Video: Dab tsi yog qhov sib txawv loj ntawm kev txheeb xyuas qhov yuam kev thiab kev kho cov lej yuam kev?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ob leeg kev tshawb nrhiav yuam kev thiab kev kho yuam kev xav tau qee cov ntaub ntawv redundant xa nrog cov ntaub ntawv tiag tiag; kho xav tau ntau tshaj kuaj pom . Parity khoom yog ib txoj hauv kev yooj yim rau cov kuaj pom ntawm yuam kev . Ib qho parity me ntsis yog ib qho ntxiv me ntsis xa nrog cov ntaub ntawv uas tsuas yog 1-ntsis suav ntawm cov ntaub ntawv.
Ntawm no, qhov sib txawv ntawm kev kho qhov yuam kev thiab kev tshawb nrhiav qhov yuam kev yog dab tsi?
Kev tshawb nrhiav yuam kev yog cov kuaj pom ntawm yuam kev tshwm sim los ntawm Suab nrov los yog lwm yam kev puas tsuaj thaum lub sij hawm kis tau tus mob ntawm lub transmitter mus rau lub receiver. Kev kho yuam kev yog cov kuaj pom ntawm yuam kev thiab reconstruction ntawm tus thawj yuam kev cov ntaub ntawv dawb lossis teeb liab [1] [2].
Tsis tas li ntawd, hom kev ua yuam kev kho cov lis dej num yog dab tsi? Daim ntawv teev cov lej kho qhov yuam kev
| Nyob deb | Code |
|---|---|
| 2 (ib qho yuam kev nrhiav pom) | Parity |
| 3 (kev kho ib qho yuam kev) | Triple modular redundancy |
| 3 (kev kho ib qho yuam kev) | Hamming zoo xws li Hamming (7, 4) |
| 4 (SECDED) | Extended Hamming |
Dhau li ntawm qhov no, peb txhais li cas los ntawm kev tshawb nrhiav qhov yuam kev thiab kho cov lej?
Kev txheeb xyuas yuam kev & Kho Cov Cai . Kev tshaj tawm. Peb paub tias cov khoom 0 thiab 1 sib raug rau ob qhov sib txawv ntawm cov analog voltages. Yog li, thaum sib kis ntawm binary cov ntaub ntawv los ntawm ib qho system mus rau lwm qhov, lub suab nrov kuj yuav raug ntxiv. Vim qhov no, tej zaum yuav muaj yuam kev hauv cov ntaub ntawv tau txais ntawm lwm qhov system.
Vim li cas thiaj nrhiav tau qhov yuam kev thiab kho kom raug?
Lub hauv paus ntsiab lus hauv kuaj pom los yog kho qhov yuam kev yog redundancy. Yuav tau ntes los yog raug yuam kev , peb xav tau xa qee cov khoom ntxiv nrog peb cov ntaub ntawv. Cov khoom redundant no ntxiv los ntawm tus xa thiab tshem tawm los ntawm tus txais. Lawv lub xub ntiag tso cai rau tus txais ntes los yog yog lawm corrupted khoom.
Pom zoo:
Dab tsi yog qhov txawv ntawm kev tswj qhov xwm txheej thiab kev tswj xyuas qhov xwm txheej loj?
Yog li MI yog hais txog kev lees paub tias qhov xwm txheej ib txwm muaj thiab Kev Tswj Xyuas Teeb Meem yuav tsis txiav nws. Ib qho xwm txheej loj yog kev tshaj tawm ntawm lub xeev xwm txheej ceev. Ib qho xwm txheej loj yog nruab nrab ntawm qhov xwm txheej ib txwm muaj thiab kev puas tsuaj (qhov twg IT Service Continuity Management txheej txheem pib)
Dab tsi yog qhov sib txawv ntawm cov ntaub ntawv sib sau ua ke thiab cov ntaub ntawv tsis sib xws?
Kev sib sau cov ntaub ntawv yog sau thiab sau cov ntaub ntawv; kom disaggregate cov ntaub ntawv yog rhuav tshem cov ntaub ntawv sib sau ua ke rau hauv cov khoom siv lossis cov ntaub ntawv me me
Dab tsi yog qhov sib txawv ntawm kev sib txuas lus taw qhia thiab kev sib txuas tsis raug cai?
Qhov txawv: Kev sib txuas lus taw qhia thiab kev sib txuas tsis muaj kev sib txuas Kev sib txuas lus taw qhia kev sib txuas ua rau muaj kev sib txuas thiab xyuas seb cov lus puas tau txais lossis tsis tau thiab xa rov qab yog tias muaj qhov yuam kev tshwm sim, thaum qhov kev pabcuam tsis sib txuas tsis tau lees tias xa xov
Dab tsi yog qhov txawv ntawm kev sib raug zoo unary kev sib raug zoo binary thiab kev sib raug zoo ternary?
Kev sib raug zoo tsis sib xws yog thaum ob tus neeg koom hauv kev sib raug zoo yog tib lub koom haum. Piv txwv li: Cov ncauj lus yuav yog qhov yuav tsum tau ua ua ntej rau lwm yam kev kawm. Kev sib raug zoo ternary yog thaum peb lub koom haum koom nrog kev sib raug zoo
Dab tsi yog qhov sib txawv tseem ceeb ntawm kev sib txuas lus tsis sib xws thiab kev sib txuas lus taw qhia?
1. Hauv kev sib txuas lus tsis muaj kev sib txuas lus tsis tas yuav tsim kev sib txuas ntawm qhov chaw (sender) thiab qhov chaw (receiver). Tab sis nyob rau hauv kev sib txuas-taw qhia kev sib txuas lus kev sib txuas lus yuav tsum tau tsim ua ntej hloov cov ntaub ntawv