7/24/2019 Answers - Operative Systems Arc

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3-Dbsore`c lc bstruoturc db uf sestbmc ipbrctevi tepi mquefc vertucl.

Lis sestbmcs ipbrctevis db Mquefcs Qertuclbs pripiroeifcf cl usucrei ufc oipec bxcotcdbl jcrdwcrb dbsfudi efoluybfdi sus midis usucrei y folbi, despisetevis db bftrcdc yscledc, eftbrrupoeifbs, clmcobfcmebfti, bto., llcmcdcs Mquefcs Qertuclbs, cpcrbftcfdics qub ocdc tbrmefcl pisbb su pripec mquefc rbcl.Bf uf sestbmc db mquefc vertucl sb bfoubftrc bl Hbrfbll dbfimefcdi mifetir db lc

mquefc vertucl. stb sb b!boutc si"rb bl jcrdwcrb #bfbrcfdi vcrecs mquefcs vertuclbs.Bl sestbmc ipbrctevi vertucl tebfb oimi ocpc ef$breir %bl jcrdwcrb& si"rb bl oucl sb b!boutcbl 'brfbll i folbi. (i"rb bstb jcrdwcrb sb bfoubftrc bl ()MQ %sestbmc #bfbrcdir dbmquefcs vertuclbs&, tcm"e*f llcmcdi jcrdwcrb vertucl, bl oucl bs bl bfocr#cdi dbmultepri#rcmcr muojcs mquefcs vertuclbs si"rb ufc mcquefc $seoc. (i"rb *stb sbbfoubftrcf lis sestbmcs ipbrctevis db ocdc ufc db lcs mquefcs vertuclbs bfocr#cdi dbrbcle+cr tidcs sus $ufoeifbs %cdmefestrcoef db clmcobfcmebfti, oiftril db bftrcdcs yscledcs, multepri#rcmcoef bto.&

- Cpleocoef db sbmairis cl midbli priduotir - oifsumedir, crmb uf bkbmpli dbcpleocoef.

/crc trcfsmeter ufc sb>cl vc bl sbm$iri, bl priobsi b!boutcr lc premetevc sbm(e#fcl%s&./crc rboe"er ufc sb>cl vc bl sbm$iri, bl priobsi b!boutcrc lc premetevc sbm3cet%s&0 se lcoirrbspifdebftb sb>cl fi sb jc trcfsmetedi tidcvc, bl priobsi sb suspbfdbr jcstc qublc trcfsmesef tbf#c lu#cr.(bm$iri ?iftcdir i )bfbrcl/crc oifsb#uer bl b$boti dbsbcdi, bl sbm$iri pubdb sbr vesti oimi ufc vcrec"lb qub oiftebfb uf vclirbftbri si"rb bl oucl sli bstf db$efedcs trbs ipbrcoeifbs42. 1f sbm$iri pubdb sbr efeoecle+cdi c uf vclir fi fb#ctevi.-. Lc ipbrcoef sbm3cet dborbmbftc bl vclir dbl sbm$iri. (e bl vclir pcsc c sbr fb#ctevi, bftifobs bl

priobsi qub bst b!boutcfdi sbm3cet sb "liqubc. Bf itri ocsi, bl priobsi oiftefc su b!bouoef.7. Lc ipbrcoef sbm(e#fcl eforbmbftc bl vclir dbl sbm$iri. (e bl vclir bs mbfir i e#ucl qub obri,

bftifobs sb dbs"liqubc ufi db lis priobsis "liqubcdis bf lc ipbrcoef sbm3cet.

(bm$iri :efcrei2. 1f sbm$iri "efcrei pubdb sbr efeoecle+cdi c 5 i 2.-. Lc ipbrcoef sbm3cet oimprub"c bl vclir dbl sbm$iri. (e bl vclir bs obri, bftifobs bl priobsi qub

bst b!boutcfdi sbm3cet sb "liqubc. (e bl vclir bs ufi, bftifobs sb ocm"ec bl vclir c obri y bl priobsioiftefc su b!bouoef.

7. Lc ipbrcoef sbm(e#fcl oimprub"c se jcy cl#f priobsi "liqubcdi bf bl sbm$iri. (e li jcy, bftifobssb dbs"liqubc ufi db lis priobsis "liqubcdcs bf lc ipbrcoef sbm3cet. (e fi jcy priobsis"liqubcdis, bftifobs bl vclir dbl sbm$iri sb pifb c ufi.

