Building a MAC-Based Security Architecture for the Xen
... These goals are derived from the requirements of commercial environments. Hypervisor security approaches aimed at high assurance have proven useful in environments that give security the highest priority. These approaches control both explicit and implicit communication channels between VMs. We beli ...
... These goals are derived from the requirements of commercial environments. Hypervisor security approaches aimed at high assurance have proven useful in environments that give security the highest priority. These approaches control both explicit and implicit communication channels between VMs. We beli ...
Scheme-2010
... To make the students understand the structure of computers and internal organization of different units like memory, I/O devices, registers. To study in detail the operation of arithmetic unit including the algorithms and implementation of fixed and floating point addition, subtraction, multiplicati ...
... To make the students understand the structure of computers and internal organization of different units like memory, I/O devices, registers. To study in detail the operation of arithmetic unit including the algorithms and implementation of fixed and floating point addition, subtraction, multiplicati ...
Active Networking
... • An EE is installed in a node by/under management control. • AAs are dynamically deployed and may be transient or persistant. • Expect: 1 nodeOS, a few EEs, many AAs in each active node. ...
... • An EE is installed in a node by/under management control. • AAs are dynamically deployed and may be transient or persistant. • Expect: 1 nodeOS, a few EEs, many AAs in each active node. ...
Abstract - PG Embedded systems
... without using periodic table-update messages like table-driven routing protocols do. DSR was specifically designed for use in multi-hop wireless ad hoc networks. Ad-hoc protocol allows the network to be completely self-organizing and selfconfiguring which means that there is no need for an existing ...
... without using periodic table-update messages like table-driven routing protocols do. DSR was specifically designed for use in multi-hop wireless ad hoc networks. Ad-hoc protocol allows the network to be completely self-organizing and selfconfiguring which means that there is no need for an existing ...
Threads - ukiacrew it
... space. The former involves API functions implemented solely within user space, with no kernel support. The latter involves system calls, and requires a kernel with thread library support. There are three main thread libraries in use today: ...
... space. The former involves API functions implemented solely within user space, with no kernel support. The latter involves system calls, and requires a kernel with thread library support. There are three main thread libraries in use today: ...
The Application Kernel Approach - a Novel Approach for Adding
... logical processors [31] and several other manufacturers are in the process of introducing on-chip multiprocessors [21, 39]. With multiprocessors becoming prevalent, good operating system support is crucial to benefit from the increased computing capacity. We are currently working on a project togeth ...
... logical processors [31] and several other manufacturers are in the process of introducing on-chip multiprocessors [21, 39]. With multiprocessors becoming prevalent, good operating system support is crucial to benefit from the increased computing capacity. We are currently working on a project togeth ...
Slide 1
... Speedup - the final measure of success Parallelism vs Concurrency Actual vs possible by application Granularity Size of the concurrent tasks Reconfigurability Number of processors Communication cost Preemption v. non-preemption Co-scheduling Some things better scheduled togethe ...
... Speedup - the final measure of success Parallelism vs Concurrency Actual vs possible by application Granularity Size of the concurrent tasks Reconfigurability Number of processors Communication cost Preemption v. non-preemption Co-scheduling Some things better scheduled togethe ...
Route maintenance overheads in DHT overlays
... Given any flux in the network, and any maintenance strategy, what equilibrium state will the network operate in, and what will the maintenance cost and performance in the equilibrium state be? ...
... Given any flux in the network, and any maintenance strategy, what equilibrium state will the network operate in, and what will the maintenance cost and performance in the equilibrium state be? ...
Chapter 7 Lecture Presentation
... Perform error checking on header only, so packet can be forwarded as soon as header is received & processed Assumes that all lines are available to transmit the packet immediately Desirable for applications such as VoIP, streaming which has a delay requirement but can tolerate some errors Appropriat ...
... Perform error checking on header only, so packet can be forwarded as soon as header is received & processed Assumes that all lines are available to transmit the packet immediately Desirable for applications such as VoIP, streaming which has a delay requirement but can tolerate some errors Appropriat ...
Configuring Input and Output Devices_PPT_ch06
... combines Red Hat hardware, software, and plug-in compatibility information into a single publication – For Mac OS X, use Apple Macintosh hardware such as the iMac to ensure compatibility ...
... combines Red Hat hardware, software, and plug-in compatibility information into a single publication – For Mac OS X, use Apple Macintosh hardware such as the iMac to ensure compatibility ...
ppt
... On multiprocessor systems, with several CPUs, it would make sense for a process to have several CPU contexts (threads of control) Multiple threads of control could run in the same address space on a single CPU system too! o ...
... On multiprocessor systems, with several CPUs, it would make sense for a process to have several CPU contexts (threads of control) Multiple threads of control could run in the same address space on a single CPU system too! o ...
Mark Bull
... – Implicit point-to-point synchronisation may be replaced by (more expensive) OpenMP barriers. – In the pure MPI code, the intra-node messages will often be naturally overlapped with inter-node messages • Harder to overlap inter-thread communication with inter-node ...
