30 Questions
What is one of the operations that can be performed on processes?
Process duplication
How is a new child process created using the 'Fork' mechanism?
By copying all values of parent's PCB to child's PCB
What is the function of 'Exec' in process creation?
Replaces the child's image with a new program
What happens when a new process is created in an operating system?
A unique Process Identifier (PID) is assigned to it
Which event triggers the creation of new processes?
User request for process creation
What happens to the program counter after a new child process is created using 'Fork'?
Both child and parent start executing at instruction after fork call
What does the use() function do?
It processes data from the buffer
In the provided Java code, what is the purpose of the Thread example class?
To create threads
What does the PC class within the Java code represent?
A class for buffer management
What is the role of the produce() method within the Java code snippet?
Adding items to a list
What is the main reason for using threads in the context of the provided Java code?
To improve program efficiency by parallel processing
Why is it necessary to synchronize access to shared resources in a multi-threaded environment like the one in the Java code?
To prevent race conditions and data corruption
What is the significance of the return value of fork() in differentiating the child process from the parent process?
The child process sees a 0, while the parent process sees the PID of the child process.
In the exec family of commands, which specific command must be used for the project mentioned in the text?
execvp()
What does it mean when execvp() does not return successfully?
There was an error, such as the command not existing.
What is the primary function of the Long Term or job scheduler in an operating system?
Bringing new processes to the ready state and controlling the degree of multiprogramming
How should the list of arguments passed to a program be terminated when using execvp()?
With a NULL pointer.
Which type of process spends a significant amount of time on input and output operations?
IO bound processes
Which system calls allow the parent process to wait for its child process to finish?
wait()/waitpid()
What should be carefully checked when constructing the array of arguments for execvp()?
Ensuring that it matches what the program expects based on its function prototype.
What does the Short Term or CPU scheduler do in the process scheduling of an operating system?
Selects a process from the ready state for scheduling on the running state
What is the main objective of the Long Term or job scheduler when selecting processes for execution?
Maintaining a balance between IO and CPU bound processes
Which type of process scheduler is responsible for controlling the degree of multiprogramming in an operating system?
Long Term or job scheduler
How does the operating system maintain Process Control Blocks (PCBs) for different processes?
By dividing PCBs into separate queues based on process states
What is the main drawback of the First-Come, First-Served (FCFS) scheduling algorithm?
It can yield very long average wait times.
Why is minimizing the variance of criteria sometimes more desirable than minimizing the actual value?
Users are more accepting of consistent systems.
In a scheduling system, what does FCFS stand for?
First-Come, First-Served
What can be a consequence of using FCFS with processes having varying burst times?
Long average wait times
Why does FCFS scheduling sometimes result in long average wait times?
Because the first process to arrive may take a long time.
What factor influences the average wait time in the FCFS scheduling algorithm?
The order of process arrival
This quiz covers various operations that can be performed on processes in an operating system, including process creation, preemption, blocking, and termination. Topics such as forking are also discussed.
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