Question

Consider the two hosts A and B are connected through a direct link. The bandwidth ofthe link is 10bits/sec, propagation speed is 2x10 m/sec, the distance between A andB is 5000 km. What are the propagation and transmission delays if the file size is 20,000bytes.a) 1600 msec and 2.5 msecb) 1200 msec and 25 msecc) 1200 msec and 2.5 msecd) 1600 msec and 25 msec​

Answer 1

The Bandwidth (B) of the link is 10 bits/sec.

The propagation speed (v)= 2×10 m/sec.

The distance (d)= 5000 km =5× m.

The file size (L)= 20,000 bytes bits.

Now applying the formula of propagation delay as follows-

where d= distance and v=propagation speed

Now applying the formula of transmission delay -

where L= number of bits and B= bandwidth