network operating systems comparison

... moved into the operating systems, networkoperating systems evolved Like regular operating systems, network operating systems provide services to the programs that run ontop of the operating system ... file systems) Such features make network operating systemsindispensable in large networked environments In the early 1980’s network operating systems were mainly research projects Many network ... unified view of the network In fact, the goal of network operating systems is network transparency, that is, the network becomes invisible 3 Services for Network Operating Systems System-wide

Ngày tải lên: 11/12/2016, 07:43

... Trang 1Survey of Network Operating Systems (NOS) 1 Trang 2Introduction to Network Operating Systems (NOS) 2 Trang 3Network Server3 Trang 4Local Directory Listing4 ... 8Novell Operating Systems8 Trang 9NetWare Security9 Trang 10Microsoft Network Operating Systems 10 Trang 11Windows NT Network Services11 Trang 12Windows NT Interoperability12 Trang 13Other Operating ... Trang 11Windows NT Network Services11 Trang 12Windows NT Interoperability12 Trang 13Other Operating Systems13 Trang 14NOS in Multivendor Environments 14 Trang 15Windows NT Server15 Trang 16Windows

Ngày tải lên: 15/05/2017, 14:44

... results show that Network MIMO systems can be archive high system performance than the non Network-MIMO systems Finally, we have some conclusion and discussion about Network-MIMO systems in Chapter ... ability of network MIMO techniques to increase data rates in multi-user indoor wireless networks of various sizes with various channel schemes The simulation results also show that Network MIMO systems ... MAC fairness  etc 1.3 Network-MIMO systems Network MIMO is a MIMO communication scheme, which falls within the family of techniques that use cooperation in a MIMO systems to increase system

Ngày tải lên: 26/11/2013, 20:49

... code tnd data uses large pages for TLH efficiency Trang 496 CILAPTER 2 / OPERATING SySTEM OVERVIEW Fie systems networking devices are loadable! unloadable drivers (dynamic link libraries) ... 1TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTrrrrrrrrr William Stallings Copyright 2008 ‘This document is an extract from Operating Systems: Internals and Design Principles, Sixth Edition Trang 22.8 LINUX History Linus started ... vser-mode subsystems Native NT APIs are based on the general Kernel handlelobject aehitee- Extensive support for loading/unloading ‘ere! modules, suchas device drivers and filesystems ‘Moles

Ngày tải lên: 08/03/2014, 15:20

... ADVANCES IN NETWORK AND DISTR SYSTEMS SECURITY Cervesato, I (2001a) Typed MSR: Syntax and examples In Information Assurance in Computer Networks: Methods, Models, and Architectures for Network Security ... protocols, electronic commerce Trang 172 ADVANCES IN NETWORK AND DISTR SYSTEMS SECURITY1 Introduction Security protocols are used in distributed systems to protect the secrecy of messages and to ... securing com- puter networks, including both hardware- and software-based techniques to promote dissemination of research results in the field of network security in real-life networks in industry,

Ngày tải lên: 25/03/2014, 11:06

... Trang 1Hệ Điều Hành(Operating Systems) Nguyễn Phan Trung Trang 2Thông tin về môn hocTrang 3Nội dung môn Hệ Điều Hành• Chương ... nhiều người dùng. Trang 7Chương 1 Hệ Điều Hành Giới thiệu tổng quan  Định nghĩa Hệ Điều Hành (Operating System) Trang 8GIỚI THIỆU TỔNG QUANTrang 9Các nhiệm vụ chung của tất cả các os Trang ... gồm các tài nguyên tính tóan cơ bản của máy tính như (CPU, memory, I/O devices) 2 Hệ điều hành (Operating System)-Phân phối tài nguyên, điều khiển và phối hợp các hoạt động của các chương trình

Ngày tải lên: 13/05/2014, 00:29

... 16 1.3 THE OPERATING SYSTEM ZOO 18 1.3.1 Mainframe Operating Systems 18 1.3.2 Server Operating Systems 19 1.3.3 Multiprocessor Operating Systems 19 1.3.4 Personal Computer Operating Systems 19 ... mid-1980s is the growth of networks of personal computers running network operating sys- tems and distributed operating systems (Tanenbaum and Van Steen 2002) In ¢ network operating system, the users ... machine runs its own local operating system and has its own local user (or uSers) Network operating systems are not fundamentally different trom sinele- processor operating systems They obviously

Ngày tải lên: 09/08/2014, 09:21

... of the work for this specific interrupt type (We assume the operating system is written in C the usual choice for all real operating systems.) When it has done its Job, possibly making some process ... Figure 2-5 Skeleton of what the Jowest level of the operating system does when an interrupt occurs. Trang 2 2.2 THREADS In traditional operating systems, each process has an address space and ä ... advantage is that a user-level threads package can be implemented on an operating system that does not support threads All operating systems used to fall into this category and even now some stil] do

Ngày tải lên: 09/08/2014, 09:21

... swapped in or (more likely} by hardware during program execution, Operating Operating Operating Operating Operating Operating Operating Figure 4-5 Memory atlocation changes as processes come ... the operating system copies the Trang 16 4.1.2 Multiprogramming with Fixed Partitions Except on stmple embedded systems, monoprogramming is hardly used any more Most modem systems ... remotely practical in reai systems Its matin function seems to be keeping otherwise unemployed graph theorists off the streets 3.9 SUMMARY Deadlock is a potential problem in any Operating system It

