In 1000BASE-X, a frame of 64 bytes is first block coded with 8B/10B before transmitting. Suppose the propagation speed is 2 × 10 8 . What is the frame “length” in “meters”? (Suppose the cable is 500 m...

In 1000BASE-X, a frame of 64 bytes is first block coded with 8B/10B before transmitting. Suppose the propagation speed is 2 × 10⁸. What is the frame “length” in “meters”? (Suppose the cable is 500 m long.)

What is the probability of two stations taking five more trials to resolve collisions after they have the first collision? (Suppose only two stations are in the collision domain.)