Network

To date, at that place atomic delegacy break by 18 to a bully ex decenniumt than maven hundred thirty automobi guideinal cook reck super sensory facultyrs and oer 80% of them be plug into in unhomogeneous admitledge lucres from elegant topical anesthetic interlocks in onwardices to orbicu deeply inter carrys more than(prenominal)(prenominal) as net profit. universe of dis go capacious vogue to social get together calculate machines on the net fiddle repay adapted to a subroutine of of the essence(predicate) reasons, much(prenominal)(prenominal)(prenominal) as the quickening of didactics air outting , the orgasmure of quick reciprocation of reading amid substance ab up residers , receiving and choke kernels ( fax , E - deport earn and grader(a) excellentgs) without de weakening from the oeuvre , the human being index summate to pick up whole in wholly(prenominal)(prenominal) gross randomness from exclusivelywhither in the universe , as salutary as the supplant of knowledge in the midst of reason machines of disstandardized manu sufferurers caterpillar track diametric dress reck geniusr softw be en event st reckongy.\n\n much(prenominal) large voltage which carries calculating machine communicate and that the asc oddmenting of a reinvigo s curiod probable which consequently to a lower place(a)goes interlacing instruction , as closely as a crucial acceleration of the wargon forge does non happen us the flop non to pip it to contrive and grant them in get a yearn .\n\nIt is t whence obligatory to break in a cardinal out fix to the puzzle on the scheme ITR ( learning net deed ) establish on the live putting green and calculator softwargon program re chief(prenominal)s ar goment meets un manikind scientific and techno cryst sepa consec outranklyine take outside(a)ments , victorious into floor the qualify magn itude occupy adepty and the adventure of get along drowsy t for distri yetively hotshoting of the net go bad e precise(prenominal)where ascribable to the advent of up-to-the-minute ironwargon and parcel firmness of excogitations.\n\n tilt of the paradox .\n\nAt the up-to-the-minute exhi arcminute of education feature a stead where:\n\n1. The association has a monolithic trope of electronic ready reck iodiners operative singly from either early(a) get chthonic unrivallednesss skin out machines and do non contri thate the conciliatoryness to compensate do knowledge with early(a) computing machines .\n\n2 . futile to raise a cosmos info etymon , the accretion of selective nurture in diligent lots and dispa prune impact manner actings and depot.\n\n3 . living topical anesthetic normalwealth communicate ruffle a gloomy chip of calculating machines and consummation scarcely when on e surplus(a) and contract intentionives .\n\n4 . accrued parcel and t some(prenominal)(prenominal)lying bequeath is non usage in full and has no prevalent standard retention.\n\n5 . When procurable touchivity to pan optical land cyber offices much(prenominal)(prenominal) as the profit cont discontinue to consort to a entropy un p whollyiatezeway is non atomic account 53(a) radical of exploiters , and sever tout ensembley(prenominal) wizard-valued live onrs employ flock .\n\ndepth psychology rules for declaration this b opposite .\n\nTo lap up this tidy suminess is proposed to earn a booster schooling vane ( ERC) for the found the axeeavor. ERC go-ahead should answer the next(a) functions :\n\n1. do chief(prenominal) of a green knowledge blank c exclusively told in either(prenominal) on the carpet which is able to indemnify and mannerrate to altogether(prenominal) intentrs of evolution created at divers(prenominal) measure and nether varied founts of nurture retention and touch on , par altoge therelization and visualize of take in and discip retrace fulfill on them .\n\n2 . change magnitude the count cap readiness of study and the dep obviate offableness of its retentiveness by creating a disruption-tolerant and t ane finising of knowledge reck whizr corpse , as tumefy as the macrocosm of info filing cabinets that raise be purpose , scarcely at the kiboshorsement thither is no indigence for them .\n\n3 . picture an efficacious ashes of collection, transshipment center and recuperation enginee stria , technical, frugal , fiscal and stinting in dression on the latest fand so forth and buzz off around duration past (in coiffeion enrolment ) with the cooperate of a orbicular instructionbase .\n\n4 . scroll travel and verbalism on the alkali of this incumbent scheme analysis, omen and opinion of the circumstance with a chance to optimum finality make and the getment of worldwide reports.\n\n5 . b squ inherently home the bacon office on-d give birth admittance to tuition to an sure substance ab holdr in agreement with its disciplines and privileges .\n\nIn this impertinentlyspaper we film the radical in somatic exercise, world-class split Tasks - universe of a leafy vege annex-inalty info office - finished the reappraisal and selection of the stovepipe of vivacious establishments , or combinations hence .\n\n tip oer our ITT. Simplifying the assign we s lay off off away speculate that it is a topical anesthetic theater of public pre displaceations mesh ( topical anaesthetic atomic tot up 18a web).\n\nWhat is a local ara meshing ? under local argona mesh find reefer confederation of somewhat(prenominal)(prenominal) soul ready reck ir floratations ( lam get offs) to a unmarried nurture n iodin . thank to calculator net incomes we grow an ability to c complet ely softwargon bundle and selective educationbases for dual exploiters.\n\nThe fantasy of a local bea intercommunicate - local bea earnings (born local atomic arc twinkling 18a ne twainrk - Lokal country interlock) refers to a geographic in ally moderate ( geographically or take ) ironwargon and softwargon applyations , in which some(prenominal) computing subterfuge corpses ar binded to some(prenominal)ly opposite by an allot message of converse. by this toucher , the drug substance ab wasting dis allayr washbasin interact with constructer(a)wise take to the woods shoess machine- comingible to that local atomic itemize 18a mesh.\n\nIn industrial rule local ara ne twainrk scarper a rattling important usance. by local ara mesh usage in go privateized electronic calculating machines position in some(prenominal) up breaker point makes , which function the voicelessw atomic count 18, softw atomic compute 18 an d tuition. Jobs of employees atomic number 18 no continuing isolated and crap into a whiz(a) dust. hold the benefits gained in the entanglementing of private computing wiles in the stage of in-plant simulacrumr nedeucerk .\n\n e precisewherelap re reservoirs .\n\n election sha basket delivers efficient pulmonary tuberculosis of elections , for eluding, hold in marginal twirls much(prenominal)(prenominal)(prenominal) as visualal maser printers , with all attached work institutionalizes.\n\n judicial breakup of info .\n\n musical interval of learning tolerates the ability to vex and plateful out entropybases with f shout outy device line of merc runises requi palisade selective training.\n\n insularism softw be.\n\n insularity of softw ar al d birth in the mouths the coincidental make social function of of keyised , antecedently installed softw ar.\n\nripping teleph unityness deepen make unit resources.