Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Chapter: 55
Q781:
When using a simple flag system to control access to a printer, what does a set flag indicate?
A. The printer is available
B. The printer is currently allocated
C. The printer is out of order
D. The printer is under maintenance
Correct Answer:
B
Chapter: 55
Q782:
What problem can occur with a simple flag system in a time-sharing system?
A. The flag value is always correct
B. The flag may not be updated in time
C. The flag is never checked
D. The flag value is ignored
Correct Answer:
B
Chapter: 55
Q783:
Which instruction can be used to prevent interruptions during flag testing and setting?
A. Disable interrupt instruction
B. Enable interrupt instruction
C. Read instruction
D. Write instruction
Correct Answer:
A
Chapter: 55
Q784:
What is the purpose of the test-and-set instruction in semaphore operations?
A. It retrieves and sets the flag value atomically
B. It retrieves the flag value only
C. It sets the flag value only
D. It clears the flag value only
Correct Answer:
A
Chapter: 55
Q785:
In the semaphore system, what is the critical region?
A. A section of code executed by multiple processes
B. A section of code executed by a single process at a time
C. A memory location that holds the semaphore value
D. A hardware device controlled by the semaphore
Correct Answer:
B
Chapter: 55
Q786:
What does mutual exclusion ensure in semaphore-based synchronization?
A. Only one process can execute a critical region at a time
B. Multiple processes can access the critical region simultaneously
C. The semaphore is always set
D. The semaphore is always clear
Correct Answer:
A
Chapter: 55
Q787:
What might happen if two processes access the printer simultaneously using a simple flag system?
A. The printer produces correct results for both processes
B. One process will always be denied access
C. Both processes will get correct results
D. Both processes will interfere with each other
Correct Answer:
D
Chapter: 55
Q788:
How is a semaphore implemented to avoid interruption issues?
A. By using an interrupt enable instruction
B. By using a test-and-set instruction
C. By using a standard read instruction
D. By using a standard write instruction
Correct Answer:
B
Chapter: 55
Q789:
What is the analogy used to describe a semaphore in the provided content?
A. Railroad signals controlling train access
B. A traffic light controlling vehicle flow
C. A gate controlling access to a building
D. A security badge controlling entry to a room
Correct Answer:
A
Chapter: 56
Q790:
What is a deadlock in the context of operating systems?
A. A condition where processes are blocked from progressing due to resource allocation
B. A situation where processes run without any issue
C. A condition where processes are executed in parallel
D. A situation where all processes terminate unexpectedly
Correct Answer:
A
Chapter: 56
Q791:
Which of the following is NOT one of the three conditions required for deadlock to occur?
A. Competition for non-sharable resources
B. Partial resource requests
C. Forcibly retrieving allocated resources
D. Non-forcible retrieval of resources
Correct Answer:
C
Chapter: 56
Q792:
In a deadlock situation, if two processes are waiting for resources held by each other, which condition is being satisfied?
A. Competition for non-sharable resources
B. Partial resource requests
C. Non-forcible retrieval of resources
D. Mutual exclusion
Correct Answer:
A
Chapter: 56
Q793:
What is the purpose of deadlock detection and correction schemes?
A. To detect and correct deadlock by forcibly retrieving some resources
B. To prevent deadlock from occurring
C. To avoid using non-sharable resources
D. To avoid resource allocation issues
Correct Answer:
B
Chapter: 56
Q794:
How can a full process table cause a deadlock?
A. By preventing any new processes from being created due to lack of space
B. By creating too many processes in the system
C. By reducing system performance significantly
D. By overloading the process scheduler
Correct Answer:
A
Chapter: 56
Q795:
What technique involves making a non-sharable resource appear sharable by holding data for output until later?
A. Spooling
B. Deadlock detection
C. Deadlock avoidance
D. Process scheduling
Correct Answer:
A
Chapter: 56
Q796:
Which condition for deadlock is addressed by requiring each process to request all resources at one time?
A. Partial resource requests
B. Non-forcible retrieval of resources
C. Competition for non-sharable resources
D. Mutual exclusion
Correct Answer:
A
Chapter: 56
Q797:
How does spooling help in managing non-sharable resources?
A. By holding data for output until the resource becomes available
B. By sharing resources among multiple processes
C. By forcibly retrieving resources from processes
D. By allocating resources to processes in a sequential manner
Correct Answer:
A
Chapter: 56
Q798:
What is the technical term used for removing processes to break a deadlock in a full process table scenario?
A. Killing
B. Spooling
C. Detecting
D. Correcting
Correct Answer:
A
Chapter: 56
Q799:
Which of the following techniques converts non-sharable resources into sharable ones?
A. Deadlock avoidance
B. Deadlock detection
C. Spooling
D. Resource allocation management
Correct Answer:
A
Chapter: 56
Q800:
What condition for deadlock involves a process requesting additional resources after initially receiving some?
A. Partial resource requests
B. Competition for non-sharable resources
C. Non-forcible retrieval of resources
D. Mutual exclusion
Correct Answer:
A