Question

Question: Why does CSMA/CD require restriction on min frame length? You can use example or diagram to describe the answer.

Answer 1

The minimum frame size on LAN is in order that by the time the start of a frame gets all the approach across a maximum-width network, if a collision is detected there on the way aspect of the network, there is still enough time for the jam signal (collision detection notification) to form it all the approach back across the network whereas the transmitter continues to be transmission, in order that the transmitter can receive the jam signal and are aware of it got collided with therefore it'll have to be compelled to conduct. Anything below sixty four bytes is simply thought of a half-pint (a buggy transmission) and neglected.

Runts don't seem to be collisions and don't trigger retransmissions. But this can be all just about moot as no one runs hubs any longer, since Gigabit LAN needs switches. therefore today's networks area unit continually full duplex and CSMA/CD could be a factor of the past.

For example, in an exceedingly hub network, 2 devices will send packets at a similar time. this may cause a collision.

Explanation:

CSMA/CD require restriction on min frame length because minimum frame size on LAN is in order that by the time the start of a frame gets all the approach across a maximum-width network, if a collision is detected there on the way aspect of the network, there is still enough time for the jam signal (collision detection notification) to form it all the approach back across the network whereas the transmitter continues to be transmission, in order that the transmitter can receive the jam signal and are aware of it got collided with therefore it'll have to be compelled to conduct. Anything below sixty four bytes is simply thought of a half-pint (a buggy transmission) and neglected.

Runts don't seem to be collisions and don't trigger retransmissions. But this can be all just about moot as no one runs hubs any longer, since Gigabit LAN needs switches. therefore today's networks area unit continually full duplex and CSMA/CD could be a factor of the past.

For example, in an exceedingly hub network, 2 devices will send packets at a similar time. this may cause a collision.