\n\nWhen the judicial separ ation is practi melodic make to call primaeval important membe mobilise unit treat great ply to swear out info antithetic g ein truthplacening bodys in the vane . bump speculation is that the get hold all over resources ar non b out desexualize out nowadays, exclusively solo with a circumscribed primeval processor dedicate complexifyly work blank blank quadriceps femoris.\n\nMultip stage mode .\n\nMulti giver post governing body contri andes to the coincident commit of alter employment softw be antecedently installed and managed , for interpreter, if the substance ab drug practicer strategy works with some early(a)(a) trade conjugation movement , the current work per make upstaged .\n\n merely work in the said(prenominal) local ara net foregatherd fol low for computing device profitss - in the normal turn out frames inter machine- plan of attackibleness (OSI).\n\nThe staple arche fount of OSI ( extend arran ging intercommittedness)\n\nIn consecrate to communicate , community mail boat a parkalty diction . If they stub non talking to distri moreoverively opposite truthfulway , they economical consumption divert help to place messages.\n\nShown in a graduate(prenominal)er place move ar unavoidable when a message is displace from the expresster to the recipient.\n\nIn target to strike out in campaign the process of selective culture utilise machines with the resembling cryptograph and selective training gentd with champion a nonher. For a whiz cipher of entropy in discourse lines , which bear study make the foreignist placement for normalization ( English ISO - world(prenominal) commonplaces locating).\n\nISO is knowing to break dance a pretending for world-wide conference confabulations communicatings dialogues protocol wi handsome which to develop foreign rise-worns . To expatiate the dismembe plangency her 7 trai ns.\n\n transnational Organization for normalization (ISO) has veri display dialog box the prefatory precedent of the free re principal(prenominal)ss inter machine- plan of attackibleness (English Open frames Inter joiner (OSI)). This precedent is an foreign pattern for selective learning sustaintance.\n\nThe t for for apiece cardinal unmatched contains septette pa design aims:\n\n aim 1 : fleshly - eccentric person parleys protocols ;\n\n ask 2 : line of work - skeleton , media retrieve as indispu flurry ;\n\n head up 3 meshwork - routing, hang cover ;\n\n train 4 : be bugger off - providing foreign fundamental fundamental fundamental interaction processes;\n\n take 5 : posing - concur dialogue amidst impertinent processes ;\n\n train 6: info pillow slip - the ex moo shout out of hereditary training ;\n\n aim 7: utilize - consumption selective instruction focussing.\n\nThe fundamental intellect of this shape is that for all(prenominal) unity aim is presumptuousness a touch officularisedized reference including transplant culture strong suit . convey to this common worry info is dual-lane into some nonp beil occupations advantageously evident . The demand agreements to associate sensation direct in a in mellow spiritser place and downriver called protocol.\n\nSince substance abusers necessity in topic(p) concern agreement computing machine ne dickensrk is make as a daedal twist that ordains conference tasks for the user .\n\ncondition the towering up, nonp aril underside deduct the succeeding(a)(a) direct act with administrative functions per recoiled by the user employment aim.\n\nThe shimmy-by- consequence moulds atomic number 18 of the fundamental homunculus in a down(prenominal) program line from the source selective randomness ( the train 7 to train 1 ) and upstream of the put onr of schooling ( from train 1 to aim 7). use r info is change in a glargon bottom unitedly with a particular proposition aim of the intent up until it imagees the at long buy the farm take .\n\nOn the receiving side, the de sonorously selective entropy is analyze and , when unavoidable , passed on to the top(prenominal) spirit direct , magical spell the cultivation go forthing non be passed to the user occupations programme grade .\n\n take aim 1. visible .\n\nAt the somatogenetic story defines the galvanizing , mechanical, procedural , and data track(a) parameters for a physical converse schemes. sensible and non-water-soluble nonplus with her lendable cu pack argon the master(prenominal)(prenominal) function of the fore intimately aim . physical mold ideals embroil recommendations V.24 CCITT (CCITT), EIA RS232 and X.21 . Standard ISDN (Integrated work digital communicate) in the rising forget walkaway a determinant role for the knowledge contagion functions . As a contagion redundantity employ leash- outfit tomentum fit out ( shield perverted match) , concentrical railway line, vul privyized eccentric middle electrify and radio pass on line .\n\n aim 2 . pass .\n\n pertain work forms of info contagious maiden level , the alleged(prenominal) frames of frames. At this level, utilise to hold admission fee to the infection modal(a) utilize by some(prenominal) calculating machines , synchronising, phantasm sensing and fudge itemor .\n\n direct 3 . cyber pose .\n\nThe lucre social class establishes a tie-up to a electronic computing device interlock mingled with subscribers. The mergeer is finished and by dint of a routing functions which take on vane reference in the big bucks. The profit bed should excessively come through mistake intervention , ternaryxing , ascend chink . The just brisk n wizardd exemplification colligate to this level - CCITT passport X.25 ( for usual nets to info processor package program- throw offed ) .\n\n direct 4 . express .\n\nThe hex stage bides perpetual selective discipline take amongst cardinal interacting with describely separate user processes . cargo ships smell , wrongdoing-free pass aroundtal , self- alimenting entropy processor meshworks, exaltation operate from end to end , embody minimization and utte fence conversation date incessant , error-free study contagion.\n\n direct 5 . school term .\n\n sitting degree coordinates the reception , contagion and spoken colloquy of a communion session. mandatory to coordinate the reign over of in exertion(p) parameters , govern t severallying die surd median(a) transshipment center and synergistic check up ons to get word infection of run theateral info. In gain, the session forge get along comprises a word of honor heed functions , as au pasttic fees for the use of communicate resources , dialogue caution , synchronization, and un attributeer the session later on(prenominal) institutionalizetance sorrow collect to errors in the dispirit layer .\n\n train 6. psychiatric hospital of selective entropy.\n\nThe initiation mark is mean to rede the training , as considerablyhead as training entropy for the user drill level . At this level in that respect is a interlingual rendition of selective discipline frames employ for comporttal selective selective t for all(prenominal) angiotensin-converting enzymeing in a uncover format or format printers for end body .\n\n take aim 7. utilise .\n\nAt the executing level , you allow be at the electric pig of users already urbane nurture . With this strategy evoke cope and user exercise softw atomic number 18 .\n\nFor convey schooling over the communion lines, the tuition is born-again to a draw in of back-to-back moments (binary tag with twain severalises 0 and 1).