Esikhathini sedijithali, ukuhlala uxhumekile kubaluleke kakhulu kunangaphambili. Amamodemu adlala indima ebalulekile ekusizeni ukufinyelela ku-inthanethi, okwenza ukuwaqonda kubaluleke kakhulu. Lesi sihloko sihlola ukuthi ayini amamodemu, asebenza kanjani, okuhle nokubi kwawo, futhi sinikeza isiqondiso ekukhetheni nasekusetshenzisweni.
Okuqukethwe:
– Iyini imodemu?
– Isebenza kanjani imodemu?
- Izinzuzo kanye nezithiyo zamamodemu
- Ungakhetha kanjani imodemu
– Isetshenziswa kanjani imodemu
Yini imodemu?
Imodemu, emfushane yemodulator-demodulator, iyingxenye ebalulekile yehadiwe endaweni yokuxhumana kwedijithali. Isebenza njengebhuloho phakathi kwenethiwekhi yakho yendawo kanye ne-inthanethi ebanzi. Ngokuguqula idatha yedijithali isuka kukhompuyutha ibe ifomethi efanelekile yokudluliselwa ngemigqa yokuxhumana ye-analogi, njengezintambo zocingo noma zekhebula, amamodemu enza kube lula ukuxhumana kwe-inthanethi. Le nqubo yokuguqula ibalulekile ekusebenzeni kwe-inthanethi njengoba siyayazi, okuvumela ukushintshana kwedatha okungenazihibe kumabanga amade.
Amamodemu eza ngezinhlobo ezahlukene, okuhlanganisa amadivayisi angaphandle axhumeka kukhompuyutha yakho noma irutha ngekhebula ye-Ethernet, namamodemu angaphakathi akhelwe ngokuqondile kumadivayisi. Kukhona futhi izinhlobo ezahlukene zamamodemu ezisuselwe endleleni yokuxhumana abayisebenzisayo, njenge-DSL (Ulayini Wokubhalisela Wedijithali), ikhebula, noma amamodemu e-fiber-optic. Uhlobo ngalunye lunezici zalo ezihlukile futhi luhambisana nezinhlobo ezithile zesevisi ye-inthanethi.
Ukuqonda indima nokusebenza kwamamodemu kubaluleke kakhulu kunoma ubani ofuna ukusungula noma ukuxazulula inkinga uxhumano lwe-inthanethi. Akuwona nje amapayipi angenzi lutho kodwa ababambiqhaza abakhuthele ekuxhumaneni kwedijithali, abenza izinqubo eziyinkimbinkimbi ukuqinisekisa ukuthi idatha idluliswa ngokunembile futhi yamukelwa kunethiwekhi yomhlaba wonke.
Isebenza kanjani imodemu?
Umsebenzi oyinhloko wemodemu ukushintshanisa nokwehlisa amasignali ukuze kudluliswe idatha. Ngomongo wokuxhumana kwe-inthanethi, lokhu kuhilela ukuguqula idatha yedijithali esuka kukhompuyutha yakho iye kumasiginali e-analogi angahamba ngemigqa yefoni evamile, amanethiwekhi ekhebula, noma uxhumo lwe-fiber-optic. Lapho ifika lapho iya khona, lawa masignali abe esehlehliswa abuyiselwe esimweni sedijithali ukuze idivayisi eyamukelayo ikwazi ukuchaza idatha.
Le nqubo iqala lapho kuthunyelwa isignali yedijithali isuka kukhompyutha yakho iye kumodemu. Imodemu imodela lesi siginali, iyilungiselela ukuthi idluliselwe endaweni ekhethiwe. Isibonelo, ohlelweni lwe-DSL, idatha yedijithali iguqulwa ibe ithoni yefrikhwensi ephezulu engadluliswa ngemigqa yocingo ngaphandle kokuphazamisa izinsiza zezwi. Uma idatha ifika lapho iya khona, imodemu eyamukelayo yehlisa isignali, iyiguqule ibuyele kufomethi yedijithali yekhompuyutha eyamukelayo noma inethiwekhi.
Ukulungisa iphutha nokuminyanisa nakho kuyingxenye yokusebenza kwemodemu. Le misebenzi iqinisekisa ukuthi idatha idluliswa kahle futhi ngokunembile, inciphisa umthelela wanoma yikuphi ukuphazamiseka okungaba khona noma ukuwohloka kwesignali ebangeni elide. Ngokusingatha le misebenzi eyinkimbinkimbi, amamodemu anika amandla ukuxhumana kwe-inthanethi okuthembekile nokusheshayo, ukuvala igebe phakathi kwamanethiwekhi endawo nengqalasizinda ye-inthanethi yomhlaba wonke.
Izinzuzo kanye nezithiyo zamamodemu
Amamodemu anikeza izinzuzo ezimbalwa, aqala ngokuvumela ukufinyelela ku-inthanethi. Bahlinzeka ngendlela yokuxhuma ku-inthanethi noma kuphi, kucatshangelwa ukutholakala kolayini wokudlulisa ohambisanayo. Ukwengeza, amamodemu esimanje aklanyelwe ukusekela uxhumo lwe-inthanethi olunesivinini esikhulu, okuvumela ukulandwa ngokushesha nokulayishwa kwedatha, ukusakazwa kwevidiyo enencazelo ephezulu, kanye nolwazi olushelelayo lwemidlalo ye-inthanethi.
