Video: Dab tsi yog qhov txawv ntawm khawb thiab nslookup?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
dig yog ib qho kev siv kab hais kom ua rau kev soj ntsuam DNS. Ob leeg dig thiab tus tswv tsev yog cov cuab yeej tsim los daws cov ntawv sau thiab simplicity-of-query teeb meem ntawm nslookup . nslookup yog thawj lub cuab yeej rau querying DNS. Nws yog ib qho CLI (command-line-interface) rau kev cuam tshuam nrog DNS.
Kuj paub tias, dig hais kom ua dab tsi?
khawb sawv cev rau (Domain Information Groper) yog kev tswj xyuas network lus txib -line cuab yeej forquerying Domain Name System (DNS) lub npe servers. Nws yog muaj txiaj ntsig zoo rau kev txheeb xyuas thiab daws teeb meem DNS teeb meem thiab tseem ua haujlwmDNS nrhiav thiab qhia cov lus teb uas tau xa rov qab los ntawm lub npe server uas tau nug.
Ib sab saum toj no, koj yuav ua li cas txheeb xyuas DNS server koj siv li cas? Cov DNS koj siv Hauv Windows 10, right-click ntawm Start menu thiab nyem rau Command Prompt. Hauv feem ntau lwm yam ntawm Windows, nyem rau ntawm Start, tom qab ntawd Txhua Qhov Kev Pabcuam, tom qab ntawd Accessories, thiab thaum kawg ntawm Commandprompt. Ntaus "ipconfig / all" ua raws li Enter. Koj 'yuav tau txais cov ntaub ntawv ntau.
Tsuas yog li ntawd, dab tsi yog qhov kev txiav txim khawb rau Windows?
“ dig ”yog ib tug robust lus txib -linetool tsim los ntawm BIND rau kev nug DNS npe servers. Nws tuaj yeem txheeb xyuas IP chaw nyob cov ntaub ntawv, sau cov nug txoj kev raws li itobtains cov lus teb los ntawm ib tug authoritative nameserver, kuaj xyuas lwm yam DNS teeb meem. CEEB TOOM: Qhov rai cov neeg siv tuaj yeem rub tawm thetool los ntawm BIND lub vev xaib.
nameservers ua dab tsi?
Nameservers yog ib feem ntawm DNS, uas sawv cev rau "Domain Name System." Hauv kev txiav txim siab, a npe server yog txhua tus neeg rau zaub mov uas muaj DNS software ntsia rau ntawm nws. Tab sis feem ntau, " npe server ” hais txog lub server muaj los ntawm lub vev xaib uas tshwj xeeb yog siv los tswj cov npe sau npe cuam tshuam nrog lawv lub vev xaib hosting cov neeg siv khoom.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov sib txawv hauv zos thiab thoob ntiaj teb hauv SQL Server?
Qhov sib txawv hauv zos tau tshaj tawm hauv ib qho kev ua haujlwm whereas Ntiaj teb hloov pauv tau tshaj tawm sab nraum lub luag haujlwm. Cov kev hloov hauv zos tau tsim thaum lub luag haujlwm tau pib ua tiav thiab ploj thaum lub luag haujlwm xaus, ntawm qhov tod tes, Ntiaj teb hloov pauv yog tsim raws li kev tua pib thiab ploj thaum qhov kev pab cuam xaus
Dab tsi yog qhov sib txawv ntawm lub thawv thiab lub thawv ntawv thiab lub thawv ntawv yog dab tsi?
Ib lub thawv thiab cov ntawv nplawm (qee zaum hu ua boxplot) yog ib daim duab uas nthuav tawm cov ntaub ntawv los ntawm tsib lub ntsiab lus. Nyob rau hauv ib lub thawv thiab whisker zajlus: qhov kawg ntawm lub thawv yog lub sab sauv thiab sab quartiles, yog li lub thawv spans lub interquartile ntau yam. qhov nruab nrab yog cim los ntawm ib txoj kab ntsug hauv lub thawv
Dab tsi yog qhov txawv ntawm cov ntaub ntawv hom thiab qhov sib txawv?
Ib qho kev sib txawv yuav tsum muaj cov ntaub ntawv sib txuas nrog nws, piv txwv li nws tuaj yeem muaj cov ntaub ntawv xws li cov lej, lej lej, cov cim thiab lwm yam. Qhov sib txawv ntawm hom Integer khaws cov lej suav thiab tus cim typevariable khaws cov cim tus nqi. Thawj qhov sib txawv ntawm ntau hom ntaub ntawv yog lawv qhov loj me me
Dab tsi yog qhov zoo sib xws thiab qhov txawv ntawm relays thiab PLC yog dab tsi?
Relays yog electro-mechanical keyboards uas muaj coil thiab ob hom kev sib cuag uas tsis yog NO & NC. Tab sis Programmable Logic Controller, PLC yog lub khoos phis tawj me uas tuaj yeem txiav txim siab raws li qhov kev zov me nyuam thiab nws cov tswv yim & tso tawm
Dab tsi yog qhov sib txawv ntawm qhov ntsuas qhov ntsuas thiab qhov ntsuas thib ob?
Primary index: nyob rau hauv ib tug sequentially order file, qhov Performance index uas nws search key qhia cov sequential order ntawm cov ntaub ntawv. Kuj hu ua clustering index. Secondary index: ib qho Performance index uas nws qhov tseem ceeb tshawb nrhiav qhia qhov kev txiav txim sib txawv ntawm qhov kev txiav txim ntawm cov ntaub ntawv. Kuj hu ua non-clustering index