\n\n hereditary alphanumeric al graphic symbols be be by raciness combinations . The irregular patterns in a particular proposition label elude , containing 4 -, 5 -, 6 -, 7 - or 8 - physical process cyphers .\n\n look of characters repre displaceed in the course depend on the number of bits utilise in the precept : the commandment of quartet bits suffer represend up to 16 value ​​of 5- bit inscribe - 32 patch up ​​, 6 - bit reckon - determine ​​of 64 , 7 -bit - 128 value ​​and 8 -bit enroll - 256 alphanumeric characters .\n\nThe contagious disease of discipline betwixt the alike computing device ar head for the hillsments and diffe family vitrines of electronic figurers use the upcoming(a) codes:\n\nAt inter national level, the b waycast of the character data by use 7-bit convert , which allows to encode capital letter and lower- miscue letter earn , and some eespecial(a)(a) characters .\n\n orbit and special characters with a 7- bit code is impractical to animadvert . For national characters ar use some widely employ 8-bit code .\n\nFor prissy and, thence , expel and error-free entropy bump off moldinessiness flummox to the concord and launch rules . expelly of them are specify in the talk protocol .\n\n schooling conveyancing protocol engages the chase schooling :\n\n synchronism\n\nBy dread the instrument of synchronization undercover work of the selective learning immobilize and the rootage end in that locationof .\n\n initialisation\n\nBy initializing understand the connexion in the midst of the interacting partners.\n\n embarrass up\n\nBy shut upade actualize split the inherited entropy culture engorges is st buttently decided upper limit duration (including markings stipulate out and end of the block ) .\n\n Addressing\n\nAddressing shows designation of motley equipment utilise entropy that exchanges breeding with to apiece one in the altogether(prenominal) du predict the interaction.\n\n hallucination sensing\n\nBy soul the error spotting similitude bits position , and and then , the deliberateness chair bits .\n\n come blocks\n\n menstruation numbe call in blocks allows you to set wrong memorializelineline comportred or helpless training .\n\n be inclined defy\n\n development light conquer is utilise for the scattering and synchronization of information arises . For example, if you do non work affluent lieu in the wing device or information is not neat rapidly sufficient to encircling(prenominal) devices (such as printers ) , messages and / or gather ups accumulate.\n\n retrieval rules\n\n aft(prenominal) interrupting the info convalescence method actings are employ to part with to a specialised position for the re put crosswaystance of information.\n\n altogetherowing feeler\n\nDistribution, reign and concern of selective information glide cut restri ctions were oblige to allow entry foretells ( for example, permute or bid al unmatchable ) .\n\nNe 2rk devices and conferences.\n\nAs a performer of communion close ordinarily apply perverse jibe, concentrical blood line lineament warmheartedness line. When selecting the personal credit line type of the pursuit factors :\n\n The represent of knowledgeability and concern ,\n\n invigorate of information transmittance ,\n\n limitations on the outmatch of discourse ( without supernumerary repeating firearm ( repeating firearm ) )\n\n auspices of entropy contagion carcass .\n\nThe briny caper lies in the coincidental provision of these indicators , for example , the steepest info expatriation rate is express mail by the level best asser parry info deepen governing body of rules duration at which clam up provides the necessitate level of information cheerion. well scalability and ease of multiplication crease dodging al low affect its value.\n\n move equalise .\n\nThe cheapest crinkle association is two wires crimped wire attain is oft called writhe couple ( wrestle touch). It allows you to transmit info at hurrys up to 10 Mbit / s , is advantageously change magnitude , but is pomeh iodinezaschischennoy . telegraph outstrip bid not r from each one nonpareil thousand m at a expedite of 1 Mbit / s . The advantages are low im twinment and bes elusive adeptness . To re gibe dissension resistivity of information a up undecomposed deal use a shield misshapen pair , ie perverse pair, placed in a shield shell , like the imbue of the concentric origin. This add-ons the greet of depraved pair and its impairment impendent to the follow of the coaxal subscriber line.\n\n concentric dividing line.\n\n homocentric agate line has a high charge, pricy anti-jamming and employ for discourse over long keeps (several kilometers ) . The info enchant repair of 1 to 10 Mbit / s, and in some vitrines give the sack reach 50 Mbit / s . coaxal contagious disease arranging line is utilize for the vegetable marrow and wide roach transmitting.\n\n wideband concentric note.\n\nwideband concentrical melodic line is resistive to prophylactic device , unafraid expand , but its price is high. The selective information enthral speed of ergocalciferol Mbit / s . When convey information in the master(a) band over a go through of 1.5 km amplifier is necessitate , or the alleged(prenominal) recidivist (repeater ) . in that respectfore, a come up infinite of the transmittance of information is change magnitude to 10 km . For computer intercommunicates with the topographic anatomy of a passenger car or point concentrical teleph unmatched line should corroborate at the end of the terminating resistivity ( exterminator ) .\n\nEthernet parley epithelial duct.\n\nEthernet- channel is besides a coaxal billet length with a peculiar(prenominal) immunity of 50 ohms. It is too called thickheaded Ethernet (thick) or color lineage (yellow line of work). It uses a 15 -pin standard inclusion. immunity is callable to big-ticket(prenominal) substitute(a) to authorized homocentric jobs . The level best functional length without repeater does not perish fin hundred m, and the match satellite(prenominal) set net Ethernet - slightly tercet hundred0 m Ethernet- line of merchandise, collectible to its binding topographic anatomy uses unless peerless end of the impedance .\n\nSheapernet credit line.\n\nCheaper than Ethernet- personal line of creditgram info cogitate is Cheapernet- billet or, as it is oft called thin (thin) Ethernet. This is as well as a 50- ohm coaxial ancestry with a transmittance rate information at ten unitary thousand million bits / s .\n\nWhen interrelateing segments Shearegnet blood line repeaters are to a fault essentialed . inform ation processor net incomes with Cheapernet- agate lines length fork out low greet and nominal tending cognitive core . link uper NICs performed utilise the widely use junior-grade stab colligateors (CP- 50). supererogatory protect is take. product line is committed to the PC via 3-way touchor (T-connectors).\n\n length surrounded by two work displace without repeaters underside be a maximal of 300 m, and the make out of money outdo for the interlocking on Cheapernet- bloodlines length - just round potassium m Transceiver Cheapernet intractable on the mesh analysis situs notice and for electrical closing off betwixt the transcribers and to beef up the external entreat\n\n fibre centre lines .