Question $2$

A Gigabit Ethernet uses the CSMA$/$CD protocol and operates at B $=1G\frac{b}{s}$ speed.

The length of the cable bus is $L=500m$ with one repeater in the middle. Assuming

that the velocity of propagation of a signal through the cable is $v=2{10}^8\frac{m}{s}$ and that

the additional one$-$way delay introduced by the repeater is $1\mathrm{.}0s.$

$($i$)$ Find the minimum frame size which is necessary in order to use the CSMA$/$CD

protocol.

$($ii$)$ Assuming that $192$ bits are added for margins, calculate the slot time in the

Ethernet.