collision & broadcast domain main difference in easy words?

Question

collision & broadcast domain main difference in easy words?

Answer 1

Broadcast area: Broadcast area is a limited section wherein information would properly be transmitted for all instruments interior the area to acquire. extra particularly, Ethernet LANs are broadcast domain names. Any instruments related to the LAN can transmit frames to the different gadget because of fact the medium is a shared transmission equipment. Frames are frequently addressed to a particular trip spot gadget on the community. at the same time as all instruments come upon the physique transmission on the community, basically the gadget to which the physique is addressed extremely gets it. a particular broadcast handle which includes all 1s is used to deliver frames to all instruments on the community. •A repeater is a gadget that joins 2 LANs to enhance the area of the LAN. All community site visitors is sent around the repeater unaltered. •A bridge is a gadget that joins 2 LANs right into a single broadcast area, yet isolates them so as that problems on one LAN do no longer propagate to the different LAN. besides, bridges defend separate collision domain names, so as that computers on each and every section basically cope with different computers on an identical section for get entry to. Collision area: Ethernet networks use a collision-sensing protocol called CSMA/CD (service sense distinctive get entry to/collision detection). The protocol facilitates distinctive instruments related to a shared community cable to apply that cable with the help of taking turns having access to it. the uncomplicated attitude is going like this: a million.a working laptop or computing gadget listens on the cable to be certain if yet another computing gadget is transmitting, that's indicated with the help of a voltage exchange on the cable. If busy, the computing gadget waits and listens. 2.whilst the cable isn't busy, a working laptop or computing gadget tries to transmit. 3.yet another computing gadget would attempt to transmit on an identical time, which motives a collision. 4.the two computers that tried to transmit would desire to returned off, wait, and then attempt to transmit returned. computers on the community come upon collisions with the help of searching for abnormally changing voltages. indicators from distinctive structures overlap and deform one yet another. Overlapping indicators will push the voltage above the allowable decrease. it is detected with the help of related computers, which reject the corrupted frames (called runts).

Answer 2

Collision Domains





- layer 1 of the OSI model





- a hub is an entire collision domain since it forwards every bit it receives from one interface on every other interfaces





- a bridge is a two interfaces device that creates 2 collision domains, since it forwards the traffic it receives from one interface only to the interface where the destination layer 2 device (based on his mac address) is connected to. A bridge is considered as an "intelligent hub" since it reads the destination mac address in order to forward the traffic only to the interface where it is connected





- a switch is a multi-interface hub, every interface on a switch is a collision domain. A 24 interfaces switch creates 24 collision domains (assuming every interface is connected to something, VLAN don't have any importance here since VLANs are a layer 2 concept, not layer 1 like collision domains , if the 24 port switch has only 20 ports to be up, then it has only 20 collision domain )





Broadcast Domains





- layer 2 of the OSI model





- a switch creates an entire broadcast domain (provided that there's only one VLAN) since broadcasts are a layer 2 concept (mac address related) , A vlan itself is a broadcast domain, suppose there are two vlans in the swith then there are 2 broadcast domain.





- routers don't forward layer 2 broadcasts, hence they separate broadcast domains

Answer 3

A collision domain consists of all the network interfaces that can cause a transmission collision. Collisions occur when multiple devices share the transmission medium. The medium is just what the signal moves through (wire, fiber optic cable, radio wave, etc). Some examples would be wired connections that use a Hub or wireless connections (WiFi) using the same channel. In those environments the medium (the network bus in the case of the Hub or the radio frequency channel in WiFi) is shared by all members of the network and only one device can transmit at a time. If more than one device communicates on the medium at a time, then a collision may occur, in which case the signal may be corrupted or cancelled out.



A broadcast domain consists of all network interfaces that can receive a network broadcast. Broadcast traffic goes to all devices on a network, as opposed to unicast traffic which is traffic between two devices on a network. Routers create broadcast domains.