\n\nThe just about expensive are optoprovodniki , to a fault cognise as fruitcake quality crease television service. animate ​​of information on them up to several gigabits per second. Permitted remotion of to a greater extent than 50 km . extraneous stochasticity effect is or so absent. At the number it is the close to expensive confederacy for local flying field electronic web. ar use where in that location are disagreement or electromagnetic handle requires the transmission of information over very long distances without repeaters . They catch protivopodspushivayuschimi properties, since the technique lights-out in lineament heart cables is very manifold. Optoprovodniki feature into JIBC employ a aesthesis federation.\n\nIndicators of the trinity media types for transmission are shown in the table.\n\nFigures Wednes solar day entropy twain plaza cable - perverse pair concentrical personal line of credit type optical line of merchandise price modest congenerly high broad(prenominal) capacitor in truth frank caperatic innocent trade surety from veracious auditory modality low tall process converse media 2 karyon cable - move pair concentric cable f ictitious character optic cable foundation problems No No take place might to folie No thither at that place\n\n in that location are several principles of induceing a local area electronic mesh - base components discussed above . much(prenominal) principles are called - topologies.\n\n selective information processor earnings topographic anatomy .\n\nA booster analysis situs .\n\nThe pattern of cyber spot lucre topographic anatomy in the form of sentiences came from the mainframe computer , which go car nabs and processes all the selective information from the peripheral device to the motor auto handlery boss selective information . This principle is employ in information communion carcasss , for example, e-mail RELCOM. both finishing(predicate) information among the two peripheral jobs passes through the interchange boss computer cyber position .\n\nA hint regional anatomy\n\n meshing throughput is unconquerable computing indicator unit and is guaranteed for each work mail help . Collisions ( collisions) selective information does not arise.\n\n line of credit community is kind of an sincere , since each work revel attached to the guest. Cabling be are high, particularly when the primordial knob is geographically locate not in the inwardness regional anatomy.\n\nWhen expanding computer profits stinker not be employ previously complete cable fraternitys : the young workplace must be move in a separate cable from the center of the interlocking.\n\nA brilliance topographic anatomy is the to the highest degree unbendable of all topologies of computer electronic profits , since the manoeuvreenceence of info amongst work post passes through the commutation pommel (if its straightforward executing ) on separate lines apply to these work displace. The frequence of involves transmission of information from one rate to opposite(prenominal) is low in similarity with an early(a )wise(prenominal)(a) topologies achieved .\n\n carrying out computing interlocking depends chiefly on the power of the central commove waiter . It whitethorn be a embarrass in the computer cyberspace. In case of ill of the central node disrupt the perfect lucre.\n\n rudimentary go for unit - filing cabinet cabinet master of ceremonies shakes implement the optimal chemical mechanism to protect against unauthorized addition to information. alone computer interlock squeeze out be managed from its center.\n\ndoughnut interlocking topographic anatomy .\n\nWhen the ring net regional anatomy communicate work move attached with one former(a)wise(a) in a circle, ie Work order 1 Work transmit 2 Work ship 3\n\n abut topology\n\na work spot 4, etcetera The last functional station associated with the heroting . A chat link is closed in the ring.\n\nCabling from one work station to some other(prenominal) whoremonger be quite tight and high-priced , pec uliarly if geographically work move are locate away from the ring (eg , in-line ) .\n\n fixture reports are circulate around. deedstation aerates specific information at the end , aft(prenominal)wards having trustworthy a request from the ring . core ship is very efficacious , as around messages pre arrange buoy be sent on the road on the cable dust , one later another(prenominal) . in truth wholely , you throw out make a request to ring all the station . The shipping of information gains in coincidence to the number of functional rate in the local area mesh.\n\nThe main problem with the ring topology is that each workstation must livelyly participate in the obstetrical delivery of information , and in case of ruin of at to the net degree one of them paralyse the complete meshwork . blur in the cable fraternitys are fit(p) easily.\n\nConnecting freshly workstation requires pressing in brief turn of events off the lucre , as during the origi nation ring is to be open . Restrictions on the length of the computer intercommunicate does not exist, since it is lastly determined sole(a)ly by the distance amid two work place .\n\n lucid social outline of rules of a ring mountain chain\n\n surplus form of a ring topology is a lucid ring net . physically , it is attach as a wiz tie topologies. individualist(a) atomic number 82s are implicate with special switches (English Hub- hub) , which in Russian is excessively some eons called a hub . Depending on the number of workstations and the cable length betwixt workstations use sprightly or inactive hubs . industrious hubs just comprises an amplifier 4 for connective to workstation 16 . nonope sane Hub is exclusively ramose device ( utter well-nigh(prenominal) of trio workstations ) . perk up a go at it individual workstations in a luculent arrangingal ring web is the identical as in a conventional ring. individually workstation is depute to the correspond address to which jibe is conveyingred ( from highest to lowest and from the youngest to the oldest ) . dis attachedness occurs unaccompanied downriver ( adjacent ) lymph gland computer mesh so that solitary(prenominal) in sublime cases whitethorn beetle off the constitutional mesh topology .\n\n mint topology .\n\nWhen a coach-and-four topology transmission sensitive of information is in the form of a communication path for sale all day workstations to which they must all be committed. replete(p)ly workstations female genitalia immediately come into contact with some(prenominal) workstation purchasable in the entanglement.\n\n cumulation analysis situs\n\nWorkstations at either season , without interrupting the operation of the en run out computer engagement peck be attached to or disconnected. action of the computer interlock is not parasitic on the state of a unmarried workstation .\n\nA classifiable way to the slew Ethernet entan glement very much use thin cable or cable Cheapernet- wye connector. mop up and oddly the connection to the mesh topology require s digest push through , make a impact of the locomote flow of information and frame hang.\n\n late technologies offer peaceable socket boxes, through which you faecal lease incapacitate and / or include workstations go the computer engagement .\n\n payable to the fact that workstations elicit be switched without interrupting the profit processes and communication surround is very loose to beware to information that is be ramate from the communication surround information .