Operating Systems Quiz

Operating systems act as intermediaries between users and hardware, managing hardware resources and providing services to applications.

• True

• False

Dual mode operation allows the operating system to differentiate between user-mode and kernel-mode operations, preventing user applications from executing critical system commands.

• True

• False

I/O-bound jobs spend most of their time using the CPU, while CPU-bound jobs spend most of their time performing I/O operations.

• True

• False

Multiprogramming allows multiple processes to be in memory at the same time, optimizing CPU utilization.

• True

• False

Time-sharing systems give the illusion that each user has their own dedicated machine by switching rapidly between jobs.

• True

• False

Time-sharing is usually implemented by allocating fixed time slices to each job.

• True

• False

An interrupt vector stores the addresses of interrupt service routines and helps the system handle interrupts efficiently.

• True

• False

Instructions like I/O operations or memory management commands can be executed in user mode.

• True

• False

The operating system must protect resources like memory, CPU time, and input/output devices from unauthorized access by user programs.

• True

• False

The layered approach in operating systems simplifies debugging and system design by organizing functions into separate layers, though it can decrease performance.

• True

• False