"Taya" - wani cibiyar sadarwa topology: abũbuwan amfãni, disadvantages

Akuma a da dama daga cikin kamfanonin, yana yiwuwa su kusantar da hankali ga gaskiyar cewa cibiyar sadarwa akwai undeveloped a hanyoyi da dama - wani lokacin amfani da "star" wani wuri - "zobe", da kuma wani wuri - "hula". A cibiyar sadarwa topology ne quite karfi da tasiri da ingancin da kuma gudun data musayar tsakanin kwakwalwa, amma da yawa ne sau da yawa m daga cikin manyan abũbuwan amfãni, kuma disadvantages kowane zaɓi.

Mene ne wannan?

Duk da cewa wannan zabin ne ya fi kowa a yau, da kalmar "topology" ba kawai na samar da fasahar "hula". A cibiyar sadarwa topology ne kawai da ƙungiyar da dama kwakwalwa a wani cibiyar sadarwa, don haka shi za a iya kira a kama embodiment wannan Concepts matsayin sanyi ko tsarin da cibiyar sadarwa. Bugu da kari, manufar "topology" kammala babban adadin dokoki da sanin jeri na kwakwalwa, cabling fasaha da kuma girke na'urorin sadarwa, kazalika da yawa wasu abubuwa.

Abin da zai iya ta zama?

Don kwanan wata, akwai uku main zažužžukan ga irin wannan ci na kwakwalwa - wani "star", "zobe" da "dogo". A topology a kowane hali ne daban-daban daga wasu kuma ma yana da halaye da kuma abũbuwan amfãni. Wannan shi ne dalilin da ya sa yana da muhimmanci a san wadannan bayanai da jawabin da cibiyar sadarwa tsakanin kwakwalwa a kan wani musamman abu.

"Taya"

Bisa ga fasahar, "motar" topology azurta da yin amfani da guda na USB, da wanda ake hada da juna duk da workstations ana amfani.

Saboda haka, guda na USB da ake amfani da kowane tashar bi da bi, kuma duk sakonnin da aka aika zuwa wadannan tashoshin za a iya samu kuma saurari duk wani kwamfuta da cewa shi ne a kan hanyar sadarwa. Daga wannan ya kwarara dukkan workstations zabi kawai wadanda saƙonni cewa tun asali magana da su.

Mene ne abũbuwan amfãni?

Abũbuwan amfãni topology "hula" su ne kamar haka:

• A saitin ne musamman sauki ga wani ikon amfani.
• A tsarin ne quite sauki shigar da a lokaci guda yana sa da kalla kudi kudin, idan duk workstations suna located a takaice nisa tsakanin su.
• Idan karyewa ko yana farawa warware wani musamman tashar a kan hanyar sadarwa, duk da wasu ci gaba da aiki kamar yadda kafin ba tare da wani matsaloli.

Mene ne rashin amfani?

Akwai ma rashin topology "hula":

• Idan matsala ta auku a cikin wani wuri, nan take karya saukar da dukan cibiyar sadarwa gaba daya.
• Quite wuya a sami wani da matsaloli, ya kamata su tashi.
• Pretty matalauta yi idan aka kwatanta da sauran kimiyoyi. Wannan shi ne saboda topology na cibiyar sadarwa "hula" Bashir Ibrahim lokaci daya watsa bayanai daga daya kawai kwamfuta, da kuma idan wannan adadin aikin tashoshin qara, yi da rage-rage a layi daya to tamkar cibiyar sadarwa.
• Ba kyau sosai scalability. Don ƙara wani sabon workstation, kana bukatar ka maye gurbin sassan riga a yi amfani da "tayoyin".

Shi ne da fasahar amfani to connect kwakwalwa a kan wani gida cibiyar sadarwa ta amfani da coaxial na USB. A wannan yanayin, a matsayin "hula" amfani segments na coaxial na USB, hada tsakanin gazawar ta amfani da T-haši. "Taya" da aka aza gaba daya a fadin dakin, sa'an nan ta haɗu da kowane kwamfuta, da kuma fitarwa gefen connector aka saka a cikin connector saka a kan hanyar sadarwa katin.

Saboda gaskiya cewa irin wannan kayan aiki ne riga basu hakura daga ranar da tartsatsi cibiyar sadarwa topology "star", "motar" an kusan ba amfani, amma shi ne ga wannan rana za a iya samu a daban-daban Enterprises.

"The Zobe"

"Zobe" wakiltar wani topology na gida cibiyar sadarwa, bisa ga abin da duk daban-daban workstations hade tare a jerin, kafa gaba daya rufaffiyar da'irar. A irin wannan cibiyar sadarwa, data ake daukar kwayar cutar daga daya aikin tashar zuwa wani a cikin wani aure shugabanci, a cikinsa kowane kwamfuta aiki a matsayin repeater, yin retransmission sako zuwa gaba, fiili irin na baton. Irin wannan tsarin riga yana kadan da ya yi tare da abin da yake cikin topology na "kowa bas", sabili da haka yana mai yawa da fasali da kuma amfanin.

Mene ne abũbuwan amfãni?

• Computers kawai yanar-gizon.
• Kusan babu bukatar yin amfani da ƙarin kayan aiki.
• Yana yiwuwa a cimma barga aiki ba tare da wani appreciable fadowa gudun data watsa shirye-shirye tsanani cibiyar sadarwa load.
• Duk wani workstation da za a yi amfani da rayayye a cikin watsa bayanai tsari, kuma idan hutu ne a kalla daya kwamfuta ko a wani wuri zai karya na USB, dukan tsarin zai daina aiki gaba daya.
• Idan za ka gama da wani sabon workstation, da cibiyar sadarwa bukatar kashe a wani lokaci, saboda shi na bukatar bude da zobe a lokacin shigarwa na sabon kayan aiki.
• A tsarin ne wajen rikitarwa sanyi da kuma saituna.
• A taron na wasu Laifi ko da ga masana shi ne quite wuya a samu, abin da daidai ne matsalar.