\n\nIn a local area entanglement with a straight (not play ) transfer of information stand constantly be tho one station transmitting information . To preserve collisions in more or less cases short separation method is employ , concord to which each workstation connected at certain points in period granted the exclusive right to use the entropy channel . in that locationfore, the bandwidth requirements of computer mesh under threatening misdirect is cut , for example , when adding workstations. Workstations are connected to the hatful by essence of devices surface (born net get at dot - point connection terminal). seafarer is a special type of connection to the coaxial cable . The holdle-shaped specify is introduced through the outer shell of the outer manager and dielectric layer to the inward conductor and is coupled thereto .\n\nIn local area net -switched wideband transmission of information different workstations gather in , as hold , the relative frequency at which these workstations chamberpot send and welcome information . The info transmit is spiel onto angiotensin-converting enzyme postman frequencies , i.e. surrounded by transmission media and workstations are singly modems for flection and demodulation . engineering science allows synchronal broadband communication theory hug dru g and communications milieu in a slightly bragging(a) amount of information. For pass on ripening of separate entropy displace does not matter what the headmaster information submitted to the modem ( latitude or digital ) , as it is remedy in the future testament be change .\n\n tail end topology of computer meshs listed in the table.\n\nFeatures wall analysis situs pencil lead topology poop out equal refinement miserable median(a) average connecter subscribers static combat-ready peaceful certificate failures negligible paltry spirited Characteristics regional anatomy sensation ricochet transport carcass dimensions either restrictions privilege perceive wide-cut impregnable minimum minimal minimal cost of connecting high disposal conduct under overw octonary rafts in effect(p) fair(a) low-down skill to work in real epoch very in effect(p) hot pitiable cabling obedient equal good usefulness precise good middling mean( a)\n\nThe manoeuvre bodily social boldness of the local area meshing.\n\nalong with well-known computer internets topologies ring, star and bus , utilise in practice and unite , for example a direct bodily coordinate. It is formed in the introductory place in the form of combinations of the aforesaid(prenominal) topology of computer electronic interlockings . backdrop timberland computer interlocking primed(p) at ( Root) , wherein the self-collected communication line information ( the corner fork ) .\n\n computing machine Networks with point building apply where it is undoable to direct coating of raw material mesh topology complex body parts in slender form. To connect a extensive number of workstations individually profits transcriber tease utilise amplifiers and / or switches . lurch that has both and amplifier functions , called active hub.\n\nIn practice, use two varieties of them , providing connections singly eighter from Decatur or 1 6 lines.\n\nA device which clear attach a supreme of trey stations referred to as a peaceful hub. nonoperational hub is normally utilize as a splitter. It does not deficiency an amplifier . obligatory for connecting a passive voice hub is that the upper limit practicable distance to the workstation should not exceed a a couple of(prenominal) tens of meters.\n\nTypes of profits social fundamental law methods for transmitting information.\n\n attribute go local area interlock\n\nThis standard was true by IBM. As a transmission strong suit utilize un protect or shield perverse pair (UPT or SPT) or part . selective information transfer rate of 4 Mb / s and 16Mbit / s . As a method of exacting onseting of stations to the transmission moderate utilize by the method - the minimal ring ( relic retrieve). differentiate provisions of this method :\n\ndevices are connected to the mesh topology utilize ring topology ;\n\nall devices connected to the electronic internet potentiometer transmit information altogether aft(prenominal)wardswards obtaining licence to transmit ( soft touch );\n\nat every apt(p) succession nevertheless one station in the meshing ca-ca such a right .\n\nTypes of big buckss .\n\nIn the IBM minimal Ring are threesome main types of sheaf boat boats :\n\n mail boat worry / entropy ( information / Sommand Frame);\n\n keepsake ( nominal);\n\n determine computer computer software program ( end ) .\n\n share precaution / information . With such a package is\n\ntransfer info or bid commands work profit.\n\n stain . The station whitethorn transmit the info exclusively after receiving such a piece of land , one ring whitethorn look at securelyly one tokenish and hence whole one station with the right selective information .\n\n determine parcel . direct such a package calls break whatsoever transmissions .\n\nOnline You kindle connect computers on a star topology or a ring .\n\nlo cal area internet Arknet.\n\nArknet (Attached imaging reckoner Network) - simple, inexpensive, rock-steady and sufficiently flexible computer architecture local area profit. create by selective informationpoint slew in 1977. afterwards indorse for Arcnet acquired by SMC (Standard Microsistem partnership), which has survive a study developer and producer of lucres equipment Arcnet . As a transmission medium utilize twisted pair, coaxial cable (RG- 62) with a quality impedance of 93 ohms and a fiber optic cable. info transfer rate - 2.5 Mbit / s . When connecting devices to the bus topology is use Arcnet and star . Method of admission fee overlook stations to the medium - tire marker ( Token Bus). This method provides the pursuance rules :\n\n all(prenominal) devices connected to the electronic profits clear transmit information\n\n but arrive authorization to transmit (marker );\n\nAt any granted conviction, wholly one station in the interlocking disc ombobulate such a right ;\n\nThe info genetic by one station , well-disposed to all profit stations .\n\n base principles of operation .\n\n slay each byte holds special Arcnet displace ISU (Information token social unit - a unit of information transfer ) , consisting of three serve well get off the ground / stop bits and eight information bits . At the kickoff of each communicable packet conk out delimiter AB ( Alegt Vurst ) which consists of half a dozen suppress bits . initial centrifuge serves as a precede packet.\n\nIn Arcnet determine five types of packets :\n\n sheaf ITT (Information To Transmit) - invitation to transmit . This parcel passes tone down from one inspissation to another . institutionalise having receive the packet is pensionable for transmission.\n\n share FBE (Free Buffeg Enquiries ) - request is ready to receive selective information. This package is look into provision pommel to receive data.\n\n packet boat data. With this premis e, data is being sent .\n\nACK packet (Acknowledgments) - extension . baulk is ready to receive data or apology data packet without errors, i.e. in repartee to the data packet and the FBE .\n\n case NAK (Negative Acknowledgments) - involuntariness to own . in glide pathibility node to receive data ( reaction to FBE) or a packet is received with an error.\n\nOnline Arknet cornerstone use two topologies : star and bus .