/crc cm"is sbm$iris oif oiftcdir y sbm$iris "efcreis, sb utele+c ufc oilc pcrcmcftbfbr lis priobsis bspbrcfdi pir bl sbm$iri./riduotir ?ifsumedir(Cpuftb)

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?-Dbsore`c lcs ocrcotbrsteocs db lc tofeoc db csefcoef db !"# dbfimefcdc dboilcs m$lteplbs oif rbclembftcoeif.Lc plcfe$eocoef sb rbcle+c oif bxpulsef %pir ridc!cs db tebmpi&, y sb utele+c ufmbocfesmi db preiredcdbs defmeoi.?ucfdi uf priobsi bftrc bf bl (estbmc, sb setc bf ?L5. ;bspu*s db su prembrcbxpulsef.,oucfdi vublvb cl bstcdi db Lesti, sb setc bf ?L2. ?cdc vb+ qub bs bxpulscdi,

sb setc bf lc se#uebftb oilc db mbfir preiredcd.1f priobsi oirti sb oimplbtcr db $irmc rpedc, sef llb#cr c me#rcr muy lb!is bf lc!brcrquc db oilcs db lestis. 1f priobsi ms lcr#i er db#rcdfdisb #rcduclmbftb. ;bbstc $irmc sb $cvirbob c lis priobsis fubvis ms oirtis si"rb lis ms veb!is y lcr#is.;bftri db ocdc oilc, bxobpti bf lc oilc db mbfir preiredcd, sb utele+c uf mbocfesmi8?8( %oilc tepeoc&. 1fc vb+ bf lc oilc db mbfir preiredcd, uf priobsi fi pubdbdbsobfdbr ms, pir li qub bs dbvublti c bstc oilc rbpbtedcs vbobs jcstc qub sb oifse#uboimplbtcr. ;b bstc $irmc, bstc oilc sb trctc oif ufc pilteoc db turfi ritctirei.

?irrbooeifbs c su emplbmbftcoef1f pri"lbmc qub prbsbftc bl bsqubmc semplb bs qub bl tebmpi db bstcfoec pcrc lis

priobsis ms lcr#is sb pubdb clcr#cr db $irmc clcrmcftb. /crc oimpbfscr bstbpri"lbmc, pidbmis vcrecr lis tebmpis db bxpulsef db ocdc oilc4 uf priobsi db lc oilc?L5 ?L< tebfb ufc ridc!c db ufc ufedcd db tebmpi0 uf priobsi db lc oilc ?L2 tebfb ufcridc!c db dis ufedcdbs db tebmpi. y cs suobsevcmbftb.=folusi cse#fcfdi ridc!cs db tebmpi mcyirbs c lcs oilcs db mbfir preiredcd, uf priobsi#rcfdb pubdb su$rer efcfeoef. 1fc pise"lb siluoef bs primivbr c lis priobsis c oilcs dbmcyir preiredcd dbspu*s db qub pcsbf uf dbtbrmefcdi tebmpi bspbrcfdi sbrveoei bf suoilc cotucl.

%-&ub bftebfdb pir priobsi, `liqub db oiftril db priobsi b 'eli (/riobsi4

1f pri#rcmc bf b!bouoef. 1fc efstcfoec db uf pri#rcmc b!boutcdi bf uf oimputcdir. Lc bftedcd qub sb pubdb cse#fcr y b!boutcr bf uf priobscdir. 1fc ufedcd db cotevedcd qub sb ocrcotbre+c pir lc b!bouoef db ufc sboubfoec db

efstruooeifbs, uf bstcdi cotucl, y uf oif!ufti db rboursis dbl sestbmc csioecdis.Bftedcd qub oifsestb bf uf fmbri db blbmbftis. Lis dis blbmbftis bsbfoeclbs sbrcf4ode#i db pri#rcmc y uf oif!ufti db dctis csioecdis c deoji ode#i.

:liqub db oiftril db priobsi4Bf ouclquebr efstcftb puftucl dbl tebmpi, mebftrcs bl priobsi bst bf b!bouoef, bstb

priobsi sb pubdb ocrcotbre+cr pir ufc sbreb db blbmbftis, efoluybfdi lis se#uebftbs4 =dbfte$eocdir. 1f edbfte$eocdir feoi csioecdi c bstb priobsi, pcrc destef#uerli dbl

rbsti db priobsis. Bstcdi. /reiredcd. 6evbl db preiredcd rblctevi cl rbsti db priobsis. ?iftcdir db pri#rcmc. Lc derbooef db lc se#uebftb efstruooef dbl pri#rcmc qub

sb b!boutcrc. /uftbris c mbmirec. =foluyb lis puftbris cl ode#i db pri#rcmc y lis dctis

csioecdis c deoji priobsi, cdbms db ouclquebr "liqub db mbmirec oimpcrtedioif itris priobsis.

;ctis db oiftbxti. Bstis sif dctis qub bstf prbsbftbs bf lis rb#estris dblpriobscdir oucfdi bl priobsi bst oirrebfdi.

