Pocitacove siete Flashcards

1
Q

Co su PS

A

je to spojenie 2 alebo viacerych pocitacov prostrednictvom kablov tak, aby boli schopne vzajomnej komunikacie

  • umoznueje zdielanie dat (databazy, subory, programy)- v jednom programe moze sucasne pracovat viacero uzivatelov
  • umoznuju zdielanie a efektivne vyuzitie drahych zariadeni (tlaciaren, plotter,..)- v sieti je jedno zariadenie, ktore mozu vsetci vyuzivat
  • v dnesnych sietach su pridelovane pristupove prava k jednotlivym adresarom a suborom
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2
Q

Topologia sieti

A
  • zbernica(bus)
  • hviezda(star)
  • kruh(ring)
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3
Q

Zbernica

A
  • vyhody:- mala cena kabelaze
    - jednoducha konstrukcia
  • nevyhody:-mala stabilita ( prerusenie kabla kdekolvek v sieti sposobi nefunkcnost)
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4
Q

Hviezdicove zapojenie

A
  • kazda stanica je pripojena k uzlu- rozbocovacu (hub,switcher)
  • vyhody: - vysoka stabilita
    - jednoducha montaz
  • nevyhody:- vysoka cena ( za rozbocovac a vacsie mnozstvo kablov
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5
Q

Kruhove zapojenie

A
  • kabel prechadza od jednej stanice k druhej a cela siet je uzavreta do kruhu
  • vyhody: - nizka cena
    - jednoducha montaz
  • nevyhody: - mala stabilita
    - nutnost zakoncit siet v mieste zaciatku
  • velmi malo pouzivane
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6
Q

Rozdelenie podla velkosti

A

.

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7
Q

Siet LAN

A
  • umiestnena v budove alebo vo viacerych budovach vzdialenych asi 100 m od seba
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8
Q

Siet MAN

A
  • spojenie medzi uzlami na stredne velke vzdialenosti napr. v meste
  • obvykle tvorena spojenim niekolkych sieti LAN
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9
Q

Siet WAN

A
  • spojenie medi uzlami na velke vzdialenosti (medzi mestami, statmi, svetadielmi)
  • tvorena spojenim niekolkych sieti LAN
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10
Q

Koncepcia sieti

A

.

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11
Q

Peer-to-peer

A
  • obvykle neobsahuju ziadny server
  • zapojenie pocitacov formou “kazdeho s kazdym”
  • z kazdeho pocitaca je mozne nahliadnut na disk ineho
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12
Q

Klient/server

A
  • v sieti je pocitac, ktory koriguje chod siete- server
  • server obsahuje stanice-klientov, ktori vyuzivaju jeho sluzby
  • na serveri je naistalovany sietovy opeacny system
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13
Q

HW

A

= sietova karta

  • umoznuje pripojenie k sieti
  • dnes obvykle integrovana priamo v zakladnej doske
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14
Q

SW

A

= sietovy operacny system
- na kazdej stanici musi byt OS (alebo program) porporujuci pracu v sieti
- specialny OS na serveri: - disponuje funkciami pre administraciu uzivatelov a pridelovanie pristupnych prav k suborom a priecinkom
- musi obhospodarovat zdielane prostriedky ( diskove polia, tlaciarne)
- dnes sa pouzivaju 2 sietove OS: Windows server od Microsoftu
linuxove serveri

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