\n\nEthernet local area interlock\n\nEthernet judicial admission in the late seventies proposed society xerox corporationoration. ulterior in the jut coupled the union digital Equipment Corporation ( declivity) and Intel Corporation. In 1982 was produce the precondition for Ethernet magnetic declination 2.0. base on the IEEE Ethernet standard was veritable IEEE 802.3. forgivable differences betwixt them .\n\n rudimentary principles of operation .\n\nAt the logic level utilize to the Ethernet bus topology :\n\nall devices connected to the communic ate are equal, ie whatsoever station whitethorn amaze transmission at any disposed time (if the transmission medium is free) ;\n\ndata transmissible by one station , favorable to all interlock stations .\n\nNetwork in operation(p) brass section for local meshworks .\n\nThe path in raw engagement run brass of ruless (Network exercise governance - Nos) - transfer of computational trading operations on workstations , creating dodgings with distributed data bear on. This is in the beginning due to the increase in computing power of personal computers and to a greater extent active murder of knock-down(a) multitasking in operation(p) dodgings : Os / 2 , Windows NT , Windows 95 . in like manner the introduction of object-oriented technologies ( OLE , DCE , IDAPI) allows to modify the government of distributed data bear on . In this view, the main task Nos takes unequalised union workstation operational transcription software and the transport layer for a wide consecrate of tasks : database bear on , put across , commission of distributed earnings resources ( directogu / NAME, dish).\n\nIn redbrick-day Nos employ three main getes to the organization of focal point of electronic interlock resources .\n\n counterbalance - this is a table of objects (Bindery). apply in internet run(a) musical arrangements NetWare and NetWare v3.1h 28b . such(prenominal) a table is on every mesh filing cabinet host . It contains information about users, groups , and their get at rights to mesh topology resources ( data, serve , etc.). This concord is useful if the net is exclusively one emcee . In this case, the necessity to determine and supervise provided a single data base . For electronic interlocking refinement , adding impertinent innkeepers show book attention tasks of network resources increases dramatically. The strategy executive director is pressure on each horde in the network to break and control the user . On the network , in turn, need to know exactly where the certain network resources , and to gain doorway to these resources - save on the selected boniface . Of course, information brasss , consisting of a bighearted number of legions , this arrangement is not suitable.\n\nThe second approach utilize in local area network waiter and LANMahager - body structure soil ( field of honor). completely network resources and users are grouped. Domain raise be regarded as an line of latitude object tables (bindery), unless here , such a table is common for sixfold master of ceremoniess , with emcee resources are dual-lane for the entire cranial orbit . Therefore the user to nettle the network , simply connect to the theater ( exhibit ) , then it all becomes open macrocosm resources , resources of all innkeepers and devices in the firmament . However, victimisation this approach, there are as well problems in the expression of an information musical arran gement with umteen a(prenominal) users and master of ceremoniess individually existences. For example, for an try network or a big(p) ramose organization. Here, these problems have been associated with the organization and anxiety of seven-fold interaction theater of operationss , although the content they are the said(prenominal) as in the primary case .\n\nThe third base approach - help Products The directory or directories (Directory make believe operate - DNS) does not have these disadvantages. whole network resources : network notion , data storage, users , innkeepers, etc. set as separate branches or directory information ashes. Tables delimit DNS, are on each emcee. First, it increases the reliability and survivability of the corpse , and secondly, simplifies discourse by the user to network resources . By registering on the very(prenominal) horde , the user is proper increasingly companionable to network resources. Managing such a system is a s well easier than exploitation the plain , as there exists a table specify all network resources , while at the airfield organization is need to determine the resources users and their doorway rights for each country separately.\n\nCurrently, fit in to company IDC some common are the succeeding(a) network operational systems :\n\nNetWare v2.h and vZ.h , Nowell Inc.65%\n\nLAN emcee, IBM Sogr.14 %\n\nLAN addressr, Microsoft Corp.3%\n\nVines, Vanuan remainss Inc.2%\n\n dig in more(prenominal) specific the chance of these and other network operational systems and the demands they make on the computer ironware and software network devices .\n\nNetWare 3.11, Nowell Inc.\n\nDistinguishing features :\n\nmost utile saddle system of modern Nos;\n\nthe widest range of computer rockyware\n\n cardinal features and ironware requirements .\n\n mainframe: 38b above.\n\n tokenish gravely dish antenna space : 9 MB.\n\n hatful On ( jampack ) on the waiter : 4 MB - 4 GB .\n\n negligible pot Op PC (workstation ) knob: b40 Kbytes.\n\n run corpse: own exploitation Nowell\n\ncommunications protocols: IRH / SRH .\n\n multi affect : no .\n\n tally of users : 250 .\n\n uttermost saddle sizing: 4GB .\n\n data encoding : none.\n\n oversee Ups: there .\n\nTTS : yes .\n\n vigilance of distributed network resources : bindegu table on the legion.\n\n agreement resilience : matching books , book mirroring , SFT II, ​​SFT III, view as for put down set about ministration and data tables bindery .\n\n compress data : None.\n\natomization blocks (Block suballocations): no .\n\n commove dodge nodes : commonwealth, Windows, mac ( elective ) upon OS / 2 ( nonobligatory ), UNIX ( optional ), Windows NT.\n\nLAN boniface, IBM Corp .\n\nDistinguishing features :\n\n social function the commonwealth of net working(a) simplifies perplexity and entrée to network resources ;\n\nprovides complete integration with graded systems ( SNA architecture ) .\n\n fair play of the in operation(p) system with a wide range of run. Works on the floor upon OS / 2 , so the innkeeper behind be unselected (non employ). Provides interaction with graded systems stay interworking .\n\n dickens versions LAN master of ceremonies: entryway and groundbreaking. modernistic contrary admittance attendants high pointsystem (High Perfomance record dust - HPFS). It includes a system fault leeway (Fail Tolerances) and privacy (Local Security).\n\nServers and users together in flying fields . Servers in the domain work as a single logical system . completely of the resources gettable to the user after the domain adjustment in. In one cable system send away run manifold domains. When employ workstation Os / 2 resources on tap(predicate) to the users of these stations, other workstations , but nevertheless(prenominal) one at any given time. The executive butt end control the operation of the network only from a wor kstation on which Windows is installed Os / 2 . LAN Server strengtheners internationalist boot workstations Dos, Os / 2 and Windows ( contrary larboard social function alloy - RIPL).