Ib txoj hauv kev los txheeb xyuas ntau hom kev sib txawv ntawm lub khoos phis tawj tsim qauv yog los ntawm cov peev txheej lossis qhov ntsuas ntawm lub network. Rau keeb kwm vim li cas, kev lag luam kev sib txuas yog hais txog yuav luag txhua hom kev tsim raws li qee hom cheeb tsam network.
Network hom txawv ntawm network topologies (xws li tsheb npav, nplhaib, thiab hnub qub).
Type of Area Networks
hom kev sib txuas hauv cheeb tsam yog:
- LAN: Local Area Network
- WAN: Wide Area Network
- WLAN: Wireless Local Area Network
- MAN: Metropolitan Area Network
- SAN: Chaw Thaj Chaw Network, System Area Network, Server Area Network, lossis qee zaum Me Chaw Network
- CAN: Campus Area Network, Controller Area Network, lossis qee zaum Cluster Area Network
- PAN: Personal Area Network
LAN thiab WAN yog ob pawg thawj thiab paub zoo tshaj plaws ntawm thaj chaw sib koom tes, thaum lwm tus tau tshwm sim nrog kev siv thev naus laus zis.
LAN: Local Area Network
A LAN txuas cov khoom siv hauv lub network hla qhov luv luv. Ib lub tsev ua haujlwm sib txuas, tsev kawm ntawv, lossis tsev feem ntau muaj ib lub LAN, txawm hais tias qee lub tsev muaj ob peb lub LANs me me (tej zaum ib chav), thiab qee zaus LAN nthuav tawm ib pawg ntawm cov tsev nyob ze. Hauv TCP / IP networking, LAN feem ntau, tab sis tsis yog ib txwm, siv raws li ib tus IP subnet.
Ntxiv rau kev ua haujlwm hauv qhov chaw txwv, LANs kuj feem ntau muaj, tswj hwm, thiab tswj hwm los ntawm ib tus neeg lossis koom haum. Cov tes hauj lwm no tseem nyiam siv qee yam kev sib txuas thev naus laus zis, feem ntau Ethernet thiab Token Ring.
WAN: Wide Area Network
A WAN nthuav dav lub cev qhov deb. Is Taws Nem yog WAN loj tshaj plaws, hla lub ntiaj teb.
A WAN yog qhov chaw sib cais ntawm LANs. Lub network ntaus ntawv hu ua router txuas LANs rau WAN. Hauv kev sib tham IP, tus router tswj ob qhov chaw nyob LAN thiab WAN chaw nyob.
A WAN txawv ntawm LAN hauv ntau txoj hauv kev tseem ceeb. Feem ntau WANs (xws li internet) tsis yog los ntawm ib lub koom haum. Hloov chaw, WANs muaj nyob rau hauv kev sib sau lossis faib ua tswv cuab thiab kev tswj hwm.
WANs nyiam siv thev naus laus zis xws li ATM, Ncej Relay, thiab X.25 rau kev sib txuas ntev dua.
LAN, WAN, thiab Kev Sib Tham Hauv Tsev
Residences feem ntau ntiav ib qho LAN thiab txuas rau Is Taws Nem WAN los ntawm tus muab kev pabcuam hauv internet (ISP) siv lub broadband modem. ISP muab WAN IP chaw nyob rau lub modem, thiab txhua lub khoos phis tawj hauv tsev siv LAN IP chaw nyob (tseem hu ua tus IP chaw nyob).
Txhua lub khoos phis tawj ntawm lub tsev LAN tuaj yeem sib txuas lus ncaj qha rau ib leeg tab sis yuav tsum mus dhau ntawm lub rooj sib tham hauv nruab nrab, feem ntau yog lub router broadband, kom ncav cuag ISP thiab dhau mus.
Lwm Hom Hauv Cheeb Tsam Networks
Thaum LAN thiab WAN yog hom network nrov tshaj plaws, koj tuaj yeem pom cov ntaub ntawv hais txog lwm tus:
- Wireless Local Area Network: LAN raws li Wi-Fi wireless network technology.
- Metropolitan Cheeb Tsam Network: Ib lub network hla thaj chaw lub cev loj dua LAN tab sis me dua WAN, xws li lub nroog. Tus txiv neej feem ntau yog tus tswv thiab ua haujlwm los ntawm ib lub koom haum xws li tsoomfwv lub koomhaum lossis lub koomhaum loj.
- Campus Area Network: Ib lub network txuas nrog ntau lub LANs tab sis me dua tus txiv neej, xws li hauv tsev kawm qib siab lossis chaw lag luam hauv zos.
- Personal Area Network: Lub network uas nyob ib puag ncig ib tus neeg. Lub wireless pan (WPAN) tej zaum yuav tsim los ntawm Bluetooth li.
- Chaw Thaj Chaw Network: Txuas servers rau cov ntaub ntawv khaws cia los ntawm thev naus laus zis zoo li Fiber Channel.
- System Area Network (tseem hu ua Cluster Area Network, lossis CAN): Txuas cov khoos phis tawj ua haujlwm siab nrog kev sib txuas siab ceev hauv pawg teeb tsa.
- Passive Optical Local Area Network: POLAN pab fiber ntau los ntawm kev siv fiber ntau optic splitters kom tso cai rau ib qho fiber ntau kho qhov muag los pab ntau yam khoom siv.
Ib ob peb lwm hom network uas tsom rau kev sib koom tes ntiag tug suav nrog virtual private networks (VPNs) thiab kev lag luam ntiag tug network (EPNs).