Ngày tải lên: 09/08/2014, 09:21

... For example, file transter over a network often uses a network daemon To send a file somewhere, a user puts it in a network spooling directory Later on, the network dacmon takes it out and transmits ... delivered along with the device Stnce each operating system needs its own drivers device manufacturers commonly supply drivers for severa] popular Operating systems Each device driver normally handles ... or another However, since current operating systems expect drivers to run in the kernel, that 1s the modei we will consider here Since the designers of every operating system know that pieces

Ngày tải lên: 09/08/2014, 09:21

... area network is used as follows The user issues a system call to write data packets to the network The operating system then copies the data to a keme} buffer Then it copies the data to the network ... punched card was king, many (mainframe) operating systems based their file systems on files consisting of 80-character records in effect, card images These systems also supported files of 132-character ... managed by the operating system How they are structured, named, accessed, used, protected, and implemented are major topics in operating system design As a whole, that part of the operating system

Ngày tải lên: 09/08/2014, 09:21

... process scheduling in multimedia systems let us continue our study by looking at multimedia file systems These file systems use a different paradigm than traditional file systems We will first review ... Trang 1464 MULTIMEDIA OPERATING SYSTEMS CHAP 7 All compression systems require two algorithms: one for compressing the data at the source, ... but saves disk space by eliminating intemal fragmentation. Trang 21444 MULTIMEDIA OPERATING SYSTEMS CHAP 7 For comparison purposes, the use of small blocks in Fig 7-18{a) also wastes some disk

Ngày tải lên: 09/08/2014, 09:21

... switch, or a multistage switching network Various operating system configurations are possible, includ- Ing piving cach CPU tts own operating system, having one master Operating sys- tem with the rest ... algorithms Distributed systems are Joosely coupled systems each of whose nodes is a compiete computer with a complete set of peripherals and its own Operating svs- tem Often these systems are spread ... RESEARCH ON MULTIPLE PROCESSOR SYSTEMS In this chapter we have looked at three kinds of multiple processor systems: multiprocessors, multicomputers, and distributed systems Let us also look briefly

Ngày tải lên: 09/08/2014, 09:21

... the file systems Most UNIX systems support multipie file systems, including the Berkeley fast file system, log-structured file system, and various System V file systems All of these file systems ... wider vanety of computers than any other operating system It is the dominant operating system on high-end workstations and servers, but it is also used on systems ranging from notebook computers ... with a great deal of research taking place, but most of it is not directly operating system related Instead, it deals with network security (e.g., email, Web, and e-commerce security), cryptography,

Ngày tải lên: 09/08/2014, 09:21

... mid-1980s is the growth of networks of personal computers running network operating systems and distributed operating systems (Tanenbaum andVan Steen, 2002) In a network operating system, the users ... is using which disk blocks is a typicaloperating system resource management task Trang 23[Page 6 (continued)]1.2 History of Operating Systems Operating systems have been evolving through the ... efficiently by the operating system True distributed operating systems require more than just adding a little code to a uniprocessor operatingsystem, because distributed and centralized systems differ

Ngày tải lên: 12/08/2014, 22:21

... the system highly fault tolerant This functionality is absent from most operating systems On a networked system the optional network server (inet) is also in level 3 Servers cannot do I/O directly, ... application areas (and different kinds of operating systems) have different goals In otherwords, what the scheduler should optimize for is not the same in all systems Three environments worthdistinguishing ... quickly.The difference with interactive systems is that real-time systems run only programs that are intended to furtherthe application at hand Interactive systems are general purpose and may run

Ngày tải lên: 12/08/2014, 22:21

... are easily done, as ultimately they compile into code to perform comparisons of small integers At this most basic level of the operating system testing for even themost unlikely errors is advisable ... terminology In a conventional operating system with a monolithic kernel, the term system call is used to refer to all calls for services provided by the kernel In a modern UNIX-like operating system the ... general-purpose operating system, it is also potentially useful for special purposes, such as embedded support in a portabledevice In such cases a stripped-down version of the operating system

Ngày tải lên: 12/08/2014, 22:21

... user (or theimplementer of an operating system) The difference in data density between inner and outer tracks means a sacrifice in capacity, and more sophisticated systems exist Floppy disk designs ... exhaustivedescription of all of these, and MINIX 3 does not (yet) support RAID, but an introduction to operating systems should at least mention some of the possibilities RAID can be used both to speed disk ... MINIX 3 has beendeveloped on and for newer systems with Pentium-class CPUs, but even among these there are differences.For instance, the oldest Pentium systems use the 16-bit AT bus originally

Ngày tải lên: 12/08/2014, 22:21

... partition and run until itterminates However, nowadays, few, if any, operating systems, support this model, even on mainframe batchsystems [Page 377] 4.1.3 Relocation and Protection Multiprogramming ... use in practical systems Below we will study algorithms that are useful onreal systems [Page 398] 4.4.2 The Not Recently Used Page Replacement Algorithm In order to allow the operating system ... Multiprogramming with Fixed Partitions Except on very simple embedded systems, monoprogramming is hardly used any more Most modern systemsallow multiple processes to run at the same time Having multiple

Ngày tải lên: 12/08/2014, 22:21

... embedded systems, however, the cost increase would be enormous. So the performance of the operating system has significant impact on the costs of embedded systems, especially for single-chip systems. For ... disadvantages of put semaphores apply here as well. Realtime Operating Systems Concepts and Implementation of Microkernels for Embedded Systems Dr. Jürgen Sauermann, Melanie Thelen 2 Concepts 2.1 ... perceived by the user: today’s operating systems consume even more memory and CPU performance than technological development can provide. So the more advanced the operating system, the slower the...

Ngày tải lên: 23/10/2013, 22:15