Jun 25, 2015

Computer Network - Lesson 02

http://www.aluth.com/2015/06/computer-network-lesson-02.html
mß.Kl cd,lrKh 2 mdvu

wms Tn fj; f.k wd m<uq mdvug ,enqK fyd| m%;spdr fya;=fjka l,a fkdoudu Tkak wo fojk mdvu;a Tn fj; f.k wdjd¡



uq,skau n,uq Network Card lshkafk fudkjo lsh,d¡ 

lsishï ld¾hhla mß.Klh wOdrfhka isÿlr.ekSug kï tu  ld¾hhg wod, úoHq;a mßm:hla mß.Klhg iïnkaO l, hq;=h' cd,.; lsÍu i|yd fhdod.kq ,nk WmlrKh Network Card tlls' fujeks Card tlla Expansion Slot u.ska mß.Klhg iúlsÍug mq¿jk' bka wk;=rej tu mß.Klh mß.Kl cd,hg iúl, yelsh'cd,fhys we;s udOHfha iajNdjh wkqj tys Socket tl ;=ka wdlrhlg f;dar.; yelsh'
  1. BNC connector
  2. DIX(AUI) connector
  3. RJ-45 connector

  • BNC connector
Thin Ethernet keue;s /yeka j¾.h u.ska mß.Klh cd,hg iïnkaO lsÍu ioyd fhdo.kakd iïnkaOlh BNC iïnkaOlh f,i yÿkajhs' fuh rEmjdyskS j, we;s antenna iúlrkq ,nk ia:dkhg iudk jk wdlrfhka oelsh yels w;r coaxial /yeka u.ska iïnkaO fõ' fufia ilia lrk ,o cd,hla mß.Kl 30 lg iSudfõ' Wmßu È. 180cm muK fõ' fuu /yeka u.ska b;d ,dNodhs f,i cd, f.dv ke.sh yel'



flan,a tl we;=,; iïnkaO jk wdldrh¡
 
  • DIX (AUI) connector
Thick Ethernet keue;s l%uh u.ska cd,.; lsÍu ioyd fuh Ndú;d fõ' fï ioyd úfYaIs; jQ jhrla fhdod .efka'
  
fuys Male iy Female f,i j¾. folls bosßhg l+re we;s connector tl Male o isÿre iys; tl Female o fõ¡

fkÜj¾la ldâ tflys ueoska
DIX (AUI) connector
tl oelafjk wdldrh¡


  • RJ-45 connector
Twisted Pair keue;s /yeka j¾.h Ndú;d lr mß.Kl cd, iE§u ioyd fuu Socket tl Ndú;d lrhs' fï WmlrK u.ska cd,.; lsÍfu§ w;r ueÈ Wmdx. ^Repeater-Hub& fhdod .kS' Netwok Card j,ska meñfKk ish¿u /yeka w;r ueÈ Wmdx.hg iújk w;r th m%Odk mß.Klhg iïnkaO fõ'
fuys Wmßu È. 100m la muKfõ' ÈhqKq mß.Kl cd, ks¾udKh ioyd fuh Ndú;d fõ'



fuu flan,fha mska j,ska meñfKk o;a;hka¡



mß.Kl cd, j¾.SlrKh
 
mß.Kl cd, j¾.SlrKh lsÍfïÈ tajdfha NQf.da,Sh ‍jHdma;sh wkqj wdldr 3lg j¾. lr olajhs'
  1. LAN  - Local Area Network
  2. MAN - Metropolitan Area Network
  3. WAN - Wide Area Network

1. LAN

l=vd m%foaY tkï f.dvke.s,a,l" fN!;sl jfYfhka úYd, fkdjq ia:dkhl jHdma; ù we;s mß.Kl cd,hla LAN tlla f,i yeÈkafõ' fuys§ cd, Wmdx. f,i Network Card , Modem, ÿrl:k /yeka " coaxial cable, twisted pair /yeka yd Fiber optic /yeka Ndú;d lrhs' LAN cd, lsysmhla tlska tlg iïnkaO lsÍu ioyd úfYaI Wmdx. fhdod .kS' m%isoaO LAN j¾.hla f,i Ethernet keue;s l%uh oelaúh yel' fuu l%uh j¾. 3lska oelaúh yel'
  • Thin Ethernet
  • Thick Ethernet
  • Twisted Pair Ethernet


2. MAN
 
úYd, kd.ßl m%foaYhl úisÍ .sh wdh;khl úúO YdLd cd,.; lsÍu isÿjqjfyd;a tjeks cd, MAN tlla f,i y÷kajhs' fujeks cd, ioyd úYd, mß.Kl m%udKhla we;s w;r fndfyda iïm;a m%udKhlao wvx.= lr we;' cx.u ÿrl:k mjdo fuhg iïnkaO lr we;' f.dvke.s,s w;r ksoyia udoHh Tiafia fuu j¾.fha cd, úysfok w;r iïfma%Ik udOHh f,i ÿrl:k /yeka" Fiber Optic uOHhka j,g wu;rj Micro waves fhdod .kS'




3. WAN
 

WAN tlla hkq b;d úYd, mß.Kl cd,hls' fujeks cd,hla úYd, m%foaYhla rgla fyda f,dalh mqrd úys§ mj;S' idudkH udOH yereKq fldg Microwaves yd pkao%sld ;dlaIKh fuu l%ufhaÈ oelsh yel' WAN tlla ;=, LAN yd MAN j¾.fha cd, úYd, m%udKhla wvx.= úh yel' wka;¾cd,h fï ioyd fyd|u WodyrKhls' 



fuys ;=kafjks mdvu fu;kska msúi n,kak¡
fuu mdvï ud,dj Tnfj; f.k tkafka R.D. pkaosu úisks


 
Top