a) A router has a single queue (buffer) that receives and transmits packets from multiple users to an output link. The link speed is 10 Mbps (10 x 10^6), the average packet arrival rate is 1,200 packets/sec, and the average packet size is 512 bytes. Assuming a basic queuing model, what is the average service rate in packets/sec? What is the traffic intensity?
b) A router uses an IP packet size of 512 bytes and has a link speed of 100 Mbps (100 x 10^6). What is the efficiency for the standard IP packet header size? What is the link goodput?