Operating System Quiz (Set 20) - Upskilling Engineers

Operating System (Set 10)

1 / 10

What is the role of a device driver in operating systems?

To manage communication between hardware devices and the CPU

To allocate memory to different processes

To provide an abstract representation of an opened file

To switch the CPU from one process to another and save the state of the current process

2 / 10

What is the purpose of a system call in operating systems?

To allocate memory to different processes

To provide an abstract representation of an opened file

To provide a way for user programs to request services from the operating system

To switch the CPU from one process to another and save the state of the current process

3 / 10

What is the role of a dirty bit in page replacement algorithms?

To indicate whether a page has been modified since it was last loaded into memory

To determine the priority of a process

To track the number of times a page has been accessed

To manage communication between hardware devices and the CPU

4 / 10

What is the purpose of a resident set size (RSS) in memory management?

To manage communication between hardware devices and the CPU

To determine the priority of a process

To represent the amount of time a process spends executing before it's preempted and moved to the ready queue

To represent the portion of a process's memory that is currently in main memory

5 / 10

What is the role of a logical OR operator in process synchronization?

To synchronize the execution of multiple processes by ensuring that all of them reach a certain point before proceeding

To determine the priority of a process

To manage communication between hardware devices and the CPU

To coordinate processes by allowing any one of them to proceed if a specific condition is met

6 / 10

What is the purpose of a preemptive scheduling algorithm?

To manage communication between hardware devices and the CPU

To allocate a fixed time slice to each process in a cyclic order, ensuring fairness

To synchronize and control access to shared resources among multiple processes

To provide an abstract representation of an opened file

7 / 10

What is the role of a page table in memory management?

To store all the necessary information about a process, including its state, priority, and register values

To represent a location in the address space of a process

To translate virtual addresses to physical addresses

To determine the priority of a process

8 / 10

What is the purpose of a demand-paging mechanism in virtual memory?

To provide an abstract representation of an opened file

To determine the priority of a process

To dynamically load pages into main memory only when they are needed

To manage communication between hardware devices and the CPU

9 / 10

What is the role of a file allocation table (FAT) in file systems?

To store metadata and information about a file

To manage communication between hardware devices and the CPU

To manage the storage and retrieval of files

To keep track of the allocation status of each block in a storage device

10 / 10

What is the purpose of a semaphore in process synchronization?

To manage communication between hardware devices and the CPU

To allocate memory to different processes

To ensure that only one process at a time can access a shared resource

To represent a location in the address space of a process

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