Unit 8 CS369 Operating Systems Administration FINAL EXAM Most Recent Version Comprehensive 150 Questions and Verified Answers Accurate Solutions Already Graded A+ Get it 100% Correct

Unit 8 CS369 Operating Systems Administration
FINAL EXAM 2025-2026 Most Recent Version
Comprehensive 150 Questions and Verified
Answers Accurate Solutions Already Graded A+
Get it 100% Correct

a collection of statements - CORRECT ANSWER: program


A CPU repeatedly checks the status of a device - CORRECT ANSWER: polling



A device controller notifies the corresponding driver when the device is available -
CORRECT ANSWER: interrupt-driver I/O



A disk is an example of ... - CORRECT ANSWER: block device



A factory is producing pepper and salt shakers. Use lock(s) and condition variable(s) to
write a procedure PepperShakerArrvies() that is called whenever a pepper shaker
(thread) is produced. Use lock(s) and condition variable(s) to write another procedure
SaltShakerArrives() that is called whenever a salt shaker (thread) is produced. As soon
as one pepper shaker and one salt shaker are available, one of the threads should call
PackShakers() (you don't need to implement PackShakers()); one thread is returned
from PepperShakerArrives() and one thread is returned from SaltShakerArrives(). -
CORRECT ANSWER: int pepperCounter = 0;

int saltCounter = 0;

Lock lock = new reentrantLock();

Condition SaltandPepper = lock.newCondition();
PepperShakerArrives(){

lock.Acquire();
pepperCounter++;

,return(lock);

}



SaltShaker Arrives(){
lock.acquire();

saltCounter++;

return(lock);

}



if(saltCounter >= 1 && pepperCounter >= 1){

PackShakers()

}


A factory is producing socks. Use lock(s) and condition variables(s) to write a procedure
ASockIsProduced(), which is called whenever a sock (thread) is produced. As soon as
two socks are available, one thread should call PackAPair() (you don't need to
implement PackAPair()), and two threads should return from ASockIsProduced(). -
CORRECT ANSWER: int socksProduced = 0;

Lock lock = new ReentrantLock();

Condition socksAvailable = lock.newCondition();


ASockIsProduced(){

lock.Acquire();

socksProduced++;

if(socksProduced == 2){

socksAvailable.broadcast(&lock);

lock.PackPair();
lock.Release();

, }

return lock;




}



A general OS function - CORRECT ANSWER: standard services



A keyboard is an example of ... - CORRECT ANSWER: character device



A mechanism to protect one app from crashing another app - CORRECT ANSWER:
address space


A piece of code that only one thread can execute at a time - CORRECT ANSWER:
Critical Section


A recipe is an analogy of? - CORRECT ANSWER: A program


A referenced page is not in memory - CORRECT ANSWER: page fault



a sequential execution system - CORRECT ANSWER: thread



A unit of processing - CORRECT ANSWER: job


A unit of transfer - CORRECT ANSWER: packet


Ad hoc file system check - CORRECT ANSWER: fsck