Video: Qhov txawv ntawm Span thiab Rspan yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Lub ntsiab Qhov sib txawv ntawm SPAN thiab RSPAN yog cov kev sib raug zoo nruab nrab kev tso kawm ntawm SPAN Source ports, thiab cov SPAN Qhov chaw nres nkoj uas koj lub network saib xyuas (IDS, IPS, Wireshark Laptop, thiab lwm yam) txuas nrog. Qhov twg RSPAN tso cai rau koj decouple lub SPAN Destination los ntawm SPAN Cov chaw nres nkoj
Hauv qhov no, Span thiab Rspan yog dab tsi hauv kev sib tham?
Chaw nres nkoj mirroring ntawm Cisco Systems hloov feem ntau hu ua Switched Port Analyzer ( SPAN ) los yog Chaw Taws Teeb Hloov Chaw Ntsuas Ntsuas ( RSPAN ). Lwm tus neeg muag khoom muaj lub npe sib txawv rau nws, xws li Roving Analysis Port (RAP) ntawm 3Com keyboards.
Tsis tas li ntawd, SPAN tsheb khiav yog dab tsi? Port Mirroring, tseem hu ua SPAN (Switched Port Analyzer), yog ib txoj hauv kev saib xyuas lub network tsheb khiav . Nrog rau qhov chaw nres nkoj mirroring enabled, tus hloov pauv xa ib daim qauv ntawm tag nrho cov network packets pom ntawm ib qho chaw nres nkoj (los yog tag nrho VLAN) mus rau lwm qhov chaw nres nkoj, qhov twg cov pob ntawv tuaj yeem txheeb xyuas.
Tsis tas li ntawd, Rspan VLAN yog dab tsi?
RSPAN tso cai rau koj los saib xyuas kev khiav tsheb los ntawm cov chaw nres nkoj uas tau muab faib rau ntau lub keyboards, uas txhais tau hais tias koj tuaj yeem tswj hwm koj lub network ntes cov cuab yeej. RSPAN ua haujlwm los ntawm mirroring cov tsheb los ntawm qhov chaw nres nkoj ntawm ib qho RSPAN session rau a VLAN uas yog nplooj siab rau RSPAN kev sib tham.
Cov nqe lus twg muaj tseeb txog Span thiab Rspan?
SPAN tuaj yeem luam tawm cov tsheb khiav ntawm qhov chaw nres nkoj lossis qhov chaw VLAN mus rau qhov chaw nres nkoj qhov chaw ntawm tib qho kev hloov. SPAN tuaj yeem raug teeb tsa kom xa ib daim qauv ntawm cov tsheb mus rau qhov chaw nres nkoj ntawm tib qho kev hloov. RSPAN tuaj yeem siv los xa cov tsheb thauj mus los kom ncav cuag IPS uas txheeb xyuas kev tsheb khiav rau tus cwj pwm phem.
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