Operating Systems
... Dual-Boot permits two or more operating systems to be installed on one computer ...
... Dual-Boot permits two or more operating systems to be installed on one computer ...
Operating System Functions
... •You computer only has a limited amount of Memory (for example 4gb) •The operating system has something built in known as a memory manager. •When you open, and are working on an application it is stored in the RAM (memory) ...
... •You computer only has a limited amount of Memory (for example 4gb) •The operating system has something built in known as a memory manager. •When you open, and are working on an application it is stored in the RAM (memory) ...
CS 471-001: Operating Systems Spring 2017 Department of
... Upon completion of this course, the students should be able to: Demonstrate knowledge about the role and purpose of the operating systems Be able to explain the features of operating systems found in different types of computer systems (e.g., mainframe systems, personal computers, multiprocessor sys ...
... Upon completion of this course, the students should be able to: Demonstrate knowledge about the role and purpose of the operating systems Be able to explain the features of operating systems found in different types of computer systems (e.g., mainframe systems, personal computers, multiprocessor sys ...
Operating system - Department of Computer Science
... allows users to directly enter commands that are to be performed by the operating system Is usually a system program (not part of the kernel) ...
... allows users to directly enter commands that are to be performed by the operating system Is usually a system program (not part of the kernel) ...
BBA IInd SEMESTER EXAMINATION 2008-09
... First-come, First-served (run in order 10,6, 2, 4, 8) iv) Shortest job first For (i) assume that the system is multi-programmed, and to each job gets share of the CPU. For (ii) through (iv) assume that only one job at a time runs, until finishes. All jobs are completely CPU bound. ...
... First-come, First-served (run in order 10,6, 2, 4, 8) iv) Shortest job first For (i) assume that the system is multi-programmed, and to each job gets share of the CPU. For (ii) through (iv) assume that only one job at a time runs, until finishes. All jobs are completely CPU bound. ...
Operating System Structures
... – More robust (less code works in kernel mode) – More secure • Exampled: Tru64 UNIX, MacOS X, QNX, also somewhat Windows NT ...
... – More robust (less code works in kernel mode) – More secure • Exampled: Tru64 UNIX, MacOS X, QNX, also somewhat Windows NT ...
Authentication is the process of determining whether someone or
... operating An operating system in which only one 196 program can be in memory at a time. When personal computers were introduced, there was a need for an operating system for this new type of computer. During this era, single-user operating system such as DOS was introduced. ...
... operating An operating system in which only one 196 program can be in memory at a time. When personal computers were introduced, there was a need for an operating system for this new type of computer. During this era, single-user operating system such as DOS was introduced. ...
Operating Systems - Mid Yell Junior High School
... Interactive processing: user enters a command it is processed and a response is then given eg ATM machines, Checkouts, Ticket Sales. Real-time processing: processing is done immediately, as it is required eg Robot ...
... Interactive processing: user enters a command it is processed and a response is then given eg ATM machines, Checkouts, Ticket Sales. Real-time processing: processing is done immediately, as it is required eg Robot ...
Introduction
... Operating System Concepts • Processes – Each process is uniquely identified with a process id – The O/S will in most cases store information in a process table – The process id is used to locate this information. – A process can cause other processes to be created – Unix for example implements proc ...
... Operating System Concepts • Processes – Each process is uniquely identified with a process id – The O/S will in most cases store information in a process table – The process id is used to locate this information. – A process can cause other processes to be created – Unix for example implements proc ...
08 Operating System Support
... A batch of jobs is queued up and executed as rapidly as possible with no idle time ...
... A batch of jobs is queued up and executed as rapidly as possible with no idle time ...
Operating Systems
... Ability to understand the synchronous and asynchronous communication mechanisms in their respective OS. ...
... Ability to understand the synchronous and asynchronous communication mechanisms in their respective OS. ...
Chapter 2: Operating-System Structures
... – More reliable (less code is running in kernel mode) – More secure • Detriments: – Performance overhead of user space to kernel space communication ...
... – More reliable (less code is running in kernel mode) – More secure • Detriments: – Performance overhead of user space to kernel space communication ...
Answers to Even-numbered Exercises
... 4. What is the Free Software Foundation/GNU? What is Linux? Which parts of the Linux operating system did each provide? Who else has helped build and refine this operating system? The Free Software Foundation (www.fsf.org) is the principal organizational sponsor of the GNU Project. GNU developed man ...
... 4. What is the Free Software Foundation/GNU? What is Linux? Which parts of the Linux operating system did each provide? Who else has helped build and refine this operating system? The Free Software Foundation (www.fsf.org) is the principal organizational sponsor of the GNU Project. GNU developed man ...
