Principles of Network and System Administration 2nd phần 8 pps

... in ref. [ 284 ] and backup to optical disks is discussed in refs. [65, 320]. Automated tape backup and restore is discussed in ref. [ 184 ] and in the Amanda system [ 283 ]; the AFS backup system is ... nature of possible threats to the security of a human–computer system. 444 CHAPTER 11. PRINCIPLES OF SECURITY Authentication is usually performed at the start of a sessio...

Ngày tải lên: 13/08/2014, 22:21

... Association: Berkeley, CA, 1 987 ), page 28, 1 987 . [2] J. Abbey. The group administration shell and the gash network computing environment. Proceedings of the Eighth Systems Administration Conference (LISA ... engine. Computing Systems. MIT Press: Cambridge, MA, 8: 309, 1995. [42] M. Burgess. Automated system administration with feedback regulation. Software Practice and Ex...

Ngày tải lên: 13/08/2014, 22:21

... nic.cent.net. gnu.org. 86 388 IN NS ns1.gnu.org. gnu.org. 86 388 IN NS ns2.gnu.org. gnu.org. 86 388 IN NS ns2.cent.net. gnu.org. 86 388 IN NS ns3.gnu.org. ;; ADDITIONAL SECTION: nic.cent.net. 101919 IN A 140. 186 .1.4 ns1.gnu.org. ... the system at hand. The aim of this chapter is to learn how to navigate network systems using standard tools, and place each piece of the puzzle i...

Ngày tải lên: 13/08/2014, 22:21

... which replace many of the older Unix equivalents, like ls and cp. GNU software has its own system of installation and set of standards. GNU will also eventually become an operating system in its own right. ... be regarded as one of the unsolved problems of system administration. Part of the problem is that the requirements of each organization are rather different. Ma...

Ngày tải lên: 13/08/2014, 22:21

... Kubicki [ 187 ]. This work Chapter 6 Models of network and system administration Understanding human–computer systems requires an ability to see relationships between seemingly distinct parts of a system. ... build software systems which apply certain principles to the problem of management. Network management has, to some extent, been likened to the process of software d...

Ngày tải lên: 13/08/2014, 22:21

... attempts to keep track of changes in individual systems using a method of revision control. A typical Unix system might consist of thousands of files comprising software and data. All of the files (except ... killed with the kill command on Unix-like systems, or with the Windows Resource Kit’s kill command, or the Task Manager. 8. 2. NETWORKS AND SMALL WORLDS 283 Figure 8. 2:...

Ngày tải lên: 13/08/2014, 22:21

... instance, has four networks: 1 28. 39 .89 .0, 1 28. 39.73.0, 1 28. 39.74.0 which includes 1 28. 38. 75.*.So we would create files master/rev.1 28. 39 .89 , master/rev.1 28. 39.73 etc., one for each network. These ... for the upgrade and contingency plan for loss of some of the hosts. EXERCISES 327 8. What is meant by the environment of a system? 9. How does one find the boundary bet...

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... obtain a share of R c <R/2. 10.6. IP ROUTING AND FORWARDING 405 fe80::/10 fe80::a00:20ff:fe85:bb11 U 1 0 le0 ff00:: /8 fe80::a00:20ff:fe85:bb11 U 1 0 le0 default fe80::2a0:c9ff:fe 28: 2 489 UG 1 0 ... Scientific Principles of Network and System Administration, J. Wiley & Sons, 2004. 10.4. ALTERNATIVE NETWORK TRANSPORT TECHNOLOGIES 399 by N bits, or wavelengths of the...

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... ANALYTICAL SYSTEM ADMINISTRATION systems fall into two categories, depending on how we choose our problem to analyze. These are called open systems and closed systems. • Open system: This is a subsystem ... about every file and yields a summary of the named directory instead. 5 18 CHAPTER 13. ANALYTICAL SYSTEM ADMINISTRATION 0 6 12 18 24 0 7 14 21 28 Figure 13.7: The daily a...

Ngày tải lên: 13/08/2014, 22:21