Operating System Concepts

What is process management in an operating system?

• Process management in an operating system involves activities such as process creation, scheduling, termination, and communication between processes.

• Process management is only related to hardware maintenance

• Process management is solely responsible for network security

• Process management involves managing physical documents

Explain the difference between multi-programming and multi-tasking.

• Multi-programming allows tasks within a single program to run concurrently, while multi-tasking involves running multiple programs on separate processors.

• Multi-programming and multi-tasking are interchangeable terms with no actual difference.

• In multi-programming, multiple programs run on a single processor by switching between them, whereas in multi-tasking, multiple tasks within a single program run concurrently.

• Multi-programming involves running multiple programs on separate processors, while multi-tasking switches between tasks within a single program.

How does a CPU scheduler decide which process to run next?

• Based on the weather conditions

• Based on scheduling algorithms like FCFS, SJN, Round Robin, etc.

• Randomly selecting from a list

• By flipping a coin

What is virtual memory and how does it work in memory management?

• Virtual memory is a software program that enhances the speed of RAM by compressing data.

• Virtual memory is a physical storage unit within the computer that directly interacts with the CPU.

• Virtual memory is a type of memory chip that stores data independently of the main memory.

• Virtual memory is a memory management technique that uses a combination of hardware and software to allow a computer to compensate for physical memory shortages, by temporarily transferring data from RAM to disk storage.

Describe the role of a file system in an operating system.

• The file system manages files and directories on storage devices.

• The file system determines the color scheme of the user interface.

• The file system is responsible for managing network connections.

• The file system controls the CPU operations in the operating system.

What is a directory in a file system and how is it organized?

• A directory in a file system is organized by containing only files without any subdirectories.

• A directory in a file system is organized by containing files and subdirectories within it, forming a tree-like structure where each directory can have multiple files and subdirectories.

• A directory in a file system is organized by having a circular structure where files can link to multiple directories.

• A directory in a file system is organized by being a standalone entity without any files or subdirectories within it.

Explain the concept of device drivers in device management.

• Device drivers are only needed for software applications, not hardware devices.

• Device drivers are essential for proper device management as they enable the operating system to control and utilize hardware devices effectively.

• Device drivers are responsible for network security, not hardware control.

• Device drivers are primarily used for data storage, not device management.

What is the purpose of an interrupt in device management?

• The purpose of an interrupt in device management is to signal the CPU about a device event that needs attention.

• Interrupts are primarily used for data storage purposes

• Interrupts are designed to increase CPU efficiency

• Interrupts are used to slow down device operations

How does a device controller communicate with the CPU?

• Through USB connection

• Through Wi-Fi signal

• Through interrupts

• Through Bluetooth pairing

Discuss the importance of I/O devices in an operating system.

• I/O devices are only useful for gaming purposes.

• I/O devices have no impact on the performance of an operating system.

• I/O devices are essential for enabling communication between the computer and the external world, allowing users to input data and receive output.

• I/O devices are primarily used for decorative purposes in computers.