Q#1: A _____ is an example of a systems program. Q#2: A
... Ans: ______b_________ (1pt) Q#4: Microkernels use _____ for communication. a) message passing b) shared memory c) system calls d) virtualization Ans: ______A_________ (1pt) Q#5: Which of the following is true: a) Many operating system merge I/O devices and files into a combined file because of the s ...
... Ans: ______b_________ (1pt) Q#4: Microkernels use _____ for communication. a) message passing b) shared memory c) system calls d) virtualization Ans: ______A_________ (1pt) Q#5: Which of the following is true: a) Many operating system merge I/O devices and files into a combined file because of the s ...
virtual machine
... Moves as much from the kernel into “user” space. Communication takes place between user modules using message passing. Benefits: - easier to extend a microkernel, - easier to port the operating system to new architectures, - more reliable (less code is running in kernel mode), - more secure. ...
... Moves as much from the kernel into “user” space. Communication takes place between user modules using message passing. Benefits: - easier to extend a microkernel, - easier to port the operating system to new architectures, - more reliable (less code is running in kernel mode), - more secure. ...
Unit OS2: Operating Systems Principles
... Explain why Windows NT 4 move windows manager and graphics services from running in the context of the Windows Subsystem process to a set of callable services running in kernel mode. The primary reason for this shift was to improve overall system performance. Having a separate server process that co ...
... Explain why Windows NT 4 move windows manager and graphics services from running in the context of the Windows Subsystem process to a set of callable services running in kernel mode. The primary reason for this shift was to improve overall system performance. Having a separate server process that co ...
Operating Systems Principles Lecture 1: Introduction
... Transistors and Batch Systems Memory Layout of a Batch System ...
... Transistors and Batch Systems Memory Layout of a Batch System ...
Introduction - USC Upstate: Faculty
... how interaction with that device should be done. – The application programmer interface (API), which the device drivers present to application programs, allows those programs to interact with those devices at a fairly high level, while the operating system does the “heavy lifting” of performing the ...
... how interaction with that device should be done. – The application programmer interface (API), which the device drivers present to application programs, allows those programs to interact with those devices at a fairly high level, while the operating system does the “heavy lifting” of performing the ...
Operating System and Computer Security
... Windows 1.0 very delayed, very poor quality Windows 3.1 (c. 1992) first usable version, still very limited in comparison to MacOS 6 Windows 95 revolutionary for Intel based computers, but, just a copy of Mac OS Revolution is non-progressive change, major drastic change ...
... Windows 1.0 very delayed, very poor quality Windows 3.1 (c. 1992) first usable version, still very limited in comparison to MacOS 6 Windows 95 revolutionary for Intel based computers, but, just a copy of Mac OS Revolution is non-progressive change, major drastic change ...
Summary for chapter 2 OPERATING SYSTEM nAJWA kNEFATI
... Once an operating system is designed, it must be implemented. It is difficult to make general statements about how they are implemented. ...
... Once an operating system is designed, it must be implemented. It is difficult to make general statements about how they are implemented. ...
LECTURE 33 APPLICATION I/O INTERFACE
... Nonblocking - I/O call returns as much as available User interface, data copy (buffered I/O) Implemented via multi-threading Returns quickly with count of bytes read or written - ex: read a “small” portion of a file very quickly, use it, and go back for more, ex: displaying video “continuous ...
... Nonblocking - I/O call returns as much as available User interface, data copy (buffered I/O) Implemented via multi-threading Returns quickly with count of bytes read or written - ex: read a “small” portion of a file very quickly, use it, and go back for more, ex: displaying video “continuous ...
Here is the Original File
... AIX was designed for the IBM 6150 RT and was initially used on the IBM RS/6000, POWER and PowerPC-based systems, IBM System I, System/370 mainframes, PS/2 personal computers, and the Apple Network Server. AIX is one of five operating system that have versions certified to The Open Group's UNIX 03 st ...
... AIX was designed for the IBM 6150 RT and was initially used on the IBM RS/6000, POWER and PowerPC-based systems, IBM System I, System/370 mainframes, PS/2 personal computers, and the Apple Network Server. AIX is one of five operating system that have versions certified to The Open Group's UNIX 03 st ...
The Operating System
... Coordinates all software activity within a computer system: The master control program that runs the computer. The first program loaded when the computer is turned on, its main part, the "kernel," resides in memory at all times. The operating system sets the standards for all application programs th ...
... Coordinates all software activity within a computer system: The master control program that runs the computer. The first program loaded when the computer is turned on, its main part, the "kernel," resides in memory at all times. The operating system sets the standards for all application programs th ...
