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Guidelines on Cyber Security onboard ships
Guidelines on Cyber Security onboard ships

... Unlike other areas of safety and security where historic evidence is available and reporting of incidents is required, cyber security is made more challenging by the absence of any definitive information about the incidents and their impact. There are motives for organisations and individuals to exp ...
A Virtual Machine Environment For Real Time
A Virtual Machine Environment For Real Time

... architechture which helps in allocation of resources to the VM in a controlled manner. This feature helps in running multiple operating systems like Windows, Linux, and NetWare and so on simultaneously on a single physical machine. Isolation provided to the VMs by the Virtualization software such as ...
RHEL High Level Design Version 1.3
RHEL High Level Design Version 1.3

... your own risk. This document may be reproduced or distributed in any form without prior permission provided the copyright notice is retained on all copies. Modified versions of this document may be freely distributed provided that they are clearly identified as such, and this copyright is included i ...
No Slide Title
No Slide Title

... decisions, I/O processing, and other system activities; while the other processors just execute user code. ...
lecture1
lecture1

... The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, movies, sounds, documents, and programs, ...
Operating Systems
Operating Systems

... • Determines which process is selected for execution • If based on execution characteristics then important quantities are: • w = time spent in system so far, waiting • e = time spent in execution so far • s = total service time required by the process, including e; ...
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ch1

...  The operating system provides the means for proper use of these ...
Lab Manual to Accompany A+ Guide to Managing and Maintaining Your PC
Lab Manual to Accompany A+ Guide to Managing and Maintaining Your PC

... troubleshooting PCs. Every attempt has been made to write labs that allow you to use generic hardware devices. A specific hardware configuration isn’t necessary to complete the labs. In learning to install, support, and troubleshoot operating systems, you learn to support Windows Vista and Windows X ...
Today`s Operating Systems and their Future with
Today`s Operating Systems and their Future with

... This paper is meant as an introduction to operating systems, their main functions and what types exist, as well as possible benefits gained by placing typical software functionality in hardware. By introducing hardware support in the form of reconfigurable architecture, such as programmable logic de ...
Introduction
Introduction

... Protection and Security  Systems generally first distinguish among users, to ...
Effective Log Management - National Cyber Security Centre
Effective Log Management - National Cyber Security Centre

... server. Depending on the objectives of the attacker, SQLi attacks can be used to display the contents of protected database tables, add new user accounts to enable direct remote access, provide the ability to upload and execute attack tools and can even provide full remote desktop access to the serv ...
Chapter 09: Uniprocessor Scheduling
Chapter 09: Uniprocessor Scheduling

... • Determines which process is selected for execution • If based on execution characteristics then important quantities are: • w = time spent in system so far, waiting • e = time spent in execution so far • s = total service time required by the process, including e; ...
Input and Output
Input and Output

... – Interrupt context – kernel operating not on behalf of any process – Process context – kernel operating on behalf of a particular process – User context – process executing in user virtual memory ...
Umfang von PCI-Audits reduzieren mit Cisco TrustSec - Analyse und Bewertung von Verizon
Umfang von PCI-Audits reduzieren mit Cisco TrustSec - Analyse und Bewertung von Verizon

... facilitate; for example, they may want only traders to access trading systems, or only doctors to access patient records. However, when these policies are implemented, they traditionally need to be translated into network security rules that define users and servers by their IP addresses, subnet, or ...
Abstract View of System Components
Abstract View of System Components

...  Given the I/O instructions are privileged, how does the user program perform I/O?  System call – user process request I/O action to OS  Usually takes the form of a trap to a specific location in the interrupt vector.  Control passes through the interrupt vector to a service routine in the OS, a ...
CS 5204 Operating Systems Fall 2005
CS 5204 Operating Systems Fall 2005

... the last two decades can be traced back to it. The solution we propose is simple: complete elimination of OS abstractions by lowering the operating system interface to the hardware level. • More info here. CS 5204 Fall 2013 ...
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5_disk_scheduling

... • Swap-space can be carved out of the normal file system, or, more commonly, it can be in a separate disk partition • Swap-space management – 4.3BSD allocates swap space when process starts; holds text segment (the program) and data segment – Kernel uses swap maps to track swap-space use – Solaris 2 ...
Linux For Beginners - St. Louis UNIX Users Group
Linux For Beginners - St. Louis UNIX Users Group

... "Most of the tools used with Linux are GNU software and are under the GNU copyleft." Linux applications (apps) focus on doing one job well with communications between applications implemented using well-defined public protocols and file formats. This modular design has a number of advantages, includ ...
Running Linux and AUTOSAR side by side
Running Linux and AUTOSAR side by side

... must at the same time fulfill requirements for two types of systems, which cannot easily be provided by a single operating system. A viable but impractical method for building such a hybrid system is to implement all parts to the same standards according to the highest level of criticality on top of ...
Structuring of the Windows Operating System
Structuring of the Windows Operating System

... !   Still an SMP system (e.g. any processor can access all of memory) !   But node-local memory is faster ...
Notes on Operating Systems
Notes on Operating Systems

... where we have used a 3-D perspective to show that there is one hardware base, one operating system, but many applications. It also shows the important interfaces: applications can execute only non-privileged machine instructions, and they may also call upon the operating system to perform some servi ...
Cyber - Security and Investigations Ingrid Beierly August 18, 2008
Cyber - Security and Investigations Ingrid Beierly August 18, 2008

... • Direct Internet access to the POS system should not exist. This can be addressed using a firewall device separating the Internet and the POS system • Enable logging on remote access and firewall • Monitor logs periodically to detect unknown activity • Implement network segmentation to separate pay ...
Course: Operating Systems Instructor: M Umair
Course: Operating Systems Instructor: M Umair

... shortcomings in an operating system. For instance, MS-DOS was written for the Intel 8088 architecture, which has no mode bit and therefore no dual mode. A user program can wipe out the operating system by writing over it with data. Multiple programs are able to write to a device at the same time, ...
What is an Operating System?
What is an Operating System?

... Protection – any mechanism for controlling access of processes or users to resources defined by the OS Security – defense of the system against internal and external attacks Huge range, including denial-of-service, worms, viruses, identity theft, theft of service Systems generally first distinguish ...
Click for PDF - Cyber Security Services
Click for PDF - Cyber Security Services

... using Java for business purposes while minimising their risk.  12. The  newly  introduced  mitigation  strategy  #6  ‘Automated  dynamic  analysis’  extracts  the  behavioural analysis functionality from the existing two mitigation strategies ‘Email content filtering’  and ‘Web content filtering’. A ...
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Unix security

Unix security refers to the means of securing a Unix or Unix-like operating system. A secure environment is achieved not only by the design concepts of these operating systems, but also through vigilant user and administrative practices.
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