗa zuwa wani dandali, kazalika da sauran kwakwalwa, abin da ya sa sadarwa mai sauqi tsakanin su.

Yawanci, da size da cibiyar sadarwa topology "star" da aka iyakance kawai da yawan tashoshin jiragen ruwa a kan cibiya, amma a rubuce kada ta kasance fiye da 1024, ko da yake yana da wuya su yi tunanin wani dandali da mafi mashigai. Ta hanyar wata cibiya wuce duk zirga-zirga a kan hanyar sadarwa na "star", don haka da cewa daga wannan na'urar dogara ne a kan AMINCI da kuma ingancinsu na dukan tsarin.

Ribobi topology "star"

Idan kana bukatar ka gina wani azumi ne kuma abin dogara cibiyar sadarwa ne mai kyau zabi - da topology na "star." "Zobe" ko "na kowa dogo" kuma za a iya amfani da a kan wasu sassa na cibiyar sadarwa. Ribobi "Star" - to ta AMINCI da sauki. Kowane workstation zo a raba ikon USB, wanda sosai dace da m. Tare da wannan a cikin irin wannan cibiyar sadarwa yana da matukar sauki gano da kuma gyara matsalar, kuma ta sabis daukan yawa ƙasa lokaci, kuma jijiyoyi. Idan ka haɗa sabon kwakwalwa zuwa cibiyar sadarwa na "star" shi rike ta yi da bambanci da sauran bambance-bambancen karatu na yi. Alal misali, topology na "zobe" ba a iya fariya irin wannan sassauci.

Gudun da cibiyar sadarwa topology "star" da aka iyakance kawai ta da damar da na USB iya aiki da kuma cibiya mashigai. Har ila yau, a cikin irin wannan cibiyar sadarwa, babu wani karo na daukar kwayar cutar bayanai. Kowane kwamfuta aika ta data via guda na USB. Idan kana bukatar wani babban cibiyar sadarwa, za ka iya hada mahara networks da topology na "star." Duk da dukan da abũbuwan amfãni, irin wannan sadarwar yana da nasa drawbacks.

Disadvantages na "taurari"

Idan cibiyar sadarwa topology "star" hutu cibiya, shi daina aiki. Irin wannan dogaro a kan wani guda kashi na tsarin muhimmanci rage da AMINCI na cibiyar sadarwa. Wata matsala - babban kudin shigarwa. Ga kowane workstation kasaftawa nasu na USB, wanda ake bukata rike da m. Saboda haka ga farashin da na USB za a iya kara kudin da ãyõyinMu, kuma kwanduna ga shi, kuma itace cewa "star" za kudin yafi tsada fiye da, misali, da topology na "zobe".

Wani hasara na topology na "star" - matsakaicin tsawon na USB zuwa workstation. Yana kada wuce 100 m, in ba haka ba da sigina za a raunana da kuma gurbata. Saboda haka, irin wannan ɗaukar hoto radius ba wucewa 200x200 mita. Don kara fadada buƙatar ƙara ƙarin Dandali cibiyar sadarwa.

hada topologies

Saboda haka kana saba da duk zabin, amma ba su yanke shawarar abin da kuke bukatar topology - "hula", "Star", "The Zobe"? Wannan ba abin mamaki bane, tun zamani networks sau da yawa bukatar a hade da topologies. Alal misali, mahara sabobin za a iya hada cikin wani "kowa dogo", amma kowanne daga cikinsu zai reshe cibiyar sadarwa topology "star". Dangane da aikin da na gida cibiyar sadarwa na'urar na iya zama mafi bambancin. Za ka iya samun wadannan zažužžukan a cikin abin da kowane kwamfuta da aka haɗa ta kowa da kowa, ko da yake yana da matukar rare. Wani mai ban sha'awa zaɓi - biyu "zobba", da ciwon daya Shared kwamfuta.

A Enterprises iya sau da yawa sami daban-daban topologies cikin guda ginin. A dukan cibiyar sadarwa za a iya gina a cikin wani nau'i na "star", amma a wasu ofisoshin shirya topology "zobe" ko "na kowa dogo". A manyan cibiyoyin sadarwa, da hade da daban-daban na cibiyar sadarwa kungiyar ne sau da yawa kadai zaɓi don warware matsalar. Bayan duk, a karshen, ko da abin da za ka yi - "star", "zobe", "motar". A cibiyar sadarwa topology bukatar warware m matsaloli. Afaretan cibiyar ne barga, kuma solves dukkan ayyuka danƙa shi? Sa'an nan ko da abin da topology da ake amfani a cikin halittar.