Node A wants to send a $10$MB file to Node B$.$ The router divides the file into $100$ byte fragments and adds a $60$ byte packet header to each fragment. The router then sends the file to Node B in fragment of $(1000+60)$ byte packets.

a$.$ At what tie does the complete file reach Node B$?$

b$.$ What is the "goodput" from A to B if packets are divided into $1000$ byte payloads with $60$ bye headers?Hint: Goodput cann be calculated as the number of payload bits arriving per second in Mbps$.$