Curs 3 2013/2014rf-opto.etc. 2014-01-14¢  nr nume grupa subiect rezultat % [38] 1 bejenari dacian 5101

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  • Curs 3 2013/2014

  • Capacitate de informare =

    Nota Tema

     curs 6, prezenta obligatorie, 25% din nota

    -

    Test 1 referinţă

    C2

    Test 2 verificare

    C6

    Interesare subiect ? Nota 

  • Nr Nume Grupa Subiect Rezultat % [38]

    1 BEJENARI DACIAN 5101 2 12 32

    2 BOICU PAUL 5101 1 17 45

    3 LUNGU NARCIS IUSTIN 5101 37 13 34

    4 PINZARIU MARINA 5101 4 20 53

    5 SERBAN IULIAN MIHAI 5101 13 19 50

    6 SEVERIN IONUT 5101 3 16 42

    7 TEACU ALEXANDRU 5101 12 17 45

    8 CIOBANU CEZAR ADRIAN 5102 28 13 34

    9 MIHALIUC SERGIU 5102 32 15 39

    10 NITA CATALIN 5102 25 16 42

    11 PANAITE STEFAN 5102 38 16 42

    12 PRICOP PAUL 5102 26 9 24

    13 VALEANU IOANA 5102 27 10 26

    14 BURAGA ALEXANDRU 5103 31 10 26

    15 CARCALETE ADRIAN 5103 35 7 18

    16 CIOBANU STEFAN 5103 21 11 29

    17 COZMANIUC ALEX 5103 36 9 24

    18 DIACONITA TIBERIU CONSTANTIN 5103 17 6 16

    19 DOBREA ANDREEA DANIELA 5103 20 20 53

    20 FEDELES LAURA 5103 15 16 42

    21 ICHIM NICOLETA ANDREEA 5103 34 17 45

    22 IGNEA MIHAI 5103 29 8 21

    23 TODEREANU ALEXANDRU IOAN 5103 30 20 53

    Valoare medie

    13.9 36.5

  • http://rf-opto.etti.tuiasi.ro Pagina in limba romana ≠ Pagina in limba engleza

  •  Intel® Itanium® processors (codenamed Tukwila)

     2 miliarde tranzistoare pe CPU

     >3 miliarde operatii pe secunda

     Nivel redus de complexitate al operatiilor elementare

  •  Open Systems Interconnection  Structura stratificata pe 7 nivele

  •  IP – Internet Protocol  HTTP – Hyper Text Transfer Protocol  FTP – File Transfer Protocol  TCP – Transport Control Protocol  SMTP – Simple Mail Transfer Protocol  POP3 – Post Office Protocol  IMAP – Internet Message Access Protocol  Telnet – Telecommunication network

    (remote login)

  •  LAN – Local Area Network  acopera distante

    maxim de ordinul km

     WAN – Wide Area Network  poate acoperi

    intreaga lume  Internetul e cea

    mai mare WAN

  •  LAN – Local Area Network  WAN – Wide Area Network  HAN – Home Area Network  MAN – Metropolitan Area Network  CAN – Campus Area Network  SAN – Storage Area Network  Enterprise Private Network  VPN – Virtual Private Network

  •  Stea: toate nodurile sunt conectate la un nod central numit hub (switching hub)

    Hub

    C1

    C2

    C3I1

    S1

    “Hub”/”Switch”

    “Ruter”

  •  Bus – toate nodurile sunt conectate la un singur cablu

     obligatoriu trebuie sa apara terminatoare la capat

    C1 C2 C3 C4 I1 S1

  •  Inel – toate nodurile sunt conectate la un singur cablu care realizeaza un inel

     teminatoarele nu sunt necesare

    C1

    C2

    C3

    C4

    I1

    S1

  •  Topologiile de retea

     toate topologiile sunt utilizate in retele WAN

     topologia STEA predomina in retele LAN

  •  Cablu

     Coaxial: 185 m, 10 Mb/s

     UTP – Unshielded twisted pair: 100 m,

    ▪ Cat 5 100 Mb/s (5e – 1000Mb/s)

    ▪ Cat 6 1000 Mb/s (6e – 10000Mb/s)

     STP – Shielded twisted pair: distanta mai mare

     fibra optica

  •  Conectori

     BNC – Bayonet Neill Concelman

     RJ45 – UTP

     RJ22 – Telefonie (RJ11)

     FDDI – Fibra optica

  •  Cablu Ethernet

     Conectare calculator – switch, calculator modem

     Ethernet Crossover

     Conectare directa intre 2 calculatoare

  •  NIC –Network Interface Card – placa de retea  10Mb/s, 100Mb/s , 1000Mb/s  Ethernet  RJ45

     Modem  56 kb/s  RJ22  Inlocuit de Cable Modem  Aplicatii Fax!

