Consider a CSMA/CD network that transmits data at a rate

Home » Computer Networks » Computer networks miscellaneous » Question

Consider a CSMA/CD network that transmits data at a rate of 100 Mbps (10⁸ bits per second) over a 1 km (kilometer) cable with no repeaters. If the minimum frame size required for this network is 1250 bytes, what is the signal speed (km/ sec) in the cable?

1. 8000
2. 10000
3. 16000
4. 20000

Correct Option: D

Given L = 1250 Bytes , B = 100 mbps
d = 1km , V = ?

In CSMA / CD, L = 2 ×	d	× B
	v

⇒ V =	2dB	=	2 × 10³ × 10⁸	⇒ V = 20,000 km / sec
	L		10⁴