QUESTION 64

1. Which of the following can occur?

   		a) A running process may suspend itself.
   		b) A running process may be suspended by a blocked process.
   		c) A running process may be suspended by a ready process.
   		d) none of the above

0.5 points

QUESTION 65

1. Advantages to distributed systems include:

   		a) They provide the illusion that multiple computers are asingle powerful computer.
   		b) A process can access any of the system’s resources regardlessof where it executes.
   		c) They are easy to implement.
   		d) Both a) and b)

0.5 points

QUESTION 66

1. The system is said to be in an unsafe state if ________.

   		a) the operating system cannot guarantee that all currentprocesses can complete their work within a finite time
   		b) the system is deadlocked
   		c) a thread is indefinitely postponed
   		d) mutual exclusion has been violated

0.5 points

QUESTION 67

1. Which of the following statements about thread operations istrue?

   		a) When a thread joins another thread, the former does notexecute until the latter terminates.
   		b) Thread cancellation always terminates the target threadimmediately.
   		c) A thread can mask an abort signal.
   		d) A process can continue execution after its primary threadexits.

0.5 points

QUESTION 68

1. The __________ structure indexes page table entries by framenumber rather than by virtual page number.

   		A) hash table
   		B) segment table
   		C) page table
   		D) inverted page table

0.5 points

QUESTION 69

1. __________ is transparent to the programmer and eliminatesexternal fragmentation providing efficient use of main memory.

   		A) Hashing
   		B) Paging
   		C) Segmentation
   		D) Thrashing

0.5 points

QUESTION 70

1. __________ is a technique that smoothes out peaks in I/Odemand.

   		A) Buffering
   		B) Blocking
   		C) Smoothing
   		D) Tracking

0.5 points

QUESTION 71

1. One possible way to prevent a deadlock fromhappening is to make sure a process have all of its requiredresources at one time before starting its execution. Discuss whythis approach is not attractive from practical standpoint. 3%