Operating System MCQs

What is the role of the bootstrap program during the start-up process of a computer?

• It checks for hardware issues before loading the OS

• It loads part of the operating system into main memory

• It manages device drivers for connected peripherals

• It directly loads applications into flash memory

Which type of memory do mobile phones and tablets primarily use for their operating systems?

• RAM

• Hard Disk

• Flash Memory

• SSD

What is the main purpose of Direct Memory Access (DMA)?

• To allow the CPU to access main memory directly

• To enable faster communication between the CPU and peripherals

• To transfer data between memory and I/O devices independently of the CPU

• To increase the RAM size for data storage

What happens when the data transfer using DMA is complete?

• The CPU continues its task without any interruption

• The I/O device sends a signal to shut down the system

• An interrupt signal is sent to the CPU from the DMA

• The DMA automatically restarts the process

Which of the following is NOT a task performed by the kernel?

• Process management

• Device management

• Managing user interface design

• Interrupt handling

In which scheduling type can processes be interrupted while they are running?

• Non-preemptive

• Preemptive

• Sequential

• Batch processing

Which factor is NOT typically considered when determining process priority?

• The amount of CPU time required

• The user's level of access

• The type of process (batch, online, real-time)

• The resource requirements of the process

Which of the following statements is true regarding multitasking in operating systems?

• It ensures that only one process runs at a time

• It uses scheduling to allocate resources efficiently

• It stops all background processes to speed up the current process

• It only works on non-preemptive systems

What is the function of the Process Control Block (PCB) in an operating system?

• It stores data related to a program’s user interface

• It contains the instructions to execute a process

• It holds information required to manage and control a process

• It is used to allocate memory to a process

Which state represents a process that is ready to use the CPU but waiting for its turn?

• Running

• Ready

• Blocked

• Interrupted