Rahul Khadse
LAN CARD & NIC
NETWORK
INTERFACE CARD
It works
on the 2nd layer of the OSI called Data Link Layer. It has RJ45 port ,which has
pin first two pin are used to send the data & they also used to receive
data .
==========================>
========================== > SENDING
DATA
==========================>
< ========================
RECIVING DATA
< ========================
< =========================
WHAT IS
BROUTER
Router is a combination of router & bridge.
A Brouter is a
network bridge and a router combined in a
single product. A bridge is a device that connects one local area network (LAN)
to another local area network that uses the same protocol (for example, Ethernet
or token ring). If a data unit on one LAN is intended for a destination on an
interconnected LAN, the bridge forwards the data unit to that LAN; otherwise,
it passes it along on the same LAN. A bridge usually offers only one path to a
given interconnected LAN. A router connects a network to one or more other
networks that are usually part of a wide area network (WAN) and may offer a
number of paths out to destinations on those networks. A router therefore needs
to have more information than a bridge about the interconnected networks. It
consults a routing table for this information. Since a given outgoing data unit
or packet from a computer may be intended for an address on the local network,
on an interconnected LAN, or the wide area network, it makes sense to have a
single unit that examines all data units and forwards them appropriately.
Define => CSMA / CD
In one LAN every computer
has risen to sense & transmit carrier over the network . Before sending or receiving
data every computer senses the carrier. If the carrier is free then computer
will transmit the data over the network. If not then it will wait of their
term.
Define => CD ---> Collision Detection
If at a onetime
two computer sends data to each other within same network then data collision
problem may be occur.
Define => CA ----> Collision Avoid
Collision
avoidance methods include prior scheduling of timeslots, carrier detection
schemes, randomized access times, and exponential back off after collision
detection.
HUB ---->
CSMA/CD /
---------------------------------------------------------------
SWITCH ----> /
ROUTER -----> \
BRIDGE ----->
CSMA/CA /
BROUTER ---> \
Posted in: MCITP
