LAN vs WAN
Thaum nws los txog kev sib tham, paub qhov txawv ntawm LAN thiab WAN yog qhov tseem ceeb heev. LAN yog ib lub computer network txwv rau thaj chaw me me xws li tsev, chaw ua haujlwm thiab tsev kawm ntawv thaum W AN yog lub network thoob plaws thaj chaw loj xws li lub nroog, lub tebchaws lossis thoob ntiaj teb. Internet yog ib qho piv txwv rau WAN. Ib cheeb tsam hauv cheeb tsam siv thev naus laus zis xws li Ethernet, Wi-Fi. Cov yam ntxwv ntawm LAN yog qhov kev kub ceev, tsawg qhov yuam kev, yooj yim hauv kev daws teeb meem, thiab tus nqi qis. WAN feem ntau yog raws li cov kab xauj tsev yog li lawv raug nqi ntau dua thaum qhov nrawm dua. Tsis tas li ntawd, vim qhov nyuaj, qhov ua yuam kev yog siab heev thiab kev saib xyuas yog qhov nyuaj.
LAN yog dab tsi?
LAN, uas yog hais txog thaj chaw hauv cheeb tsam, yog lub npe muab rau lub khoos phis tawj sib kis hauv thaj chaw txwv. Yog li cov khoos phis tawj uas muaj nyob hauv thaj chaw txwv xws li lub tsev, tsev kawm ntawv, lub tsev ua haujlwm tuaj yeem raug txheeb xyuas raws li cov chaw hauv cheeb tsam. Ob leeg xaim thiab wireless xov xwm tuaj yeem siv rau kev sib cuam tshuam qhov twg Ethernet dhau ob leeg twisted thiab Wi-Fi yog txoj hauv kev siv tshaj plaws rau LAN. Txij li thaum txwv rau ib cheeb tsam me me, tus nqi rau lub network yog qhov tsawg. Tsis tas li ntawd, qhov ceev yog siab, piv txwv li gigabit Ethernet tuaj yeem muab txog 1Gbps ceev. Niaj hnub no, thaum tsim nyog yuav tsum tau ceev dua, fiber ntau optical cables yog siv rau LANs, tab sis nws yog me ntsis kim. Tsis tas li ntawd, vim qhov xwm txheej ntawm lub network, qhov yuam kev thiab teeb meem kev sib txuas kuj tsawg dua thiab kev daws teeb meem yooj yim dua hauv LANs.
WAN yog dab tsi?
WAN, uas hais txog thaj chaw dav dav, yog lub khoos phis tawj sib txuas thoob plaws thaj chaw loj. Ib lub network thoob plaws ib lub nroog, ib lub teb chaws lossis ib lub network uas npog tag nrho lub ntiaj teb raug txheeb xyuas tias yog WAN. Piv txwv li, internet uas txuas cov khoom siv thoob plaws ntiaj teb yog WAN. WAN tuaj yeem siv los txuas ntau lub LANs, ib yam nkaus. Piv txwv li, xav txog ib lub txhab nyiaj network. Txhua lub tsev txhab nyiaj yuav muaj LAN thiab thoob plaws lub tebchaws yuav muaj ntau lub tuam tsev. Yog li, WAN yuav cuam tshuam cov ceg LANs thoob plaws lub tebchaws. Txoj kev siv ntau tshaj plaws rau kev sib txuas yog cov kab xauj. Ib txoj kab xauj tsev yog ib txoj kab kev sib txuas lus nyob nruab nrab ntawm ob lossis ntau qhov chaw los ntawm cov chaw muab kev pabcuam hauv internet sawv cev ntawm cov neeg siv khoom feem ntau yog xauj tsev txhua hli. Yog li, WAN yog tus nqi ntau dua thaum piv rau LAN thiab qhov sib txuas ceev yog tsawg dua thaum piv rau LAN. Tsis tas li ntawd, vim muaj qhov sib txawv loj, qhov yuam kev thiab teeb meem kev sib txuas yog qhov siab thiab kev daws teeb meem nyuaj. Cov kev cai xws li PPP, ISDN, X.25, Ncej relay, IPv4 thiab IPv6 yog siv rau WAN.
Qhov txawv ntawm LAN thiab WAN yog dab tsi?
• LAN hais txog thaj chaw hauv cheeb tsam network thaum WAN hais txog thaj chaw dav dav.
• LAN yog txwv rau thaj chaw me me xws li lub tsev, tsev, tsev kawm ntawv thiab chaw ua haujlwm. WAN kis thoob plaws ib lub nroog, lub tebchaws lossis thoob plaws ntiaj teb. Internet yog ib qho piv txwv rau WAN.
• LANs siv thev naus laus zis xws li Ethernet thiab Wi-Fi. Leased kab yuav tsum tau rau WAN.
• Kev sib kis ceev hauv LANs siab. Txawm li cas los xij, kev sib kis ceev ntawm WAN feem ntau qis.
• Tus nqi rau LAN yog qis dua tus nqi rau WAN.
• Tus lej ntawm qhov yuam kev hauv LAN tsawg dua li qhov yuam kev hauv WAN.
• Ib qho teeb meem hauv LAN yooj yim los daws teeb meem dua li qhov teeb meem hauv WAN. Tus nqi saib xyuas rau LAN yog tsawg dua tus nqi saib xyuas rau WAN.
• Kev sib tsoo hauv LAN feem ntau tsawg dua qhov kev sib tsoo hauv WAN.
• LAN tuaj yeem tsim nrog cov khoom siv sib txuas yooj yim xws li cov keyboards thiab hubs. Txawm li cas los xij, WAN xav tau cov khoom siv xws li routers thiab rooj vag. (Tab sis hnub no LANs ib yam nkaus muaj ntau lub subnets uas lawv yuav muaj routers thiab rooj vag ib yam nkaus.)
• Ib qho LAN feem ntau yog muaj thiab tswj los ntawm ib tus neeg lossis ib lub tuam txhab. Ntawm qhov tod tes, WAN yog tswv thiab tswj los ntawm ob peb tog.
Summary:
WAN vs LAN
A LAN yog lub khoos phis tawj network thoob plaws thaj chaw txwv xws li tsev, tsev kawm ntawv thiab chaw ua haujlwm. WAN yog ib lub network loj, uas txawm tias cuam tshuam cov LANs kis thoob plaws lub nroog, lub tebchaws lossis thoob plaws ntiaj teb. Internet kuj yog WAN. Lub LAN yog ib qho me me vim li no nws nrawm dua, tsis tshua muaj nqi, thiab tus lej yuam kev tsawg dua. Lawv yooj yim los daws teeb meem thiab tswj xyuas. Ntawm qhov tod tes, WANs xav tau cov kab xauj tsev yuav tsum tau muab tso rau hauv tej zaum los ntawm kev cog lus nrog ISP thiab, yog li ntawd, qhov ceev yog tsawg thiab tus nqi siab. Tsis tas li ntawd, txij li WAN yog lub kaw lus loj, qhov ua yuam kev tuaj yeem siab thaum qhov kev daws teeb meem nyuaj ua rau kev saib xyuas nyuaj dua.
