Qhov siab tshaj plaws kev ceev ntawm lub Internet, muaj nyob rau hauv ib niaj hnub siv tshuab

Ib tug ntawm cov seemingly yooj yim cov lus nug, uas yog tsis muaj tseem teb raws li nram no: "Yuav ua li cas yog lub siab tshaj plaws kev ceev ntawm cov ntaub ntawv pauv ntawm ob computer systems?" Piv txwv li, nws yog lub npe hu hais tias nyob rau hauv lub moj khaum ntawm lub Japanese hom kev kawm ntawm cov ntaub ntawv hloov lwm lub tsev tau raug mob ntawm computers ntawm speeds ntawm ntau tshaj ob terabytes ib ob (20 terabits ib 2012). Txawm li cas los, tus nqi ntawm kev siv xws li ib tug tov yog siab dhau heev lawm, uas tsis ua technology xov xwm. Xws li ib tug zoo tshwm sim yog cov ntau ntawm tshwj xeeb computer systems thiab network khoom prototypes. Lub zoo tib yam computer tswv xav nyob rau hauv cov nqe lus nug ntawm yog dab tsi lub siab tshaj plaws kev ceev ntawm lub Internet, lub tswv yim yog ib txoj kev los sis lwm tus kws khomob.

xav tau

Lub volume ntawm niaj hnub software pob khoom thiab multimedia ntaub ntawv yog nce ntawm ib qho zoo kawg npaum li cas. Piv txwv li, yog hais tias tus faib rau cov paub qhov rais XP operating system yog muab tso rau ib tug standard 700MB CD, tom ntej versions yuav tsum tau DVD (cov los yog kiag li). Nws yog pom tseeb tias nyob rau hauv thiaj li yuav txo lub sij hawm siv rau cov ntaub ntawv hloov lwm lub tsev , lub siab tshaj plaws kev ceev ntawm lub network yuav tsum tau nce. Txwv tsis pub, ua hauj lwm nrog ntau network kev pab yuav los ua ib tug khoom expectation ntawm tiav ntawm lub hloov lwm lub tsev txheej txheem.

Maximum ceev ADSL

Ib tug technology, uas yog tseem lug siv los ntawm ib co cov neeg siv, qhov no yog ADSL. Nws yog ib tug dial-up kev twb kev txuas hom kev loj hlob. Nws yuav siv lub uas twb muaj lawm hauv xov tooj kab. PBX muab kev pab kom teem ib tug tshwj xeeb ntaus ntawv - DSLAM. Neeg yuav rau nws ib feem txuas mus rau lub computer rau qhov tsim nyog modem. DSLAM yog ib tug intermediary ntawm cov kev pauv thiab cov neeg yuav khoom. Muab piv nrog rau tshwj xeeb cable kev daws teeb meem kom zoo dua yog hais tias yog koj muaj ib tug landline xov tooj, thiab ib tug tsim nyog muab kev pab, lub Internet kev twb kev txuas yuav nqa tawm sai li sai tau.

Qhov siab tshaj plaws ceev ntawm xws li ib tug kev txiav txim siab yog nyob ntawm tus yam ntxwv ntawm txoj kab, txoj kev npaj thiab cov khoom siv tuition. Yog li, rau standard ADSL ITU G.992.1 Annex A (B) «qab nthab" txhaj ceev yog 12 Mbps, thiab rov qab - 1.3 Mbps (channel yeej ib txwm asynchronous). Tab sis rau ib tug paub tshuaj ADSL2 + (hom ITU G.992.5 Annex M) tus nqi nce mus rau 24 / 3.5 Mbps, ntsig txog. Feem ntau cov tsev neeg siv yuav cia siab rau 8/1 Mbps nyob zoo.

wired analogue

Tam sim no, ntau nrov dlaws rau lub hauv paus ntawm cov khub thiab kho qhov muag mus. Nyob rau hauv thawj cov ntaub ntawv, cov tooj liab conductors ntawm cov cable ntaub ntawv yog kis tau ntawm cov nqi mus txog rau 100 Mbps. Gigabit speeds muaj rau tib yam cov neeg siv tsuj tsawg li yuam kev txwv rau qhov ntev ntawm lub cable feem los ntawm cov dispenser mus rau lub neeg yuav computer. Ntau npaum li cas sophisticated kab tsim rau lub hauv paus ntawm kho qhov muag kab yuav kis raws fiber tsawg kawg yog 10 Gb ntawm cov ntaub ntawv, thiab muab tau ntawm compacting tus xov tooj ntawm raws nyob rau hauv ib tug fiber, tag nrho cov kis tus nqi yuav ntsuas terabits. Thaum txuas mus rau fiber optic tes hauj lwm feem ntau yog muab los ntawm tus neeg siv 100 megabits mus rau 1 gigabit.

wireless mus

Tsaug rau cov loj hlob ntawm portable kev sib txuas lus kiag li lawm rau ntau tshwj xeeb kev txaus siab yog tus ua rau lo lus nug ntawm yog dab tsi lub siab tshaj plaws kev ceev ntawm Wi-nkaus. Tam sim no nws yog mus rau 140 Mbps (txawm rau 802.11n pab kiag li lawm hais 300 Mbit / s). Tej yam loj loj nyob rau hauv lub ceev tuition ntawm wireless kev sib txuas lus kab muaj obstacles (phab ntsa, thiab lwm yam) Yog nruab nrab ntawm cov pab kiag li lawm.