Kernel I/O Subsystem
... Maskable to ignore or delay some interrupts Interrupt vector to dispatch interrupt to correct handler ...
... Maskable to ignore or delay some interrupts Interrupt vector to dispatch interrupt to correct handler ...
1 Interprocess Communication Cooperating Processes The
... defined parts called "threads". Threads allow virtually parallel execution of different sections of a program. A thread is the smallest unit of executable code. A process can consist of several threads. ...
... defined parts called "threads". Threads allow virtually parallel execution of different sections of a program. A thread is the smallest unit of executable code. A process can consist of several threads. ...
best practices - Palo Alto Networks
... from port to port until they find an open one, to ensure users always have access. There is no guarantee that a given set of ports will always define an application, which is why security policies should be applied to traffic associated with applications, instead of just ports. Palo Alto Networks ha ...
... from port to port until they find an open one, to ensure users always have access. There is no guarantee that a given set of ports will always define an application, which is why security policies should be applied to traffic associated with applications, instead of just ports. Palo Alto Networks ha ...
Security - The University of Texas at Dallas
... • You hear them murmur, "Let's see you use that VISA card now, Professor "I-Don't-Give-A's-To Any MBA Candidate!" ...
... • You hear them murmur, "Let's see you use that VISA card now, Professor "I-Don't-Give-A's-To Any MBA Candidate!" ...
The 27 Year Old Microkernel - foundry27
... > Occasionally used when processor privilege is required Ex: manipulate privileged CPU registers > Arguments are a function pointer and a data pointer Remember process manager shares address space with kernel > _NTO_PF_RING0 flag needed to use this kernel call > Only process manager has this fla ...
... > Occasionally used when processor privilege is required Ex: manipulate privileged CPU registers > Arguments are a function pointer and a data pointer Remember process manager shares address space with kernel > _NTO_PF_RING0 flag needed to use this kernel call > Only process manager has this fla ...
Notes
... Ref: http://userhome.brooklyn.cuny.edu/irudowdky/OperatingSystems.htm & Silberschatz, Gagne, & Galvin, Operating Systems Concepts, 7th ed, Wiley (ch 1-3) ...
... Ref: http://userhome.brooklyn.cuny.edu/irudowdky/OperatingSystems.htm & Silberschatz, Gagne, & Galvin, Operating Systems Concepts, 7th ed, Wiley (ch 1-3) ...
Threads, SMP, and Microkernels
... virtual address space to hold the process image and access to I/O • Scheduling/execution- follows an execution path that may be interleaved with other processes • These two characteristics are treated independently by the operating system ...
... virtual address space to hold the process image and access to I/O • Scheduling/execution- follows an execution path that may be interleaved with other processes • These two characteristics are treated independently by the operating system ...
Course Name : INFORMATION SECURITY
... 6. (a) Draw the diagrams showing the relative location of security facilities in TCP/IP protocol stack? Discuss the advantages of each? (b) What is SSL session? Can a session be shared among multiple connections? What are the parameters that define a session state? [8+8] ...
... 6. (a) Draw the diagrams showing the relative location of security facilities in TCP/IP protocol stack? Discuss the advantages of each? (b) What is SSL session? Can a session be shared among multiple connections? What are the parameters that define a session state? [8+8] ...
Module 3: Operating
... virtual line printers A normal user time-sharing terminal serves as the virtual machine ...
... virtual line printers A normal user time-sharing terminal serves as the virtual machine ...
Xen for UCS
... no other Xen kernel versions already installed on the system, version 2.6.26 of the Xencompliant kernel is installed automatically when the package is installed. If required, the respective missing kernel version can be installed subsequently using the univentionkernel-image-2.6.18-xen or univention ...
... no other Xen kernel versions already installed on the system, version 2.6.26 of the Xencompliant kernel is installed automatically when the package is installed. If required, the respective missing kernel version can be installed subsequently using the univentionkernel-image-2.6.18-xen or univention ...
CS2254 os
... Memory Management: Background – Swapping – Contiguous memory allocation – Paging – Segmentation – Segmentation with paging. Virtual Memory: Background – Demand paging – Process creation – Page replacement – Allocation of frames – Thrashing. Case Study: Memory management in Linux Objective: 1. To und ...
... Memory Management: Background – Swapping – Contiguous memory allocation – Paging – Segmentation – Segmentation with paging. Virtual Memory: Background – Demand paging – Process creation – Page replacement – Allocation of frames – Thrashing. Case Study: Memory management in Linux Objective: 1. To und ...