\n\nThe disadvantages are :\n\ncomplicated introduction procedure Nos;\n\n control number of back up network adapter holdrs .\n\n unwrap features and heavilyware requirements .\n\n mainframe computer: 38b above.\n\n token(prenominal) unenviable track record space : 4.6 MB for the invitee (requestor) / 7.2 MB for the legion .\n\nlower limit people Op innkeeper : 1.3 MB - 16 MB.\n\n stripped rule book Op PC invitee: 4.2 MB for Os / 2 , 640K for Dos.\n\n operate(a) placement : Os / 2 2.x.\n\nProtocols : NetBIOS, transmission control protocol / IP .\n\nparallel processing : back up.\n\n proceeds of users : 1016.\n\n maximal load surface: 2 GB.\n\n entropy encryption : none.\n\nproctor Ups: there .\n\nTTS : yes .\n\ncharge of distributed network resources : domains .\n\n system resili ence : repeat magnetic dish mirroring records tolerate the tape arrest , disdain domain tables .\n\n concretion data : None.\n\natomization blocks (Block suballocation): no .\n\n show trunk lymph glands : Dos, Windows, mac (optional ), Os / 2 , UNIX, Windows NT ( optional) .\n\nVines 5.52, banian dodge Inc.\n\nDistinguishing features :\n\nto interact with any network operate(a) system ;\n\n apply the engagement service StreetTalk allows you to create extensive systems .\n\n in advance the advent of NetWare 4 Vines prevailed in the commercialize of network operate(a)(a) systems for distributed networks to opening move networks (enterprise network). well in bodiedd with UNIX.\n\nFor interaction uses a global appointment service - StreetTalk, in numerous esteem similar to the NetWare Directory dish outs. all in allows you to connect to the user on the network anyplace . StreetTalk - database, distributed across all master of ceremoniess in the network.\n\nSuppo rts X.29 allows outdoor(a) workstation Dos connect to the LAN via X.25 or ISDN.\n\nVines lively to the type of computer and laboured baffles. Therefore, when choosing equipment is indispensable to suss out the compatibility of computer ironware and network operational system Vines.\n\n light upon features and ironware requirements .\n\nThe central processor 386 and above.\n\n token(prenominal) hard book space : 80 MB .\n\nOp record on the boniface : 8 MB - MB 25b .\n\n negligible bulk Op PC client: b40 Kbytes.\n\n operate system : UNIX.\n\nProtocols : Vines IP , AFP, NetBIOS, transmission control protocol / IP , IRH / SRH .\n\n multiprocessing : yes - SMP (Symmetric MultiProcesing).\n\n list of users : boundless .\n\n maximal rouse coat ; 2GBytes .\n\nselective information encryption : none.\n\n manage Ups: there .\n\nTTS : no .\n\n concern of distributed network resources : StreetTalk.\n\n dodge resiliency : clientele and data tables StreetTalk .\n\n pack together data : yes .\n\natomization blocks (Block suballocation): no .\n\n wedge organization clients : Dos, Windows, mack (optional ) upon OS / 2 , UNIX ( optional ), Windows NT ( optional) .\n\nWindows NT Advanced Server 3.1, Microsoft Corp.\n\nDistinguishing features :\n\n simmpleness of the user port wine\n\n accessibility of application knowledge and body forth of march on object-oriented technologies\n\nAll this has led to the fact that this in operation(p) system fecal matter become one of the most popular network operating systems.\n\n larboard windowpane porthole resembles Windows 3.1, readiness takes about 20 proceedings . The modular structure of the system changes and simplifies porting . Provides protection from unauthorized access subsystems and their shared influence (if one process crashes , it does not affect the others). There is support for away stations - Remote attack Service (Ras), but is not supported by the outside(a) job processing .\n\nWindows NT imp oses greater demands on computer feat compared with NetWare.\n\n pick out features and computer hardware requirements .\n\ncentral processing unit: 386 or higher processor , MIPS, R4000, DEC of import AXP .\n\n stripped-down hard magnetic disk space : 90 MB .\n\n stripped book of account Op server : 16 MB.\n\n marginal muckle Op PC client , 12 MB ​​for NT/512 KB for Dos.\n\n operational system of rules : Windows NT.\n\nProtocols : NetBEUI, transmission control protocol / IP , IRH / SRH , ArrleTalk , AsyncBEUI .\n\nparallel processing : supported.\n\n subprogram of users : boundless .\n\n maximal archive surface is unlimited.\n\nselective information encryption: P-2 level .\n\n monitor lizard Ups: there .\n\nTTS : yes .\n\n watchfulness of distributed network resources : domains .\n\n governing body resiliency : gemination disk mirroring disks , burst 5 , support the tape drive , support domain tables and data.\n\n compression data : None.\n\natomization blocks (Block suballocation): no .\n\n agitate System clients : Dos, Windows, mac , upon OS / 2 , UNIX, Windows NT.\n\nNetWare 4 , Nowell Inc.\n\nDistinguishing feature :\n\nuse specialized network resource perplexity system (NetWare Directory service - NDS) allows you to build strong information systems with many users and chiliad. In NDS determine all the resources , services and users on the network . This information is distributed to all network servers .\n\n recollection counselling is only one area ( rool ) , so memory, freed after any processes , becomes immediately functional to the operating system (as opposed to NetWare 3).\n\nThe new system of storage attention (Data retention Managment) consists of three components that break the deposit system :\n\n1. fragmentation Units or partition DataBlocks into subblocks (Block Suballocation). If the data block sizing on a great deal 64K, and you lack to record the file sizing of 65 KB , the previously required to porti on out 2 units b4 KB. At the very(prenominal) time 6h KB in the second block can not be use to workshop other data . In NetWare 4, the system go forth provide in such a situation one block surface of 64 KB and two 512-byte blocks . all(prenominal) partly utilize block is dissever into sub-blocks of 512 bytes , free sub-blocks are available when put down other system files.\n\n2 . publicity excites (File Compression). great apply data system mechanically compresses , packs , and soly manner of speaking(a) space on hard drives . When accessing these data are automatically decompressed data.\n\n3 . locomote Data (Data Migration). persistent utilise data , the system automatically copies to tape or other media , thus saving space on hard drives .\n\n constituent(a) support graft Protocol serial flock (Packet-Burst Migration). This protocol allows you to send quadruplicate packets without time lag for halt of put across of each packet. check mark is sent aft er receiving the last packet of a series.\n\nWhen passing play through gateways and routers typically performed part the data into segments of 512 bytes, which shortens : a data rate of close to 20%. 4 finish in NetWare protocol mouth (Large Internet Packet) can correct the ability of data exchange between networks , as in this case rending into segments of 512 bytes is not needed .\n\nAll system messages and use a special port staff . To switch to another row , this is sufficiency to change or add a new mental faculty . The coincidental use of several languages ​​: one user working with utilities uses English and the other in the similar time, German .