Ethernet in Hindi, CCNA in Hindi

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Ethernet
, इस tutorial Ethernet technologies
ऊ Ethernet ए LAN technology Ethernet technology स
suggest OSI model इस ए
CCNA in Hindi : OSI model स
Outline
 Introduction to Ethernet in Hindi
 Cables of Ethernet in Hindi
 network topology of Ethernet in Hindi
Introduction to Ethernet
Ethernet 1970 xerox develop उस स इस 2 स 3 MB
Ethernet standard IEEE 802.3
Ethernet ए LAN technology सस computers स connect
स औ ए Local Area Network स इस technology
information flow control ए protocols
Ethernet technology cables स स computers connect
Ethernet technology coaxial cables अ twisted
pair औ fiber cables
Ethernet technology स LAN ई स स स topology
स Bus, star, ring औ mesh topology

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Ethernet technology cables role इ Ethernet technology
अ अ cables स
Ethernet cables
Ethernet technology 3 cables
Coaxial cable
इस ए स wire insulator, metal shield औ plastic
स Insulator signal control Metal shield wire
electromagnetic interference स signal destroy
औ plastic wire अ स स औ
Coaxial cabling televisions ए
2 coaxial cable -
1. Thick net - इस coaxial cable औ इस shielding
Thick net coaxial cables ए
reliable इस Coaxial cables connect
ए Vampire tap
2. Thin net - इस coaxial cable normal size cables thick
net cables comparison reliable इस coaxial cables
connect ए BNC connector
Twisted pair cable
Ethernet technology स स Twisted pair cables
2 4 copper wires plastic स Copper wire ए

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स cross talk Cross talk उस error ए
wire signal स wire signal disturb
Twisted pair cables 2 -
1. Shielded - Shielded twisted pair cable ए shield cover
electromagnetic interference स
2. Un-shielded - Un-shielded twisted pair cable ई shield औ
shielded twisted pair cable स अ स इ
Twisted pair cable ई categories categories ए इ twist
इस स इ -
 Cat3 - इस category इ 3 twist
 Cat5 - इस category इ 5 twist
 Cat5e - इस इ 5 twist औ pairs स
twist
 Cat6 - इस category इ 6 twist
Fiber optic cable
Coaxial cable औ twisted pair cable electronic signals स
fiber optic cables light स Fiber optic cables
स plastic glass
Fiber optic cables bandwidth स metal cables स इस
स स स अ carry स Fiber optic cables
signal chance Fiber optic cables स cables स
औ

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Ethernet technology 2 fiber optic cables -
1. Single mode fiber - Single mode fiber optic cables ए ए data
ray travel
2. Multi mode fiber - Multi mode fiber optic cables ए multiple data
rays travel स
Ethernet network topology
ए topology physically network स design network
structure design physical औ logical स
network topology 4 Bus, Star, Ring औ Mesh Ethernet 2
topology Bus औ Star इ इ topology
स -
Bus topology
ए bus topology स computers ए wire स connected ई ए
computer topology available स computer स
उस accept computer स MAC address स

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Bus topology स स disadvantage wire
स computers communication ए स ठ Computers स ए
स स separately communication ई
Star topology
Star topology स hosts ए switch hub स औ hosts hubs औ
switch स ए स frames
Hubs intelligent hub स frames hub
frames स hosts औ स host स MAC address match
host उस receive
Switch intelligent devices Switches स hosts address table maintain
इस ए ई host ई frame स स only
उस host स स MAC address

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Star topology स स disadvantage switch hub
स fail
Ethernet frame
Ethernet data link layer technology Data link layer data frames स
ए frame size 64 bytes स 1522 bytes स
Frame fields स size स इ fields
Preamble
इस field size 7 bytes field synchronization purpose ए
Start of frame
इस field size 1 byte field starting point
Destination MAC address
इस field size 6 bytes field destination host MAC address
contain
Source MAC address
इस field size 6 bytes field source host MAC address contain
802. 1Q tag
इस field size 4 bytes field optional tag VLAN
configuration ए
Length

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इस field size 2 bytes field complete स इ
Payload
इस field size 42 bytes स 1500 bytes स actual
CRC (Cyclic redundancy check)
इस field size 4 bytes field frame errors
Inter-frame gap
इस field size 12 bytes field frames time gap
इस tutorial Ethernet technology इस
CCNA in Hindi : Hubs स
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