3 examples of network operating system
Principles of Network and System Administration 2nd phần 3 pptx
Ngày tải lên :
13/08/2014, 22:21
... currently installed.)
Unpacking bison (from /bison_1%3a1 .35 -3_ i386.deb)
Setting up bison (1 .35 -3)
122 CHAPTER 4. HOST MANAGEMENT
ã IEEE 139 4 disks: Implementations include Sony’s iLink and ... of software within a directory tree: some software
packages compile the names of important files into software binaries. Explain
why the use of a universal naming scheme guarantees that the software ... to the system before change strikes.
A plan is needed for testing new versions of software. Package systems for
software make this process easier, since one can allow several versions of software
to...
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oracle database quick installation guide 10g release 1 (10.1.0.3) for the solaris operating system (x86)
Ngày tải lên :
07/04/2014, 15:52
... must change any of the current values, follow these
steps:
a. Create a backup copy of the /etc /system file, for
example:
# cp /etc /system /etc /system. orig
b. Open the /etc /system file in any ... display on this system:
$ xhost +
3. Complete one of the following steps:
■ If the terminal session is not connected to the system
where you want to install the software, log in to that
system as ... Guide 13
■ 3. 7 GB of free disk space is available for the Oracle
software and database on a single file system
Note: While installing the Oracle database on a disk
drive separate from the software...
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principles of network and system administration
Ngày tải lên :
03/06/2014, 01:29
... 33 2
9 .3 Installing a new service . . 33 3
9.4 Summoningdaemons 33 3
9.5 Setting up the DNS nameservice . . 33 7
9.6 SettingupaWWWserver 35 3
9.7 E-mailconfiguration 36 5
9.8 OpenLDAPdirectoryservice 37 3
9.9 ... Game-theoreticalstrategyselection 30 4
8.10 Monitoring 31 3
8.11 Systemperformancetuning 31 4
8.12 Principlesofqualityassurance 32 4
9 Application-level services 33 1
9.1 Application-level services . 33 1
9.2 Proxiesandagents 33 2
9 .3 ... MountingNFSdisks 37 4
9.10 Samba 37 8
9.11 Theprinterservice 37 9
9.12 Javawebandenterpriseservices 38 2
10 Network- level services 39 1
10.1 TheInternet 39 1
10.2 Arecapofnetworkingconcepts 39 2
10 .3 Gettingtraffictoitsdestination...
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Principles of Network and System Administration 2nd phần 2 doc
Ngày tải lên :
13/08/2014, 22:21
... this:
128 .39 .0.0 (255.255.252.0)
128 .39 .1.0
128 .39 .2.0
128 .39 .3. 0
128 .39 .4.0 (255.255.254.0)
128 .39 .5.0
128 .39 .6.0 (255.255.255.0)
128 .39 .7.0 (255.255.255.0)
72 CHAPTER 2. SYSTEM COMPONENTS
3. What ... number of hosts on the subnets which
have this mask.
128 .39 .2.0
128 .39 .3. 0
128 .39 .4.0
128 .39 .5.0
128 .39 .6.0
128 .39 .7.0
It is not usually necessary for every host on an entire class B network ... now used throughout the class B network, we would have single subnets
formed as follows:
128 .39 .0.0
128 .39 .1.0
128 .39 .2.0
128 .39 .3. 0
128 .39 .4.0
128 .39 .5.0
Each of these subnets now contains 510...
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Principles of Network and System Administration 2nd phần 4 potx
Ngày tải lên :
13/08/2014, 22:21
... competing system to
SNMP called COPS-PR [101].
6 .3. NETWORK ADMINISTRATION MODELS 207
6 .3 Network administration models
The management of clusters of systems leads to the concept of logistic networks.
Here ... 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 develop-
ment in the System ... territory of more
intelligent agent systems like cfengine and PIKT.
Despite the shortcomings of SNMP for host operations, many operating systems
do define their own MIBs for the collection of system...
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Principles of Network and System Administration 2nd phần 5 pot
Ngày tải lên :
13/08/2014, 22:21
... freak coincidence of human
social structures; it is a property of a kind of network known as a small-world
network [31 9].
Definition 6 (Small-world network) . There is a class of highly clustered ... services,
like web mail, often consist of a farm of PCs running FreeBSD Unix (this has
retained the record for the most efficient network handling of all the operating
systems to date), backed ... control system [30 2] which keeps master versions of files for
the purpose of distribution across a LAN. Host Factory attempts to keep track
of changes in individual systems using a method of revision...
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Principles of Network and System Administration 2nd phần 6 pot
Ngày tải lên :
13/08/2014, 22:21
... instance, has four networks:
128 .39 .89.0, 128 .39 . 73. 0, 128 .39 .74.0 which includes 128 .38 .75.*.So
we would create files master/rev.128 .39 .89, master/rev.128 .39 . 73 etc.,
one for each network. These ... [30 7, 200, 30 3].
More often than not, performance tuning is related to the availability or sharing
of system resources. This requires tuning the system kernel. The most configurable
piece of software ... plan for loss of some of the hosts.