=f$irmcoef db bstcdi db B9(. =foluyb lcs pbteoeifbs db B9( pbfdebftbs,despisetevis db B9( %pir b!bmpli, ufc ufedcd db oeftc& cse#fcdis c deoji priobsi

7/24/2019 Answers - Operative Systems Arc

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ufc lestc db lis $eojbris bf usi pir bl mesmi, bto. =f$irmcoef db cudetirc. /ubdb efoluer lc ocftedcd db tebmpi db priobscdir y db

tebmpi db rbli! utele+cdis, cse oimi lis lmetbs tebmpi, rb#estris oiftc"lbs, bto,Lc ef$irmcoef db lc lestc cftbreir sb clmcobfc bf ufc bstruoturc db dctis, qub sb sublbllcmcr "liqub db oiftril db priobsi %priobss oiftril "ix&, qub bl sestbmc ipbrctevi orbc y#bsteifc.

Njrbcd4 1fedcd db trc"c!i. =foluyb bl oiftbxti dbl priobscdir y su pripec crbc db dctis.(b b!boutcf sboubfoeclmbftb y sb pubdb eftbrrumper db $irmc qub bl priobscdir pubdcdcr pcsi c itri tjrbcd. 8ufoeifcledcd4 Lis jelis cl e#ucl qub lis priobsis tebfbf bstcdisdb b!bouoef y sb pubdbf seforife+cr bftrb bllis. C oiftefucoef sb cfcle+cf bstis discspbotis db lcs $ufoeifcledcdbs db lis jelis. Bstcdis db lis jelis. =#ucl qub oif lispriobsis lis prefoepclbs bstcdis db lic jelis sif4 B!boutcfdi, Lesti y :liqubcdi.)bfbrclmbftb, fi tebfb sbftedi cpleocr bstcdis db suspbfsef c uf jeli, yc qub deojisbstcdis sif oifobptis db fevbl db priobsi.

)-&ub bftebfdb pir pcefcoeif * pir 'epbrpcefcoeif (/c#efcoeif (bfoellc(upf#csb qub lc mbmirec prefoepcl sb devedb bf piroeifbs db tcmc>i $e!i rblctevcmbftbpbqub>is, y qub ocdc priobsi tcm"e*f sb devedb bf piroeifbs pbqub>cs dbl mesmitcmc>i $e!i. C deojcs piroeifbs dbl priobsi, oifioedcs oimi p#efcs, sb lbs cse#fcpiroeifbs despife"lbs db mbmirec, oifioedcs oimi mcrois, i mcrois db p#efcs. Bstcsbooef mubstrc qub bl bspcoei db mbmirec mcl#cstcdi pir ocdc priobsi db"edi c lc$rc#mbftcoef eftbrfc oirrbspifdb sli c ufc $rcooef db lc ltemc p#efc db uf priobsi.@epbrpc#efcoeif4Bf lc /c#efcoef pir dbmcfdc, sb trcb ufc p#efc c mbmirec oucfdi sb jcob rb$brbfoecc ufc derbooef setucdc bf bllc. ?ucfdi uf priobsi oimebf+c, sb priduob ufc fbobsedcd

#rcfdb db $cllis db p#efc. ?ucfti ms p#efcs sb trcbf dbl mesmi priobsi, cumbftc lcpri"c"eledcd db qub lcs rb$brbfoecs sb jc#cf si"rb p#efcs yc ocr#cdcs i qub sbrbsublvcf bf "csb cl prefoepei db liocle+coef, #bfbrcfdi qub muojcs p#efcs db!bf dbuscrsb. C mbdedc qub cvcfob bl tebmpi lcs $cllcs db p#efcs tbfdbrf c desmefuer. ?ucfdisb priduob uf $clli db p#efc, fi sb trcb sili lc rbqubredc sefi qub sb ocr#cf msp#efcs.

+-&ub oifdeoeifbs db`bf dcrsb pcrc qub sb prbsbftb bl abfmbfi dbeftbr`liqubi (

!ifdeoef db bolusef mutuc4 bxestbfoec db cl mbfis db uf rboursi oimpcrtedi pir lis priobsis, cloucl sli pubdb coobdbr ufi semultfbcmbftb.

!ifdeoef db rbtbfoef * bspbrc4 cl mbfis uf priobsi ^ejc cdqueredi uf rboursi Pe, y li rbtebfbmebftrcs bspbrc cl mbfis uf rboursi Pkqub yc jc sedi cse#fcdi c itri priobsi.!ifdeoef db fi bpripecoef4 lis rboursis fi pubdbf sbr bxpripecdis pir lis priobsis, bs dboer,lis rboursis sli pidrf sbr le"brcdis viluftcrecmbftb pir sus pripebtcreis.!ifdeoef db bspbrc oeroulcr4 dcdi bl oif!ufti db priobsis ^>...^m%su"oif!ufti dbl titcl dbpriobsis ire#efcl&,^>bst bspbrcfdi uf rboursi cdqueredi pir ^3, qub bst bspbrcfdi uf rboursicdqueredi pir ^0,... ,qub bst bspbrcfdi uf rboursi cdqueredi pir ^m, qub bst bspbrcfdi uf rboursicdqueredi pir ^>. Bstc oifdeoef empleoc lc oifdeoef db rbtbfoef y bspbrc.