... – Implicit point-to-point synchronisation may be replaced by (more expensive) OpenMP barriers. – In the pure MPI code, the intra-node messages will often be naturally overlapped with inter-node messages • Harder to overlap inter-thread communication with inter-node ...
Slides
... • Relatively simple problems, such as the dining philosophers problem, can be very difficult to solve • Look for abstractions to simplify solutions ...
... • Relatively simple problems, such as the dining philosophers problem, can be very difficult to solve • Look for abstractions to simplify solutions ...
CN2-Unit-1-Packet-switching-networks-by-Deepa
... increased to 7.Node 4 and Node 5 finds the shortest path is not changed. Node 2 transmits its updates to node1,node4 and node 5 and transmits its updates to node 1 and 4. (update 4) Node 1 finds its shortest path is through either node 2 or node 3 with cost 9.Suppose that node 1 chooses node 2.Nod ...
... increased to 7.Node 4 and Node 5 finds the shortest path is not changed. Node 2 transmits its updates to node1,node4 and node 5 and transmits its updates to node 1 and 4. (update 4) Node 1 finds its shortest path is through either node 2 or node 3 with cost 9.Suppose that node 1 chooses node 2.Nod ...
Proceedings of USITS ’03: 4th USENIX Symposium on Internet Technologies and Systems
... We sketch the proof assuming every attempted long-distance link is successful. However as noted above in Section 3.1, some of these connections in fact are rejected because the intended target of the link is \saturated" with 2k incoming links. We account for this implementation detail by noting that ...
... We sketch the proof assuming every attempted long-distance link is successful. However as noted above in Section 3.1, some of these connections in fact are rejected because the intended target of the link is \saturated" with 2k incoming links. We account for this implementation detail by noting that ...
Figure 11.01 - 醫學資訊系 鄭仁亮教授
... NFS is standard UNIX client-server file sharing protocol CIFS is standard Windows protocol Standard operating system file calls are translated into remote calls ...
... NFS is standard UNIX client-server file sharing protocol CIFS is standard Windows protocol Standard operating system file calls are translated into remote calls ...
ch11
... NFS is standard UNIX client-server file sharing protocol CIFS is standard Windows protocol Standard operating system file calls are translated into remote calls ...
... NFS is standard UNIX client-server file sharing protocol CIFS is standard Windows protocol Standard operating system file calls are translated into remote calls ...
BIOS (Basic Input Output Service)
... Self Test) Boot the computer by providing a basic set of instructions. • Load the operating system after turning on the computer • Provide set-up program for changing BIOS parameters • Provide low-level routines for the communications between OS and hardware devices. • This hardware integrated with ...
... Self Test) Boot the computer by providing a basic set of instructions. • Load the operating system after turning on the computer • Provide set-up program for changing BIOS parameters • Provide low-level routines for the communications between OS and hardware devices. • This hardware integrated with ...
Process Control and Description
... that are necessary for its management, such as process ID, process state, location in memory, etc.. At minimum, a process includes a program, or a set of programs, to be executed, together with a set of data locations for local and global variables, and constants. Thus, a process must be assigned en ...
... that are necessary for its management, such as process ID, process state, location in memory, etc.. At minimum, a process includes a program, or a set of programs, to be executed, together with a set of data locations for local and global variables, and constants. Thus, a process must be assigned en ...
Sparse placement of electronic switching nodes
... the advantages of signal transparency, bit-rate transparency, and protocol transparency. Current technological limitations and issues in network control and management, however, still make these systems difficult to implement.3−5 In addition, payloads may require electronic regeneration en route to ...
... the advantages of signal transparency, bit-rate transparency, and protocol transparency. Current technological limitations and issues in network control and management, however, still make these systems difficult to implement.3−5 In addition, payloads may require electronic regeneration en route to ...
Selective and Early Threat Detection in Large Networked
... the machine targeted by the attack, and an identifier of the vulnerability that the attack tried to exploit. These information can be easily extracted from the alerts produced by signaturebased NIDSes. As an example, all the alerts produced by Snort [34] (a widely deployed open source NIDS) include ...
... the machine targeted by the attack, and an identifier of the vulnerability that the attack tried to exploit. These information can be easily extracted from the alerts produced by signaturebased NIDSes. As an example, all the alerts produced by Snort [34] (a widely deployed open source NIDS) include ...
Distributed operating system
A distributed operating system is a software over a collection of independent, networked, communicating, and physically separate computational nodes. Each individual node holds a specific software subset of the global aggregate operating system. Each subset is a composite of two distinct service provisioners. The first is a ubiquitous minimal kernel, or microkernel, that directly controls that node’s hardware. Second is a higher-level collection of system management components that coordinate the node's individual and collaborative activities. These components abstract microkernel functions and support user applications.The microkernel and the management components collection work together. They support the system’s goal of integrating multiple resources and processing functionality into an efficient and stable system. This seamless integration of individual nodes into a global system is referred to as transparency, or single system image; describing the illusion provided to users of the global system’s appearance as a single computational entity.