Nokho, amamodemu nawo anezinkinga zawo. Umkhawulo owodwa obalulekile ukuncika kwabo ohlotsheni lwesevisi ye-inthanethi etholakala endaweni yangakini. Isibonelo, uma isifunda sakho sisekela i-DSL kuphela, ungase ungafinyeleli izivinini ezifana nomuntu onokufinyelela kuxhumo lwe-fiber-optic. Ngaphezu kwalokho, amamodemu angaphelelwa yisikhathi njengoba ubuchwepheshe buthuthuka, okudinga ukuthuthukiswa ukuze kuhambisane nezindinganiso ezintsha nezivinini ezinikezwa abahlinzeki besevisi ye-inthanethi.
Okunye okucatshangelwayo ukulinganiselwa ngokomzimba kwamamodemu. Badinga ukuxhumeka okuqondile kunethiwekhi yakho yomhlinzeki wesevisi ye-inthanethi, okungaba inselele ezindaweni ezikude noma ezinganakiwe. Ukwengeza, ikhwalithi yemodemu yakho ingathinta kakhulu ukuzinza nesivinini soxhumano lwakho lwe-inthanethi, ikwenze kubaluleke ukukhetha idivayisi ethembekile.
Indlela yokukhetha imodemu
Ukukhetha imodemu efanele kubalulekile ukuze uthuthukise ukuxhumeka kwakho kwe-inthanethi nokusebenza. Isinyathelo sokuqala ukunquma uhlobo lwesevisi ye-inthanethi etholakalayo endaweni yangakini, njengoba lokhu kuzosho uhlobo lwemodemu oyidingayo. Isibonelo, uma unesevisi ye-DSL, uzodinga imodemu ye-DSL. Kubalulekile futhi ukuthi uhlole nomhlinzeki wakho wesevisi ye-inthanethi nganoma yiziphi izidingo ezithile zemodemu noma izincomo.
Cabangela isivinini semodemu ngokuhlobene nohlelo lwakho lwe-inthanethi. Ukuthenga imodemu esekela isivinini esiphezulu kunohlelo lwakho lwamanje kungaba isu elihle lokuqinisekisa ikusasa, ikakhulukazi uma uhlela ukuthuthukisa isevisi yakho. Ukwengeza, bheka amamodemu anezici ezithuthukile njengamarutha akhelwe ngaphakathi, angenza ukusetha kwakho kube lula ngokuhlanganisa amadivaysi amabili abe yinye.
Okokugcina, cabangela isithunzi somkhiqizo kanye nemodeli yokwethembeka nokusekelwa kwamakhasimende. Ukufunda izibuyekezo nokufuna izincomo kunganikeza imininingwane ebalulekile ekusebenzeni kwemodemu kanye nokusabela komkhiqizi ezinkingeni. Ukukhetha imodemu esekelwa kahle kungakusindisa ekuphathweni ikhanda okungaba khona.
Indlela yokusebenzisa imodemu
Ukusebenzisa imodemu ngokuphumelelayo kuqala ngokufaka kahle. Lokhu ngokuvamile kubandakanya ukuxhuma imodemu kunethiwekhi yakho yomhlinzeki wesevisi ye-inthanethi ngomugqa wefoni, ikhebula, noma uxhumano lwe-fiber-optic. Uma usuxhunyiwe, uzodinga ukuxhuma imodemu kukhompyutha yakho noma umzila, ngokuvamile ngekhebula ye-Ethernet. Amanye amamodemu anikezela ngoxhumano olungenantambo, okukuvumela ukuthi uxhume amadivaysi ngaphandle kwezintambo.
Ukulungisa imodemu yakho isinyathelo esilandelayo. Lokhu kungase kuhlanganise ukufaka isofthiwe kukhompuyutha yakho noma ukufinyelela izilungiselelo zemodemu ngokusebenzisa isixhumi esibonakalayo sewebhu. Ngesikhathi sokusetha, ungamisa izilungiselelo ezihlukene, njengamagama enethiwekhi (SSID) kanye namaphasiwedi amamodeli angenawaya, ukuze uvikele uxhumano lwakho lwe-inthanethi.
Ukunakekelwa okuvamile, njengokubuyekeza i-firmware yemodemu nokuqapha ukusebenza kwayo, kungasiza ukuqinisekisa ukuthi iyaqhubeka nokusebenza kahle. Uma uhlangabezana nezinkinga zokuxhuma, izinyathelo zokuxazulula inkinga zingabandakanya ukuqala kabusha imodemu, ukuhlola ukuxhumana, noma ukuxhumana nomhlinzeki wakho wesevisi ye-inthanethi ukuze uthole usizo.
Isiphetho: Amamodemu angamathuluzi abalulekile emhlabeni wethu oxhumene, asebenza njengesango phakathi kwamanethiwekhi ethu endawo kanye nobubanzi be-inthanethi. Ngokuqonda ukuthi amamodemu asebenza kanjani, izinzuzo zawo kanye nemikhawulo, nokuthi ungakhetha kanjani futhi uwasebenzise ngempumelelo, ungaqinisekisa ukuxhumana kwe-inthanethi okuzinzile nokusheshayo. Noma ngabe okomsebenzi, okokuzijabulisa, noma ukuhlala nithintana, imodemu ethembekile iwukhiye ekuvuleni amandla aphelele e-inthanethi.
