حلول الفصل الثاني

Practice Exercises
2.1 What isthepurposeofsystemcalls?
Answer: System callsallowuser-levelprocessestorequestservicesof
the operatingsystem.
2.2 What arethefivemajoractivitiesofanoperatingsystemwithregardto
processmanagement?
Answer: The fivemajoractivitiesare:
a. Thecreationanddeletionofbothuserandsystemprocesses
b. Thesuspensionandresumptionofprocesses
c. Theprovisionofmechanismsforprocesssynchronization
d. Theprovisionofmechanismsforprocesscommunication
e. Theprovisionofmechanismsfordeadlockhandling
2.3 What arethethreemajoractivitiesofanoperatingsystemwithregard
to memorymanagement?
Answer: The threemajoractivitiesare:
a. Keeptrackofwhichpartsofmemoryarecurrentlybeingusedand
Practice Exercises
2.1 What isthepurposeofsystemcalls?
Answer: System callsallowuser-levelprocessestorequestservicesof
the operatingsystem.
2.2 What arethefivemajoractivitiesofanoperatingsystemwithregardto
processmanagement?
Answer: The fivemajoractivitiesare:
a. Thecreationanddeletionofbothuserandsystemprocesses
b. Thesuspensionandresumptionofprocesses
c. Theprovisionofmechanismsforprocesssynchronization
d. Theprovisionofmechanismsforprocesscommunication
e. Theprovisionofmechanismsfordeadlockhandling
2.3 What arethethreemajoractivitiesofanoperatingsystemwithregard
to memorymanagement?
Answer: The threemajoractivitiesare:
a. Keeptrackofwhichpartsofmemoryarecurrentlybeingusedand