Set 1
... All data in memory before and after processing All instructions in memory in order to execute Memory management determines what is in memory when z ...
... All data in memory before and after processing All instructions in memory in order to execute Memory management determines what is in memory when z ...
What is an Operating System?
... Typically system has many processes, some user, some operating system running concurrently on one or more CPUs Concurrency by multiplexing the CPUs among the processes ...
... Typically system has many processes, some user, some operating system running concurrently on one or more CPUs Concurrency by multiplexing the CPUs among the processes ...
CSCI 315 Lecture 3
... • Turnaround time – amount of time to execute a particular process. • Waiting time – amount of time a process has been waiting in the ready queue. • Response time – amount of time it takes from when a request was submitted until the first response is produced, not output (for timesharing environment ...
... • Turnaround time – amount of time to execute a particular process. • Waiting time – amount of time a process has been waiting in the ready queue. • Response time – amount of time it takes from when a request was submitted until the first response is produced, not output (for timesharing environment ...
Computer-System Architecture
... n Device controller transfers blocks of data from buffer storage directly to main memory without CPU intervention. n Only one interrupt is generated per block, rather than the one interrupt per byte. ...
... n Device controller transfers blocks of data from buffer storage directly to main memory without CPU intervention. n Only one interrupt is generated per block, rather than the one interrupt per byte. ...
Chapter 9 - EECS People Web Server
... Network IDSs must match known and unknown attack strategies against their knowledge base to determine whether an attack has occurred These systems yield many more false-positive readings than do host-based IDSs, because they are attempting to read the network activity pattern to determine what i ...
... Network IDSs must match known and unknown attack strategies against their knowledge base to determine whether an attack has occurred These systems yield many more false-positive readings than do host-based IDSs, because they are attempting to read the network activity pattern to determine what i ...
System Virtualization 1
... (without trapping) in privileged and nonpriv mode • e.g. Intel “Store into Flags” COMP25212 ...
... (without trapping) in privileged and nonpriv mode • e.g. Intel “Store into Flags” COMP25212 ...
teaching.idallen.com
... resources, sharing them where necessary. The file system is often a separate process, as are other parts of the kernel and various service daemons. The shell and other basic utilities layer: When you type in a command, it's to the shell at the command-line interface (or CLI). Some commands are built ...
... resources, sharing them where necessary. The file system is often a separate process, as are other parts of the kernel and various service daemons. The shell and other basic utilities layer: When you type in a command, it's to the shell at the command-line interface (or CLI). Some commands are built ...
Operating Systems, 6th ed. Test Bank Chapter 4 Page 1 of 15
... Chapter 5 – Concurrency: Mutual Exclusion and Synchronization 7. In a symmetric multiprocessor system, the kernel can execute on any processor, and typically each processor does self-scheduling from the pool of available processes or threads. 8. In most modern computer systems, processors generally ...
... Chapter 5 – Concurrency: Mutual Exclusion and Synchronization 7. In a symmetric multiprocessor system, the kernel can execute on any processor, and typically each processor does self-scheduling from the pool of available processes or threads. 8. In most modern computer systems, processors generally ...
Chapter 1: Introduction to Operating Systems
... the software that controls the hardware. • Landscape of computer systems has evolved significantly, requiring a more complicated ...
... the software that controls the hardware. • Landscape of computer systems has evolved significantly, requiring a more complicated ...
Quiz 1 - FSU Computer Science
... multiple processors its own memory another "virtual" computer to assist in its operations more memory than is physically available on the machine ...
... multiple processors its own memory another "virtual" computer to assist in its operations more memory than is physically available on the machine ...
Application Security
... but you don’t update your libraries. Until you do, attackers can easily find and exploit these flaw in your app. • Scenario #2: The app server admin console is automatically installed and not removed. Default accounts aren’t changed. Attacker discovers the standard admin pages are on your server, lo ...
... but you don’t update your libraries. Until you do, attackers can easily find and exploit these flaw in your app. • Scenario #2: The app server admin console is automatically installed and not removed. Default accounts aren’t changed. Attacker discovers the standard admin pages are on your server, lo ...
What is a Device Driver?