     Viteze de acces  garantat  best effort

    ▪ tipic, pentru aplicatii v[B/s] ~ v[b/s] / 10

  •  Cablu

     Wireless

     Fibra optica

  •  Wi-Fi - 2.4 GHz  802.11a,b,g,n  b – 11Mb/s, 32m

     g – 55 Mb/s, 32 m

     n – 300Mb/s, 64m  securitate  WEP, WPA, WPA2

     MIMO  Multiple Input Multipple Output

     Gain – la antena arata directivitatea

  •  GSM

     3G/3G+ 3.6 Mb/s

     EDGE 220 kb/s

     GPRS 60~80 kb/s (20 kb/s /slot)

  •  Web  E-mail  Forum  FTP  Chat  Instant messaging  RSS feeds  Internet Time  P2P

  • Browser, HTML

  •  to browse = a rasfoi  Mosaic – primul browser grafic –

    1.0 – XI.1993  Netscape  1.0 – 1994

     4.5,4.79 – X.1998, XI.2001

     7-9 … Mozilla Firefox  Internet Explorer  1.0 – 1995

     Curent: 9.0, (9.0-1, 8.0-2)

  •  Opera  2.1 – XII.1996  Curent: 12.0, (11.5-1, 11.0-2)  Opera mini: 7.0 (6.5-1, 5-2)  Opera Mobile 12.0 (11.5-1, 10-2)

     Firefox Mozilla  1.0 – XI.2004  Curent: 16.0, (8.0-1, 3.6-2)

     Google Chrome  Curent 22.0, (15.0-1, 8.0-2)

     Safari  Apple -

  • Statistici

  • Internet Explorer 7, 26.3

    0%

    Internet Explorer 6, 22.3

    0%

    Chrome, 3.10%

    Firefox , 42.60 %

    Mozilla, 0.50%

    Safari, 2.70%

    Opera, 2.00%

    Other, 5.20%

    Utilizatori avansati

  • Internet Explorer , 72.22%

    Firefox , 19.48%

    Safari , 6.39%

    Opera , 0.71%

    Netscape , 0.68%

    Chrome , 0.26%

    Mozilla , 0.09%

    Opera Mini , 0.05% Playstation , 0.04% Konqueror , 0.02%

    Other, 1.85%

    Total utilizatori

  • IE8, 12.80%

    IE7, 14.10%

    IE6, 10.60%

    Firefox, 47.50%

    Chrome, 8.00%

    Safari, 3.80%

    Opera, 2.30%

    Other, 14.10%

    Utilizatori avansati

  • Total utilizatori

    Internet Explorer , 64.51%

    Firefox , 24.15%

    Safari , 4.44%

    Chrome , 3.60% Opera , 2.18%

    Netscape , 0.33%

    Mozilla , 0.11%

    Other, 2.62%

  • Utilizatori avansati

    Internet Explorer , 16.40%

    Firefox , 32.20%

    Safari , 4.20%

    Chrome , 44.10%

    Opera , 2.10%

    Netscape , 0.68%

    Others, 1.00%

  • Total utilizatori

    Internet Explorer , 54.13%

    Firefox , 19.99% Safari , 5.21%

    Chrome , 18.55%

    Opera , 1.63%

    Prop/Und., 0.26%

    Mozilla, 0.04%

  • Source Chrome Internet Explorer

    Firefox Safari Opera Other

    StatCounter 33.59% 32.85% 22.85% 7.39% 1.63% 1.69%

    NetApplications 19.13% 53.60% 20.05% 5.10% 1.58% 0.54%

    W3Counter 28.30% 27.60% 22.80% 14.40% 2.20% 4.70%

    Wikimedia 34.02% 28.94% 23.51% 6.39% 3.76% 3.38%

    Clicky 29.84% 36.35% 22.64% 9.78% 1.23% 0.14%

  • Afisare

  •  Motoare de cautare  2009 (International)

    ▪ Google (89.8%)

    ▪ Yahoo (5.15%)

    ▪ Bing (3.27%)

     2011 (International) ▪ Google (91.1%)

    ▪ Bing (3.63%)

    ▪ Yahoo (3.56%)

     2012 ▪ similar

  •  SEO

     Search Engine Optimization

    Roboti Baza de

    date ServerClient

  •  AND  SI logic  Cuv_1 AND Cuv_2  + Cuv_1 +Cuv_2

     OR  SAU logic  Cuv_1 OR Cuv_2

     NOT  NEGARE logica  Cuv_1 AND NOT Cuv_2  + Cuv_1 -Cuv_2

  •  NEAR

     apropiere in pagina

     Cuv_1 NEAR Cuv_2

     Fraza

     “Cuv_1 Cuv_2 …. Cuv_n”

     Operator implicit AND

     Cuv_1 Cuv_2 = Cuv_1 AND Cuv_2

     Cautare avansata

     Interfata web pentru introducerea acestor parametri

     Se pot introduce si alte optiuni

  •  Folositi termeni/expresii univoci  film thin film technology

     Incercati sa gasiti un termen care sa fie propriu numai informatiei cautate

     Do not feel lucky!!! (lucky = lazy)  Nu cautati in limba romana  utilizati limba engleza sau chineza

     E mai importanta identificarea unui site utilizabil decat a informatiei punctuale cautate

  •  Estimati identitatea reala a celui care posteaza  Estimati competenta celui care posteaza  Estimati credibilitatea celui care posteaza  Verificati informatia dobandita

     Cross-check

     Gasiti informatie cu acelasi sens la alte surse identificabile, credibile, competente

     Dupa identificarea unei surse valide, cautati in acel loc si alte informatii valide din domeniul de interes

  •  Evaluarea cat mai corecta a identitatii reale a furnizorului de informatie  Oricine poate posta public orice informatie  Oricine isi poate aroga orice identitate

    ▪ In anumite locuri (? free)  Posibilitati de verificare  Nume de domeniu

    ▪ ETTI Iasi -> etti.tuiasi.ro

     Adrese de email ▪ ….@etti.tuiasi.ro

     Verificarea apartenentei prin accesarea domeniului “parinte