connection of switch to router is collision domain?

[mahesh18]

Hi all,

i know all port sin switch are separate

collision domain.

bit if switch is connected to another switch or router is that also considered as another collision domain??

many thanks

mahesh

[Jon Marshall · Accepted solution]

Mahesh

Each port is considered it's own collision domain so a port connected to a router is still a collision domain.

Jon

[mahesh18]

Hi jon

Many thanks for your reply

mahesh

[gattina59]

Hi I've seen in question exam cisco that connection switch to switch is not collition domain because the reason is that switch to switch is full duplex. In Internet there is too much confusion on switch to switch connection.

On book ccna there is written so: "In a modern LAN with all switches and routers, even though full duplex removes collisions,
think of each Ethernet link as a separate collision domain when the need to troubleshoot arises."

now my questions are two due to too much confusion. In an exam, what do you think of the two definitions for counting collisions? Which one is true?