Mene ne rashin amfani?

A dangane da wadannan rashinta yau ba haka sau da yawa samu don amfani da wani zobe topology, kuma mafi sau da yawa shi ya auku a cikin fiber-na gani networks Token Ring misali.

"Star"

Idan kowane workstation an haɗa kai tsaye zuwa tsakiyar naúrar, wanda da na'ura mai ba da hanya tsakanin hanyoyin sadarwa ko sauyawa zai iya bauta wa wannan topology "star." "Bus" da aka maye gurbinsu a kan lokaci da wannan musamman fasahar, tun da shi yana da mafi girma yi da kuma yadda ya dace. Wannan fasahar ta tanadi gudanar da duk fakitoci a cikin cibiyar sadarwa motsa kai tsaye zuwa tsakiyar naúra da kuma kowane kwamfuta ta hanyar da kansa cibiyar sadarwa katin an haɗa zuwa wannan canji gaba daya raba USB.

Idan dole, shi za a iya hada a cikin daya mahara networks amfani da topology bayyana, inda sakamakon wata cibiyar sadarwa sanyi ciwon itace topology. Tree topology ne rarraba a babban kungiyar, amma shi ne halin da mai yawan da fasali da kuma tausasãwa na aiwatar.

Topology "star" na yau da ake amfani a matsayin dalilin da gina kusan dukkanin gida cibiyoyin sadarwa, da kuma musamman, wannan shi ne sakamakon da dama daga cikin abũbuwan amfãni daga wannan fasahar na Networking kwakwalwa.

Mene ne abũbuwan amfãni?

• Idan ka karya duk wani takamaiman tashar (ko ta USB da aka lalace), aiki a general, dukan cibiyar sadarwa ba ya canzawa, wato, duk sauran kayan aiki ya ci gaba da aiki stably.
• Excellent scalability. Don haɗa wani sabon workstation, ku kawai bukatar sa a raba na USB daga canji.
• Kamar za a iya samu, sa'an nan troubleshoot ko wani karya a cikin cibiyar sadarwa.
• Musamman high yi, musamman a lokacin da idan aka kwatanta da wannan topology zabin.
• Perfect sauƙi daga saitin da kuma gwamnati na duk kayan aiki.
• A cibiyar sadarwa na iya zama da sauƙi gina ƙarin na'urorin.
• Idan tsakiya canza ta kakkarye, dukan cibiyar sadarwa tana daina aiki.
• Don amfani da cibiyar sadarwa hardware, kana bukatar ka ware ƙarin halin kaka, kamar yadda na bukatar sayan wani raba na'urar, wanda zai gama duk na kwakwalwa da alaka da cibiyar sadarwa.
• Yawan workstations iyakance yawan tashoshin jiragen ruwa amfani a cikin tsakiyar canji.

Mene ne rashin amfani?

A ranar, da "star" ne ya fi kowa fasahar for yau mai waya ko mara waya cibiyoyin sadarwa. A matsayin misali, a star topology iya wakiltar wani cibiyar sadarwa ta amfani da USB kamar "juya biyu", kazalika da wani canji, wanda shi ne mai tsakiyar na'urar. Yana da wadannan cibiyoyin sadarwa sukan yau za a iya samu a cikin ɗumbin mafiya yawan kamfanonin.

Topology da muhimmanci

A cibiyar sadarwa topology domin sanin ba kawai jiki wuri na kwakwalwa, amma, mafi mahimmanci, na samar da yanayin da dangantaka tsakanin su, kazalika da daban-daban halaye na siginar yaduwa ta hanyar da cibiyar sadarwa. Wannan yanayi ne na sadarwa iya sanin har zuwa abin da kuskure-m cibiyar sadarwa, da kuma koyi da ake bukata wuya daga cikin cibiyar sadarwa kayan aiki da kuma mafi dacewa sadarwa iko hanya, da kuma wasu sigogi. Idan adabi ne dauke da topology na gida networks "bas" ko wasu fasahar da za ta samar da hudu mabanbanta Concepts suke da dangantaka da daban-daban na cibiyar sadarwa gine :

• Jiki - kwamfuta tsari da kwanciya da igiyoyi ha su. A wannan hanya m "star" ba shi da wani bambance-bambance tsakanin mai aiki, dangane da wanda fasaha ne mafi sau da yawa ake magana a kai kawai a matsayin "star".
• Ma'ana - tsarin dangantaka, kazalika da iri a cikin abin da sakonni ana rarraba kan cibiyar sadarwa. Wannan definition of topology, watakila, za a iya kira mafi daidai.
• Exchange iko - da manufa, kazalika da jerin canja wurin na da hakkin ya karbi cibiyar sadarwa sadarwa tsakanin takamaiman kwakwalwa.
• Bayani - shugabanci na kwarara daga bayanai, wanda ake daukar kwayar cutar ta hanyar da cibiyar sadarwa.

Alal misali, cibiyar sadarwa da ciwon jiki da kuma ma'ana topology "hula" format iya amfani da a matsayin iko gudun ba da sanda watsa cibiyar sadarwa da fasaha kama 'yancin, da kuma samar da lokaci daya watsa bayanai ta musamman kwazo kwamfuta. Kuma shi ne a "star" fasahar a irin wannan abun.