OSG202_SU24_RE_856410

What is NOT an operating system mode?

• System mode
• User mode
• Kernel mode
• Supervisor mode

Which early operating system was designed for the UNIVAC I computer and is often considered one of the first operating systems?

• MS-DOS
• UNIX
• COBOL
• EDVAC

The was invented to attach all the slow I/O devices, such as the keyboard and mouse, to the computer.

• ISA
• PCI
• DMI
• USB

In Linux, the command ps -aux gives the equivalent of the following in MS-Window

• Start/shutdown.
• Start/Run input CMD.
• Open program Task Manager.
• Open Add/Remove program.

In the Linux OS, which key combination stops the ping command in the terminal?

• Ctrl+Break.
• Ctrl+D.
• Ctrl+C.
• Ctrl+Z.

Many popular operating systems, including Windows and Linux, run on multiprocessors. What are the main advantages of multiprocessor systems?

• Increase throughput
• Decrease throughput
• Low-speed communication
• Reduced reliability

A key concept in all operating systems is the

• Files
• Process.
• Input/Output
• The Shell

The most common ways operating systems can be structured are as a monolithic system, a hierarchy of layers, a microkernel, a client-server, a virtual machine, or an exokernel. What is not the main feature of a monolithic system?

• Information hiding: Every procedure is hiding from every other procedure.
• The operating system runs as a single program in kernel mode.
• The operating system is organized as a hierarchy.
• The operating system is written as a collection of procedures, linked together into a single, large executable program.

In the FIFO page replacement algorithm, what data structure is commonly used to implement the page replacement queue?

• Stack
• Queue
• Linked list
• Array

In the Round-robin scheduling, what happens to a process when it runs out of the of time allocated by the system?

• The process switches from running to a ready state.
• The process switches from running to a blocked state.
• The process switches from running to a suspended-ready state.
• The process switches from running to a suspended state.