Document
... 10.3 Processes and Message Passing Processes are imperative programs with their own memory spaces. These programs cannot refer to each others’ variables, and consequently they do not exhibit the same difficulties as threads. Communication between the programs must occur via mechanisms provided by t ...
... 10.3 Processes and Message Passing Processes are imperative programs with their own memory spaces. These programs cannot refer to each others’ variables, and consequently they do not exhibit the same difficulties as threads. Communication between the programs must occur via mechanisms provided by t ...
Operating system
... EEPROM is a special type of PROM that can be erased by exposing it to an electrical charge. EEPROM retains its contents even when the power is turned off. firmware: Firmware is software that is embedded in a piece of hardware. You can think of firmware simply as "software for hardware.“ Typical exam ...
... EEPROM is a special type of PROM that can be erased by exposing it to an electrical charge. EEPROM retains its contents even when the power is turned off. firmware: Firmware is software that is embedded in a piece of hardware. You can think of firmware simply as "software for hardware.“ Typical exam ...
zombie. - People Search Directory
... 3. Memory-Resident Viruses • Stays in RAM, either hiding at the top of memory or down among the interrupt vectors (the last few hundred bytes are generally unused) • Capture one of the interrupt vectors – Putting it’s own address there – Call the interrupt after it does what it does – Benefit.. It ...
... 3. Memory-Resident Viruses • Stays in RAM, either hiding at the top of memory or down among the interrupt vectors (the last few hundred bytes are generally unused) • Capture one of the interrupt vectors – Putting it’s own address there – Call the interrupt after it does what it does – Benefit.. It ...
Chapter 5
... point-and-click technology (graphical user interface) • Excellent in: – Graphics display – Processing capabilities – System reliability – Document recovery • Fewer software applications available © 2009 Prentice-Hall, Inc. ...
... point-and-click technology (graphical user interface) • Excellent in: – Graphics display – Processing capabilities – System reliability – Document recovery • Fewer software applications available © 2009 Prentice-Hall, Inc. ...
introduction to unix system
... • One of the biggest reasons for using Unix is networking capability. With other operating systems, additional software must be purchased for networking. With Unix, networking capability is simply part of the operating system. Unix is ideal for such things as world wide e-mail and connecting to the ...
... • One of the biggest reasons for using Unix is networking capability. With other operating systems, additional software must be purchased for networking. With Unix, networking capability is simply part of the operating system. Unix is ideal for such things as world wide e-mail and connecting to the ...
Information Security Rootkits Dr. Randy M. Kaplan 2 Rootkits What is
... The Virus Problem Understanding rootkit technology is very important defending against viruses Virus programmers have been using rootkits for many years to “heat up” their viruses ...
... The Virus Problem Understanding rootkit technology is very important defending against viruses Virus programmers have been using rootkits for many years to “heat up” their viruses ...
Set 13
... Clocks and Timers Provide current time, elapsed time, timer Programmable interval timer used for timings, periodic interrupts ioctl (on UNIX) covers odd aspects of I/O such as clocks and ...
... Clocks and Timers Provide current time, elapsed time, timer Programmable interval timer used for timings, periodic interrupts ioctl (on UNIX) covers odd aspects of I/O such as clocks and ...
Figure 5.01
... application may allow a program to continue running even if part of it is blocked or is performing a length operation, thereby increasing responsiveness to the user. For example, a multithreaded Web browser could allow user interaction in one thread while an image was being loaded in another thread. ...
... application may allow a program to continue running even if part of it is blocked or is performing a length operation, thereby increasing responsiveness to the user. For example, a multithreaded Web browser could allow user interaction in one thread while an image was being loaded in another thread. ...
KaranOberoi
... »Active Directory allows administrators to define, arrange and manage objects, such as user data, printers and servers, so they are available to users and applications throughout the organization. ...
... »Active Directory allows administrators to define, arrange and manage objects, such as user data, printers and servers, so they are available to users and applications throughout the organization. ...
Lessons Learned from 30 Years of MINIX,
... MINIX, I was extremely sensitive to any bugs or flaws that turned up. All developers should try to use their own systems as early as feasible so they can see what users will experience. Lesson. Eat your own dog food. The microkernel was indeed small. Only the scheduler, low-level process management, ...
... MINIX, I was extremely sensitive to any bugs or flaws that turned up. All developers should try to use their own systems as early as feasible so they can see what users will experience. Lesson. Eat your own dog food. The microkernel was indeed small. Only the scheduler, low-level process management, ...
EAP
... • Easily encapsulated within any data link protocol • Provides a generalized framework for all sorts of authentication methods. • Simpler interoperability and compatibility across authentication methods • For example, when you dial a remote access server(RAS) and use EAP as part of your PPP connecti ...
