Video: Dab tsi yog qhov txawv ntawm Classful addressing thiab classless addressing hauv IPv4?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
"Txhua tus IP chaw nyob muaj lub network thiab tus tswv tsev classful chaw nyob , lub network feem xaus ntawm ib qho ntawm cov dots sib cais hauv cov chaw nyob (ntawm ib thaj tsam octet). Classless chaw nyob siv tus lej sib txawv ntawm cov khoom siv rau lub network thiab cov tswv cuab feem ntawm cov chaw nyob ."
Ua raws li qhov no, qhov sib txawv ntawm qhov chaw nyob hauv IPv4 yog dab tsi?
Lub ntsiab qhov sib txawv ntawm classful thiab classlessaddressing yog tias classless chaw nyob tso cai rau faib IP chaw nyob zoo dua classfuladdressing . Txhua yam khoom siv hauv a network muaj tus IP chaw nyob . Ib tus IP chaw nyob muaj 32 ntsis. Txhua 8bits yog ib qho octet, thiab lawv tau sib cais los ntawm ib qho chaw.
Tsis tas li ntawd, Classful chaw nyob hauv IPv4 yog dab tsi? Classful chaw nyob faib tag nrho IP chaw nyob qhov chaw (0.0.0.0 mus rau 255.255.255.255) rau hauv 'chav kawm', lossis tshwj xeeb ntau yam ntawm qhov chaw nyob IP (tsis muaj chaw nyob uas ploj ntawm thawj zaug thiab kawg chaw nyob hauv qhov chaw).
Tsuas yog li ntawd, lub ntsiab lus ntawm classless addressing thiab Classful addressing yog dab tsi?
Classful thiab Classless Routing . Classless addressing thiab classful addressing xa mus rau ob txoj hauv kev los xav txog IP chaw nyob . Ob nqe lus hais txog qhov kev xav ntawm tus qauv ntawm tus IP subnetted chaw nyob . Classless chaw nyob siv ob feem saib ntawm IP chaw nyob, thiab chaw nyob hauv chav kawm muaj peb txoj kev saib.
Dab tsi yog qhov txawv ntawm chav kawm thiab tsis muaj chav kawm IP routing?
Hauv classful routing , nyob zoo lus tsis siv. Thaum nyob rau hauv classless routing , nyob zoo lus yog siv. Hauv classful routing , chaw nyob muab faib ua peb ntu uas yog: Network, Subnet thiab Host. Thaum nyob hauv classless routing , chaw nyob muab faib ua ob ntu uas yog: Subnet thiabHost.
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