Mumbai University > Information Technology > Sem5 > Operating System

Marks: 5M

Year: Dec14

• Microkernel architecture:

  • Assigns only a few essential functions to the kernel, including address spaces, interprocess communication, and basic scheduling.

• Multithreading:

  • The process is divided into threads that can run simultaneously.

• Thread:

  • Thread is a dispatchable unit of work.

  • It includes a processor context program counter and stack pointer and its own data storage for the stack. It executes sequentially and is interruptable.

• Process:

  • Collection of one or more threads and associated system resources are known as processes.

• Symmetric multiprocessing:

  • Standalone computer with multiple processors that share the same memory and I/O facilities connected by a communication bus.

  • All processors can perform the same functions.

• Distributed operating systems:

  • Provide the illusion of a single main memory and single secondary memory space.

  • It is also used for distributed file system.

• Object-oriented design:

  • It is used for adding modular extensions to a small kernel.

  • It also enables programmers to customize an operating system without disrupting system integrity.