Dab tsi yog qhov txawv?
Ib txoj hauv kev categorize cov sib txawv ntawm lub computer network tsim yog los ntawm lawv cov uas muaj los yog cov nplai. Rau keeb kwm yog vim li cas, txoj kev lag luam hauv kev lag luam hais txog txhua hom kev tsim ua ib qho ntawm cheeb tsam network . Cov hom phiaj ntawm tes hauj lwm yog:
- LAN - Local Area Network
- WAN - Wide Area Network
- WLAN - Wireless Area Network
- MAN - Metropolitan Area Network
- SAN - Chaw Thaj Tsa Network, Qhov System Area Network, Chaw Ua Haujlwm Hauv Zej Zog Network, lossis Qee Lub Chaw Zej Zog Me Hauv
- YUAV TSUM - Campus Area Network, Tswj Area Network, los sis qee lub chaw Network
- YIAS - Tej Cheeb Tsam Network
LAN thiab WAN yog ob hom thawj thiab zoo tshaj plaws-paub cov hauv pawg hauj lwm, thaum lwm tus tau tawm nrog technology kev nce qib
Nco ntsoov tias network hom sib txawv los ntawm network topologies (xws li tsheb npav, ntiv nplhaib thiab lub hnub qub). (Saib ntawm no - Kev taw qhia rau Network Topologies .)
LAN: Lub Hauv Paus Tsev Kawm Ntawv
Ib tug LAN txuas nrog cov cuab yeej network li ntawm ib qho luv luv nrug. Lub tuam tsev, tsev kawm ntawv, lossis tsev hauv tsev networked muaj xws li LAN, tab sis qee zaum ib lub tsev yuav muaj tsawg tus LANs (kab tias ib chav rau ib chav), thiab qee zaus LAN yuav khiav tawm ntawm cov tsev nyob ze. Hauv TCP / IP kev sib tham, LAN feem ntau tiam sis tsis tas siv raws li ib tus IP subnet nkaus xwb .
Ntxiv rau kev khiav hauj lwm hauv ib qho chaw tsawg, LANs kuj feem ntau yog tus tswv, tswj, thiab tswj los ntawm ib tug tib neeg lossis koom haum. Lawv kuj yuav siv tej yam kev sib txuas, feem ntau Ethernet thiab Token Nplhaib .
WAN: Qhov Chaw Sib Thoob Network
Raws li lub sij hawm siv, WAN spans lub cev muaj zog loj. Hauv Internet yog ntau tshaj plaws WAN, ib lub ntiaj teb.
Ib WAN yog ib qho teeb meem ntawm cheeb tsam ntawm LAN. Lub network ntaus ntawv hu ua tus router txuas rau LANs rau WAN. Hauv IP kev sib tham, tus router tswj tus lej LAN thiab WAN chaw nyob.
Ib qho WAN txawv los ntawm LAN hauv ntau txoj kev tseem ceeb. Feem ntau WANs (zoo li hauv Is Taws Nem) tsis yog muaj los ntawm ib lub koom haum tiam sis tsis muaj nyob hauv cov tswv cuab los sis cov tswv lag luam los sis kev faib tawm. WANs yuav siv technology xws li ATM , Txuas Txha thiab X.25 rau kev sib txuas ntev dua ntev dua.
LAN, WAN thiab Home Networking
Residences feem ntau ntiav ib tus LAN thiab txuas mus rau Internet WAN ntawm Internet Service Provider (ISP) siv ib tus xov tooj broadband . Qhov ISP muab qhov chaw nyob WAN IP rau lub modem, thiab tag nrho cov computers hauv tsev siv network siv LAN (yeem hu ua) tus IP chaw. Tag nrho cov computers hauv tsev LAN yuav sib txuas lus ncaj nraim nrog lwm tus, tiam sis yuav tsum mus los ntawm lub qhov rooj txuas nruab nrab ntawm qhov nruab nrab, feem ntau yog ib tus neeg siv kev sib txuas ntawm broadband , mus cuag ISP.
Lwm Hom Kev Ua Hauj Lwm Hauv Cheeb Tsam
Thaum LAN thiab WAN yog nyob deb ntawm qhov nrov tshaj plaws uas tau hais tseg, koj tuaj yeem pom cov references rau lwm tus neeg:
- Wireless Local Area Network - Ib tug LAN raws li Wi-Fi wireless network technology
- Metropolitan Area Network - Lub network txuas ib lub cev ntau dua li LAN tabsis tsawg tshaj li WAN, xws li lub nroog. Ib tug txiv neej feem ntau yog tus tswv thiab ua los ntawm ib qho chaw xws li ib lub koomhaum tseemfwv lossis lub koomhaum loj.
- Campus Area Network - Lub network txuas ntau LANs, tiam sis me dua tus txiv neej, xws li hauv tsev kawm ntawv lossis chaw lag luam hauv zos.
- Chaw Network - Txuas cov servers rau cov ntaub ntawv cia li siv los ntawm cov cuab yeej nyiam Fiber Channel .
- System Area Network (tseem hu ua Cluster Area Network) - Txuas cov kev siv computer uas muaj kev sib txuas nrog high-speed txuas hauv pawg tswj hwm.