Which file attribute indicates the last modification time of a file?
Access Time
Last Modified Time
Modification Time
Creation Time
In which type of operating system structure do minimal services exist in the kernel while other services run as user-level processes?
Microkernel
Layered
Hybrid
Monolithic
Which of the following is an example of a distributed operating system?
Google Cloud OS
Unix
Linux
Windows
Which of the following describes the 'Ready' state of a process?
Currently executing on CPU
Waiting for I/O operation
Ready to execute when CPU is available
Terminated and exiting
What is the main disadvantage of the FIFO page replacement algorithm?
It is complex to implement in hardware
It can lead to high page faults with frequently used pages
It may lead to thrashing due to frequent page changes
It requires making multiple passes through the memory
What is the primary goal of deadlock prevention?
To allow processes to complete without waiting
To detect deadlocks when they occur
To make it impossible for deadlocks to occur
To ensure system resources are freed
Which scheduling algorithm involves a fixed time quantum for processes to execute before being cycled out for the next process?
Round Robin
Shortest Job Next
Priority Scheduling
First-Come, First-Served
In a tree-structured directory, how does the system ensure efficient access and management?
By using flat file structures
By allowing multiple parent directories
By hierarchically organizing directories and files
By storing all files in a single directory
What is a characteristic of Virtual Memory?
Makes the system operate slower than physical memory
Has a limited size equal to physical RAM
Allows execution of processes that may not fit in physical RAM
Requires less physical RAM
What is the primary purpose of the process control block (PCB)?
To handle interrupt requests from hardware
To contain the program code of a process
To manage memory allocation for a process
To store information about process state and resources