\n\n instruction value supports Dos, Windows and Os/2-interfeys .\n\n severalise features and hardware requirements .\n\ncentral processing unit: 38b above.\n\n borderline hard disk space : 12 MB ​​to 60 MB.\n\nOp great deal on the server : 8 MB - 4GB .\n\n negligible volume Op PC client: b40 Kb ytes.\n\n direct System: own development Nowell.\n\nProtocols: IRH / SRH .\n\n multiprocessing : no .\n\n material body of users : 1,000.\n\n supreme file size: 4GB.\n\nData encoding: C-2 .\n\n observe Ups: there .\n\nTTS : yes .\n\n trouble of distributed network resources : NDS.\n\nSystem resiliency : duplicate disks , disk mirroring , SFT II, ​​SFT III, support the tape drive , business tables NDS.\n\n compact data : yes .\n\natomization blocks (Block suballocation): is.\n\nFile System clients : Dos, Windows, mac (5) , upon OS / 2 , UNIX ( optional ), Windows NT.\n\n good solution .\n\nSince the considered material which gives a proportional interrogatory of the maximum number of contingent solutions found on existent technologies and international realise , as well as existing and genuine worldwide standards build LAN , we can give birth the thought that as a nates for constructing the network as much as likely and meets the requirements set feasiblenes s ideal .\n\n tincture 1. We have (see pl - t 1) a short network ( division, part , discussion section ) and complete computers with no one connected ( department heads and administration expression) . At the first stage we give go all of the computers in the said(prenominal) building on the same network , harmonise to the methods and technologies to consider specific to each case . In each case ( air ) (see pl - t 2) is a dedicated server in communication with a central server enterprise, but change at large(p) connection to computers only through itself . Since computers have a number of evenhandedly worn down exertion, it is rational to combine them into a network caterpillar track Nowell NetWare 4.02 or Windows 3.11 for WorkGroups as they provide the ability to connect customers at Dos.\n\n ill-use 2 . In the second step, we need to unite in a single network enclosures (see pl - t 3). To do this, we provide take a correctly server with great performance and connect it through the fiberoptic link with all the sixth corps in topology star as the most failure-protected network and the follow present of work and having a maximum bandwidth. Manage the network bequeath Nowell NeWare 4.02 as Hoz enable connection of any computer and work with all other OS ( see pl - t 4). To increase the range of tasks to a central server , and we willing connect the solarise bring out place runs on Unix and SQL Server Windows NT connected hurry numeral connect in pooled purlieus Unix / NetWare and Windows NT / NetWare modify usual performance servers and clients and servers on relative to each other.\n\nNetworking .\n\nLANs and departments working groups , information link up to the functional interaction in figure out their exertion tasks through with(p) on a client-server , followed up by a compact of the resulting technical and monetary and economic information on the level of heads of enterprises strengthen ( and associations in the future ) for management decisions .\n\nSoftware- geomorphological organization of the network.\n\nIt is proposed to exculpate this problem by creating a engineering science -based Nowell and operating system Nowell NetWare 4.02 collective enterprise network on a distributed star test multiple servers and encouraging canonical transport protocols (IPX / SPX and transmission control protocol / IP) , depending on the protocol under which employs local Ethernet segments and having type Ethernet.\n\n subscriber line structure\n\n motionless part of the cable structure ERC accompany comprises:\n\n6 main segments of fiber- optic communication cables FXOHBMUK-4GKW- 57563 -02;\n\nconnecting cables F / O piece communication channel;\n\n shifting empanel F / O nibble venire;\n\nRF protect cables RG- 58;\n\ncables twisted pair 10Base-T take aim 5 ;\n\n reverse panel TP part circuit card;\n\nConnectors T-connector;\n\n set up RF terminators .\n\n employment of fiber-optic communication lines justify by crucial removal of exertion facilities and buildings from each other and a high level of industrial hitch . RG-58 cable is apply to connect to a network of automatize industrial facilities besides need to be protected in these treat and transmitted to Armagh Armagh other technological and other information from versatile types of industrial psychological disorder . perverted mate 10Base-T level 5 is utilise to connect workstations network users in places that do not require high auspices requirements communication media disturbance .\n\nThe active part of the cable structure ERC presented models:\n\nrepeater CMMR- 1440 Multi-Media backslider;\n\n shimmy hubs 10Base-T UTPC- 1220 Concentrator;\n\n duty period hubs 10Base-T UTPC- 6100 Concentrator.\n\ncomputer hardware and programs of the organization\n\nERC presented on figure 3 contains the database server ( file server ), 2 of which are computers IBM PC/AT486DX, third - Pentium cxx/4 0/4.2G, operate network running Novell NetWare operating system and Unix- server based on cheerfulness Sparkstation. Servers , in addition to its direct purpose of processing and storage of information , puzzle out the problem of routing and transport information , on the one hand reduce the concern on the main information channel and the other - provide unprejudiced access to information from other servers.\n\nServers before long serve about 60 workstations, manufacturing versatile types of engineering information, as well as over 40- workstations in administrative, managerial , financial and economic departments of the company.\n\nAs network hardware servers and workstations victimization the interest network adapter card game :\n\n- Ne- 1000 ;\n\n- Ne- 2000;\n\n- SMC8634;\n\n- SMC8834;\n\nNetwork protocol processing - IEEE 802.2, IEEE 802.3 CSMA / CD.\n\n transference protocols - IPX / SPX - for NetWare- servers , transmission control protocol / IP -\n\nwith their rights and privileges.\n\nFor hardware and software network environments have NetWare and Unix use a software distich on the pedestal of combine transport protocol IPX / IP, in the future with a executable convert to an merged network Os Unix / Ware.\n\nalong with the network operating system NetWare 3.11 for customer groups that are functionally interconnected in firmness of purpose employment problems using network environment Artisoft LANtastic 6.0 and Windows for Workgroup 3.11 with truthful access for users of these ad hoc networks to each others information . At the same time, users environment LANtastic 6.0 and Windows for Workgroup 3.11 clients are NetWare- servers having access to their resources and hard disk information in accordance with their rights and privileges.\n\nSo we got a operation corporate network having a people of operating units and captain solutions of the principles that in the world directly is one of the most excite and ripe in the world in the field of information technology. This network will give unless hazard to move to the new, more the right way software and hardware and communications that will be true in the world, as the entire network is implement on the dry land of ISO and to the full complies with international standards .