... • Easily encapsulated within any data link protocol • Provides a generalized framework for all sorts of authentication methods. • Simpler interoperability and compatibility across authentication methods • For example, when you dial a remote access server(RAS) and use EAP as part of your PPP connecti ...
Basic Concepts of Real Time Operating Systems
... instance no additional instance will be issued into the system. Periodic tasks reflect directly the “sense–execute–act” loop in control applications. They therefore represent the main workload of embedded systems. Any RTOS usually is optimized into the direction of handling such tasks in an optimize ...
... instance no additional instance will be issued into the system. Periodic tasks reflect directly the “sense–execute–act” loop in control applications. They therefore represent the main workload of embedded systems. Any RTOS usually is optimized into the direction of handling such tasks in an optimize ...
Chapter 3 Operating-System Structures 2
... • A distributed system is a collection processors that do not share memory or a clock. Each processor has its own local memory. • The processors in the system are connected through a communication network. • A distributed system provides user access to various system resources. • Access to a shared ...
... • A distributed system is a collection processors that do not share memory or a clock. Each processor has its own local memory. • The processors in the system are connected through a communication network. • A distributed system provides user access to various system resources. • Access to a shared ...
ch1
... information. The operating system in such cases is designed to maximize resource utilization -- to assure that all available CPU time, memory, and I/O are used efficiently and that no individual users takes more than their air share. ...
... information. The operating system in such cases is designed to maximize resource utilization -- to assure that all available CPU time, memory, and I/O are used efficiently and that no individual users takes more than their air share. ...
VMworld 2007 Breakout Template
... Hypervisor Platform Direction In a phase of tremendous innovation driven by: Proliferation of cores and potential inefficiencies ...
... Hypervisor Platform Direction In a phase of tremendous innovation driven by: Proliferation of cores and potential inefficiencies ...
ch2
... concurrently, resources must be allocated to each of them Many types of resources - Some (such as CPU cycles, main memory, and file storage) may have special allocation code, others (such as I/O devices) may have general request and release code. Accounting - To keep track of which users use how ...
... concurrently, resources must be allocated to each of them Many types of resources - Some (such as CPU cycles, main memory, and file storage) may have special allocation code, others (such as I/O devices) may have general request and release code. Accounting - To keep track of which users use how ...
Ch 1 PowerPoint Slides
... • Technique for sharing the CPU among runnable processes – Process may be blocked on I/O – Process may be blocked waiting for other resource, including the CPU ...
... • Technique for sharing the CPU among runnable processes – Process may be blocked on I/O – Process may be blocked waiting for other resource, including the CPU ...
This is a software platform and operating system for mobile
... user base will not be tracked in case of a server hack. CyanogenMod is available for free download for any user willing to root the device. The new developments are rolled out only after careful review of the code and testing of all the features. However, rooting a phone is not 100% successful. If s ...
... user base will not be tracked in case of a server hack. CyanogenMod is available for free download for any user willing to root the device. The new developments are rolled out only after careful review of the code and testing of all the features. However, rooting a phone is not 100% successful. If s ...
Week 1
... Linux and UNIX • Much of our emphasis will be on Linux and UNIX, since that’s the OS in most servers – The labs will use the Ubuntu distribution of Linux – What other kinds of server operating system are there? – What kind of operating systems are there, other than server OS’s? ...
... Linux and UNIX • Much of our emphasis will be on Linux and UNIX, since that’s the OS in most servers – The labs will use the Ubuntu distribution of Linux – What other kinds of server operating system are there? – What kind of operating systems are there, other than server OS’s? ...
WP- Evolution of Network Security
... The core technologies that operate the Internet are no more secure now than they were back in the trusting days when the Internet was first developed. However, now the Internet has grown to massive proportions and has millions of people connected to it, many of whom are highly untrustworthy. Online ...
... The core technologies that operate the Internet are no more secure now than they were back in the trusting days when the Internet was first developed. However, now the Internet has grown to massive proportions and has millions of people connected to it, many of whom are highly untrustworthy. Online ...
mryan_CA549_week1 - Redbrick
... values, keep track of the stack, keep track of whether runnable, and some other stuff. For a context switch, only the TCB needs to be involved. Process switching involves the whole PCB including the TCP. Some systems allow multiple threads and multiple TCBs per process. All of them share the resourc ...
... values, keep track of the stack, keep track of whether runnable, and some other stuff. For a context switch, only the TCB needs to be involved. Process switching involves the whole PCB including the TCP. Some systems allow multiple threads and multiple TCBs per process. All of them share the resourc ...
Network Operating Systems - Partha Dasgupta`s Workstation!
... The most common service that a network operating system provides is file service. File services allow user of a set of computers to access files and other persistent storage object from any computer connected to the network. The files are stored in one or more machines called the file server(s). The ...
... The most common service that a network operating system provides is file service. File services allow user of a set of computers to access files and other persistent storage object from any computer connected to the network. The files are stored in one or more machines called the file server(s). The ...