Video: Dab tsi yog txheej txheem tsim nyog?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Kev piav qhia. Tus neeg tawm tsam tau txais kev tswj hwm ntawm a txheej txheem uas yog muab elevated cov cai nyob rau hauv thiaj li yuav executing arbitrary code nrog cov cov cai . Ib txhia txheej txheem raug muab siab cov cai ntawm ib qho kev khiav hauj lwm, feem ntau yog los ntawm kev koom tes nrog ib tus neeg siv, pab pawg, lossis lub luag haujlwm.
Tsuas yog li ntawd, dab tsi yog tus account muaj cai?
A muaj cai account yog tus neeg siv tus account uas muaj cai ntau dua li cov neeg siv zoo tib yam. Cov nyiaj tshwj xeeb tej zaum, piv txwv li, tuaj yeem nruab lossis tshem tawm software, txhim kho lub operating system, lossis hloov kho qhov system lossis daim ntawv thov teeb tsa.
Kuj Paub, cov lus txib uas muaj cai yog dab tsi? kev cai lij choj . Abbreviation(s) and Synonym(s): Definition(s): A human-initiated lus txib ua tiav ntawm cov ntaub ntawv xov xwm uas cuam tshuam nrog kev tswj hwm, saib xyuas, lossis kev tswj hwm ntawm lub kaw lus suav nrog kev ua haujlwm ruaj ntseg thiab cov ntaub ntawv ntsig txog kev ruaj ntseg.
Qhov thib ob, dab tsi yog txheej txheem sandboxed?
Qhov no cais cov apps ntawm ib leeg thiab tiv thaiv cov apps thiab lub kaw lus los ntawm cov apps phem. Ua li no, Android muab tus neeg siv ID tshwj xeeb (UID) rau txhua tus Android daim ntawv thov thiab khiav nws hauv nws tus kheej txheej txheem . Cov sandbox yog qhov yooj yim, tshawb xyuas, thiab raws li kev sib cais ntawm UNIX-style cov neeg siv ntau xyoo txheej txheem thiab cov ntaub ntawv tso cai.
Qhov kev pab cuam muaj cai yog dab tsi?
A qhov kev pab cuam yog ib qho uas tuaj yeem muab cov neeg siv ntxiv cov cai dhau qhov uas twb muab rau lawv lawm. Namely, thaum cov neeg siv khiav passwd, lawv tuaj yeem hloov kho /etc/shadow. Ntxiv mus, cov neeg siv tsuas tuaj yeem hloov kho ib qho nkag hauv /etc/shadow, tab sis tsis yog lwm tus neeg nkag.
Pom zoo:
Dab tsi yog qhov tsis zoo ntawm cov txheej txheem txheej txheem?
Ib qho tsis zoo ntawm kev siv Procedural Programming raws li ib txoj hauv kev programming yog qhov tsis muaj peev xwm rov siv tau cov lej thoob plaws hauv qhov program. Yuav tsum rov sau tib hom code ntau zaus thoob plaws ib qho kev pab cuam tuaj yeem ntxiv rau tus nqi tsim kho thiab lub sijhawm ntawm qhov project. Lwm qhov tsis zoo yog qhov nyuaj ntawm kev kuaj xyuas yuam kev
Dab tsi yog qhov tsim qauv tsim qauv tsim thiab lub cev database tsim?
Logical database modeling suav nrog; ERD, daim duab ua lag luam, thiab cov ntaub ntawv tawm tswv yim rau cov neeg siv; whereasphysical database modeling suav nrog; server qauv daim duab, database tsim cov ntaub ntawv, thiab cov neeg siv cov ntaub ntawv tawm tswv yim
Qhov txheej txheem txheej txheem yog dab tsi?
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