... • How does the CPU give commands to a device via a bus? – A device controller has a number of registers for holding signals. – The CPU can effectively write to and read from these. – Some registers hold data; some hold control signals. ...
... • How does the CPU give commands to a device via a bus? – A device controller has a number of registers for holding signals. – The CPU can effectively write to and read from these. – Some registers hold data; some hold control signals. ...
Chapter 4
... A user may change the network address of a w/s and may make it look as another w/s A user may eavesdrop on a session and mount a replay attack later ...
... A user may change the network address of a w/s and may make it look as another w/s A user may eavesdrop on a session and mount a replay attack later ...
Operating system
... - WINSOCK.DLL (TCP/IP) - GDI.DLL (Graphical interface) - KERNAL32.DLL (Kernel) ...
... - WINSOCK.DLL (TCP/IP) - GDI.DLL (Graphical interface) - KERNAL32.DLL (Kernel) ...
Device Drivers: Their Function in an Operating System
... between a personal digital assistant and a printer to allow a document to be printed. Jini does not actually download the services themselves. Instead, it downloads an interface through which a device can interact with the services (Cravotta, 2000). I/O drivers with some operating systems, such as L ...
... between a personal digital assistant and a printer to allow a document to be printed. Jini does not actually download the services themselves. Instead, it downloads an interface through which a device can interact with the services (Cravotta, 2000). I/O drivers with some operating systems, such as L ...
Concurrent Processes
... Java • Allows programmers to code applications that can run on any computer • Developed at Sun Microsystems, Inc. (1995) • Solves several issues – High software development costs for different incompatible computer architectures – Distributed client-server environment needs – Internet and World Wid ...
... Java • Allows programmers to code applications that can run on any computer • Developed at Sun Microsystems, Inc. (1995) • Solves several issues – High software development costs for different incompatible computer architectures – Distributed client-server environment needs – Internet and World Wid ...
Chapter 2: System Structures
... Some of them are simply user interfaces to system calls; others ...
... Some of them are simply user interfaces to system calls; others ...
Vulnerability Management: Tools, Challenges and Best Practices
... desktop solution requires client installs, which could use more resources than are available. Rogue desktop clients also become another issue, since Desktop Inventory will not find them. Overall, this solution seems scalable, and integrated, yet may not provide the flexibility required for ever chan ...
... desktop solution requires client installs, which could use more resources than are available. Rogue desktop clients also become another issue, since Desktop Inventory will not find them. Overall, this solution seems scalable, and integrated, yet may not provide the flexibility required for ever chan ...
ppt
... • in parent, fork() returns a non-zero integer • in child, fork() returns a zero. • difference allows parent and child to distinguish ...
... • in parent, fork() returns a non-zero integer • in child, fork() returns a zero. • difference allows parent and child to distinguish ...
threads
... Lower overhead in creating and context switching threads than processes context switch is 5 times faster Thread creation is 30 times faster Utilization of multi-processor architectures Multiple threads can run on multiple processors ...
... Lower overhead in creating and context switching threads than processes context switch is 5 times faster Thread creation is 30 times faster Utilization of multi-processor architectures Multiple threads can run on multiple processors ...
Introduction to Computer Security
... • Overt channel – Communication channel that is used in the way it is intended to use ...
... • Overt channel – Communication channel that is used in the way it is intended to use ...
PowerPoint 簡報
... The high-level networking code is here (e.g. socket.c). The low-level network drivers pass received packets up to and get packets to send from this level, which may pass the data to a user-level application, discard the data, or use it in-kernel, depending on the packet. • The net/core directory con ...
... The high-level networking code is here (e.g. socket.c). The low-level network drivers pass received packets up to and get packets to send from this level, which may pass the data to a user-level application, discard the data, or use it in-kernel, depending on the packet. • The net/core directory con ...
Windows Server 2008
... • A device driver translates computer code to display text on a screen, or translates movements of a mouse into action. • A separate device driver is usually present for each I/O device. • Operating systems have a standardized way of communicating with a certain type of device driver. • The device d ...
... • A device driver translates computer code to display text on a screen, or translates movements of a mouse into action. • A separate device driver is usually present for each I/O device. • Operating systems have a standardized way of communicating with a certain type of device driver. • The device d ...