EXERCISES 32 7
8. What is meant by the environment of a system?
9. How does one find the boundary between system and environment?
10. What kind of faults can...
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Principles of Network and System Administration 2nd phần 7 doc
Ngày tải lên :
13/08/2014, 22:21
... daneel (128 .39 .89. 230 ) from 128 .39 .74.16 : 9064(9092) bytes
9072 bytes from daneel (128 .39 .89. 230 ): icmp
seq=1 ttl= 63 time=17.1 ms
9072 bytes from daneel (128 .39 .89. 230 ): icmp
seq=2 ttl= 63 time=16.8 ... (128 .39 .89. 230 ): icmp
seq =3 ttl= 63 time=17.9 ms
9072 bytes from daneel (128 .39 .89. 230 ): icmp
seq=4 ttl= 63 time=17.9 ms
daneel ping statistics
4 packets transmitted, 4 received, 0% loss, time 30 30ms
rtt ... welcome piece of software which works supremely well, once
configured.
10 .3. GETTING TRAFFIC TO ITS DESTINATION 39 5
I
1
I
2
I
3
I
4
I
5
I
6
i/
C
1
C
2
C
3
C
4
C
5
C
6
Figure 10.2: Junctions of cables...
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Principles of Network and System Administration 2nd phần 8 pps
Ngày tải lên :
13/08/2014, 22:21
... the case of an accident.
In the unlikely event of every host being destroyed simultaneously, downloading
the software again from the network is the least of your worries!
Reconstructing a system ... 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 session between client and
system. ... differences. Descriptions of backup
schemes are manifold. Regular incremental style backups with site customizations
can be found in refs. [31 0, 158, 169, 241, 148, 234 , 33 5, 218, 257, 2 13] . A forward-
looking...
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Principles of Network and System Administration 2nd phần 9 potx
Ngày tải lên :
13/08/2014, 22:21
... (4.0.1.1 53) 116 ms 116 ms 1 23
13 cambridge1-br1.bbnplanet.net (4.0.1.122) 131 ms 136 ms
14 cambridge1-br1.bbnplanet.net (4.0.1.122) 133 ms 124 ms
15 cambridge1-cr1.bbnplanet.net (206 .34 .78. 23) 138 ... the quality of our resources here.
See gures 13. 2 and 13. 3.
Processes
ã Number of privileged processes: The number of processes running the system
provides an indication of the number of forked ... cambridge2-cr2.bbnplanet.net (192. 233 .149.202) 128 ms
17 ihtfp.mit.edu (192. 233 .33 .3) 129 ms 170 ms 1 43 ms
18 B24-RTR-FDDI.MIT.EDU (18.168.0.6) 129 ms 147 ms 148
19 radole.lcs.mit.edu (18.10.0.1) 149 ms * 130 ms
20 net-chex.ai.mit.edu...
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Principles of Network and System Administration 2nd phần 10 pps
Ngày tải lên :
13/08/2014, 22:21
... D=192.0.2. 238 S=192.0.2.10 LEN=106, ID= 535 07
from -> to TCP D= 23 S=54657 Ack=826419507 Seq=4095044406 Len=66 Win=8760
from -> to TELNET C port=54657
\37 7 \37 2 \30 \0VT100 \37 7 \36 0 \37 7 \37 2#\0from
Transfers ... burned into the network interface.
ã Memory image: A copy of some software in the actual RAM of the system.
Often used to refer to the resident size of a program, or the amount of memory
actually ... C -33 (11):10 23 1029, 1984.
[175] J.O. Kephart. A biologically inspired immune system for computers.
Proceedings of the Fourth International Workshop on the Synthesis and
Simulation of Living Systems...
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principles of network and system administration phần 1 docx
Ngày tải lên :
14/08/2014, 12:20
... 32 4
14.3AuctioningaBandwidthPipeline 32 7
14.4FurtherReading 33 0
Appendix A Lagrangian Methods for Constrained Optimization 33 3
A.1 RegionalandFunctionalConstraints 33 3
A.2 TheLagrangianMethod 33 3
A .3 WhenDoestheMethodWork? 33 5
A.4 ... 30 1
13. 4RegulationinPractice 30 2
13. 4.1 RegulationintheUS 30 2
13. 4.2 CurrentTrends 30 5
13. 5FurtherReading 30 6
14 Auctions 30 9
14.1SingleItemAuctions 31 1
14.1.1 Take-it-or-leave-itPricing 31 1
14.1.2 TypesofAuction 31 2
14.1 .3 ... . . . . . . . . . . . . . . . . 51
3. 3.1 A Technology Summary . . . . . . . . . . . . . . . . . . . . . . . . 51
3. 3.2 OpticalNetworks 53
3 .3. 3 Ethernet 54
3. 3.4 Synchronous Services . . . . ....
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principles of network and system administration phần 2 pot
Ngày tải lên :
14/08/2014, 12:20
... services,themost
common of which are T1 (1.544 Mbps) and the T3 (44. 736 Mbps). In Europe they are
called E1 (2.048 Mbps) and E3 (34 .36 8 Mbps).
3. 3.5 ATM Services
ATM (Asynchronous Transfer Mode) technology networks ... type of
control and we turn to these in Section 3. 2. Sections 3. 3 and 3. 4 describe in detail many
of the actual network technologies in use today, such as Internet and ATM. We relate these
examples ... lost because of
NETWORK CONTROL 47
network switches
source
destination
X
traffic contract
Figure 3. 3 In a connection-oriented network each newly arriving call invokes a number of
network controls....
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