Question

X --- R1 ---- R2 ---- Y

x-r1 link 1 km, tx rate 100 Mbps
r1-r2 link 1000 km, tx rate 10 Mbps
r2-y link 1 km, tx rate 10 Mbps pkt
len 8000 bits, speed prop = c = 3e8 m/s
1- What is dtrans for link #2?

Answer 1

The transmission delay (dtrans) for link #2 is 0.8 ms.

Step-by-step explanation:

The question is asking for the transmission delay (dtrans) for the link #2. Transmission delay is the time it takes to transmit a packet from one end of the link to the other. It can be calculated using the formula dtrans = pktlen / tx rate, where pktlen is the packet length in bits and tx rate is the transmission rate in bits per second. In this case, the pktlen is 8000 bits and the tx rate for link #2 is 10 Mbps. Plugging these values into the formula, we have dtrans = 8000 bits / 10 Mbps = 0.8 ms.