Networking Concept Part 1

Repeater

Networking esa Data Communication ds vUnj Data Signal dqN nwjh ds ckn Weak gks tkrs gSaA vr% yEch nwjh rd Data Transmission djus ds fy, ;g vko’;d gks tkrk gSa fd Signal dks dqN nwjh ds ckn etcwr fd;k tk,A vr% Media ds lkFk ,d device add fd;k tkrk gSa tks bu Weak Signal dks amplify djds vkxs Retransmit djrk gSa ml Device dks Repeater dgrs gSaA 

Repeater ,d Physical device gSa tks fdlh Hkh Extended Network esa Media Segment dks Interconnect djrk gSaA

Repeater Weekend data Signal dks Regenerate djrk gSa o mldh Original Strength esa gh mls vkxs transmit djrk gSaA

bldk iz;ksx fdlh Hkh Signal Network fd length dks Extend djus ds fy, fd;k tkrk gSaA

Repeater devided in two Categories

(1)   Amplifiers

(2)   Signal – regenerating devices.

(1) Amplifiers – Amplifier ftl form esa MkVk feyk gSa mls mlh Form esa Amplify djds vkxs transmit dj nsrk gSaA ;g MkVk ds lkFk vk, Noise dispense dks nwj ugha djrkA

(2) Signal Regenerating Repeater:- ;g Repeater Signal dks Receive djus ds lkFk mls fitter Hkh djrk gSa vFkkZr~ MkVk ds lkFk vk, fdlh Hkh izdkj ds Noise dispense dks nwj djrk gSaA vr% destination node ij MkVk viuh vkWjhtuy QkeZ esa izkIr gksrk gSaA Repeater ges'kk OSI Model fd Physical ij odZ djrk gSaA

ROUTER

* Router dk mi;ksx nks Save and different Network Architecture ij vk/kkjhr LAN ds vkil esa Connect djus ds fy, fd;k tkrk gSaA

* Router Source Node ls destination Node rd Packet ds Path dks p;u fd {kerk j[krk gSaA

* Router dk eq[; dk;Z gSa Root decide djukA Root decide djus ds fy, blds vius Protocol gksrs gSa - Root decide djus ds fy, ;g Routing Algoritheem dk mi;ksx djrk gSaA    

* Router Small Path dks lysDV djrk gSa ftlesa Traphic de gks vksj Tire Hkh de yxs bls Routing dgrs gSaA

* Router ,d nwljs Router ls tqM+k gksrk gSa Router vius ls Connect Network ls Packet Receive djrk gSa o destination address ds vk/kkj ij vkxs Transmit dj nsrk gSaA

* Network esa fdlh dEi;wVj dk Path ,d ls vf/kd gSa rks ;g MkVk dks Transmit djus ds fy, Samll Path dk mi;ksx djrk gSaA vr% Router ds ikl izR;sd dEi;wVj ds irs ds lkFk&2 mldh Routing Table gksrh gSaA

* Router viuh Routing Table dks dqN le; ds ckn Exchange djrk jgrk gSaA

* Router Network Address ds Throw Packet dk Root decide djrk gSaA 

BRIDGE

nks Same Network architecture ij vk/kkjhr Lan’s ds chp Communication ds fy, Bridge dk mi;ksx djrs gSaA

-     Bridge ,d Large Network dks Small Segment esa divide dj nsrk gSaA

-     Bridge Local or Remote nksuksa izdkj ds gks ldrs gSaA

-     Local bridge ,d Same Area ds vUnj Multiple Len’s Segments ds chp esa Direct Connection djrk gSaA

-    Remote bridge different Area ds vUnj Multiple Len’s Segment dks conneet djrk gSaA Uses tele Communication line.

-  Nks LEN’s ds e/; fLFkr Bridge nksuks Network ls eSlst dks jhlho djrk gSa mudh destination Kkr dj vko’;drkuqlkj mUgsa nwljs LAN ij Transit dj nsrk gSaA

-  ;fn ,d gh usVodZ fd nks Node esa vkil esa Data Transmit djuk gSa fQj Hkh Packet igys ,d ckj Bridge ds ikl t:j vk,xkA

-  Bridge nks LEN’s ds chp Frames dks Store and Forward fd Technique ij dk;Z djrk gSaA

-   tc dksbZ Packet Bridge ds vUnj Enter gksrk gSa rks ;g lcls igys ml Frames ds vUnj Contain Address dks Read djrk gSa vkSj ;g irk djrk gSa fd o packet fdl usVodZ dh dkSulh uksM ds fy, gSaA

-   Bridge Packet dks jhlho djus o Forward djus ds lkFk&2 Packet dks Filter djus dk dke Hkh djrk gSaA vFkkZr~ ;g Repeater ds leku gh Signal dks Amplify Hkh djrk gSaA