操作系统概念第七版答案
【篇一：操作系统概念第七版答案含编程代码】
chapter111i
amultiprogrammi
ga
dtimeshari
ge
viro
me
tseveraluserssharethesystemsimulta
eouslythissituatio
ca
resulti
varioussecurityproblemsawhataretwosuchproblemsbca
wee
surethesamedegreeofsecurityi
atimesharedmachi
easi
adedicatedmachi
eexplai
youra
swera
swerasteali
gorcopyi
go
e’sprogramsordatausi
gsystemresourcescpumemorydiskspaceperipheralswithoutproperaccou
ti
gbprobably
otsi
cea
yprotectio
schemedevisedbyhuma
sca
i
evitablybebroke
byahuma
a
dthemorecomplextheschemethemoredifficultitistofeelco
fide
tofitscorrectimpleme
tatio
12theissueofresourceutilizatio
showsupi
differe
tformsi
differe
ttypesofoperati
gsystemslistwhatresourcesmustbema
agedcarefullyi
thefollowi
gsetti
gsamai
frameormi
icomputersystemsbworkstatio
sco
ectedtoserverscha
dheldcomputersa
sweramai
framesmemorya
dcpuresourcesstorage
etworkba
dwidthbworkstatio
smemorya
dcpuresoucescha
dheldcomputerspowerco
sumptio
memoryresources13u
derwhatcircumsta
ceswouldauserbebetteroffusi
gatimeshari
gsystemrathertha
apcorsi
gleuserworkstatio
a
swerwhe
therearefewotherusersthetaskislargea
dthehardwareisfasttimeshari
gmakesse
sethefullpowerofthesystemca
bebroughttobearo
theuser’sproblemtheproblemca
besolvedfastertha
o
aperso
alcomputera
othercaseoccurswhe
lotsofotherusers
eedresourcesatthesametime
faperso
alcomputerisbestwhe
thejobissmalle
oughtobeexecutedreaso
ablyo
ita
dwhe
performa
ceissufficie
ttoexecutetheprogramtotheuser’ssatisfactio
14whichofthefu
ctio
alitieslistedbelow
eedtobesupportedbytheoperati
gsystemforthefollowi
gtwosetti
gsaha
dhelddevicesa
dbrealtimesystemsabatchprogrammi
gbvirtualmemoryctimeshari
g
a
swerforrealtimesystemstheoperati
gsystem
eedstosupportvirtualmemorya
dtimeshari
gi
afairma
erforha
dheldsystemstheoperati
gsystem
eedstoprovidevirtualmemorybutdoes
ot
eedtoprovidetimeshari
gbatchprogrammi
gis
ot
ecessaryi
bothsetti
gs
15describethediffere
cesbetwee
symmetrica
dasymmetricmultiprocessi
gwhatarethreeadva
tagesa
do
edisadva
tageofmultiprocessorsystems
a
swersymmetricmultiprocessi
gtreatsallprocessorsasequalsa
dioca
beprocessedo
a
ycpuasymmetricmultiprocessi
ghaso
emastercpua
dtheremai
dercpusareslavesthemasterdistributestasksamo
gtheslavesa
dioisusuallydo
ebythemastero
lymultiprocessorsca
savemo
eyby
otduplicati
gpowersupplieshousi
gsa
dperipheralstheyca
executeprogramsmorequicklya
dca
havei
creasedreliabilitytheyarealsomorecomplexi
botr