VPN: Virtual Private Network
... corporate intranet over a shared infrastructure using dedicated connections. In this example, the VPN is often an alternative to fax, snail mail. The extranet VPN facilitates ecommerce. ...
... corporate intranet over a shared infrastructure using dedicated connections. In this example, the VPN is often an alternative to fax, snail mail. The extranet VPN facilitates ecommerce. ...
ppt - Computer and Information Science
... Tanenbaum & Bo, Modern Operating Systems:4th ed., (c) 2013 Prentice-Hall, Inc. All rights reserved. ...
... Tanenbaum & Bo, Modern Operating Systems:4th ed., (c) 2013 Prentice-Hall, Inc. All rights reserved. ...
embedded Operating Systems
... start being developed as soon as possible. A developer may have kernel to make it capable of real-time operation. That was vermade a determination to use a traditional RTOS, but does not sion 3.0, released in the latter half of 2000. Microsoft has also released an embedded version of Windows want to ...
... start being developed as soon as possible. A developer may have kernel to make it capable of real-time operation. That was vermade a determination to use a traditional RTOS, but does not sion 3.0, released in the latter half of 2000. Microsoft has also released an embedded version of Windows want to ...
Understanding the Methods of Network Attacks
... intentional or unintentional misuse of information systems. Social engineering is an example of unintentional misuse. To illustrate this concept, consider a situation in which an outside attacker calls a receptionist. The attacker pretends to be a member of the company’s IT department, and he convin ...
... intentional or unintentional misuse of information systems. Social engineering is an example of unintentional misuse. To illustrate this concept, consider a situation in which an outside attacker calls a receptionist. The attacker pretends to be a member of the company’s IT department, and he convin ...
Towards a Trustworthy Android Ecosystem
... – The number is increasing consistently – Anti-malware ineffective at catching zero-day and polymorphic malware ...
... – The number is increasing consistently – Anti-malware ineffective at catching zero-day and polymorphic malware ...
Expediting Incident Response with Foundstone ERS
... “Protect and proceed” focuses on limiting damage and restoring service. The CSIRT collects evidence for these ends, not to put an intruder in jail. “Pursue and prosecute” takes a different approach. An intruder might be allowed limited access to a target network to determine the scope of the compro ...
... “Protect and proceed” focuses on limiting damage and restoring service. The CSIRT collects evidence for these ends, not to put an intruder in jail. “Pursue and prosecute” takes a different approach. An intruder might be allowed limited access to a target network to determine the scope of the compro ...
6up-pdf - ETH Systems Group
... – Arguably complicates design – Q. On which thread does the thread scheduler run? – A. On the first thread (#1) Every context switch is actually two! – Linux et.al. replicate this, and try to optimize it. ...
... – Arguably complicates design – Q. On which thread does the thread scheduler run? – A. On the first thread (#1) Every context switch is actually two! – Linux et.al. replicate this, and try to optimize it. ...
Silberschatz, Galvin and Gagne ©2009 Operating System Concepts
... Page fault executes when memory access error ...
... Page fault executes when memory access error ...
ppt - UF CISE
... Typically system has many processes, some user, some operating system running concurrently on one or more CPUs ...
... Typically system has many processes, some user, some operating system running concurrently on one or more CPUs ...
COS 318: Operating Systems Processes and Threads Kai Li Computer Science Department
... • CISC machines have a special instruction to save and restore all registers on stack • RISC: reserve registers for kernel or have way to carefully save one and then continue ...
... • CISC machines have a special instruction to save and restore all registers on stack • RISC: reserve registers for kernel or have way to carefully save one and then continue ...
PDF slides
... The operating system is responsible for the following activities in connection with process management: Creating and deleting both user and system processes Suspending and resuming processes Providing mechanisms for process synchronization Providing mechanisms for process communication ...
... The operating system is responsible for the following activities in connection with process management: Creating and deleting both user and system processes Suspending and resuming processes Providing mechanisms for process synchronization Providing mechanisms for process communication ...
Chapter 13 I/O Hardware
... Determine device holding file Translate name to device representation Physically read data from disk into buffer Make data available to requesting process Return control to process ...
... Determine device holding file Translate name to device representation Physically read data from disk into buffer Make data available to requesting process Return control to process ...