OSG202 - SP2025 - FE

The first general-purpose electronic computer, the ENIAC, had 18,000 vacuum tubes and consumed ____ watts of power.

• 1.400.000.0
• 140.000.0
• 14.000.0
• 1.400.0

In the operating system zoo, what is the main priority of time-sharing system over a multiprogramming system?

• The cost of managing smaller processes
• Increase the CPU's performance
• Response time IS smaller
• Reduce the burst time of the process

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

Structure of a disk drive consists of ____

• only one metal platter
• Fuo metal platters
• one or more metal platters
• many metal platters

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.

Since operating systems interact closely with the hardware, some knowledge of computer hardware IS useful for understanding them- Computers are built up of processors, memory, and 1/0 devices... Which of the following is not a part of the operating system?

• Performance monitor
• Input/output control program
• Job control program
• Supervisor

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.

What is the primary purpose of the Kernel in an operating system structure?

• To provide a user-friendly interface.
• To manage hardware resources and provide services to software.
• To store user data and files.
• To control the display and graphics of the user interface.

A computer has 4GB RAM of which the operating system occupies 2GB.The processes are all 1024 MB and have the same characteristics. How many percent is CPU utilization when these programs are idle waiting for I/0 50% of the time?

• 75%
• 90%
• 1%
• 50%

Which of the following process state transitions(from-to) is illegal?

• Ready, Blocked (waiting)
• Running, Blocked (waiting)
• Blocked, Ready
• Running. Ready