Computing the one-hop transmission delay

• L = Packet Lenght

• R = Transmission Rate

• Transmission Delay

  • T = L/R (sec or msec)

Computing end-to-end delay

• Compute the transmission delay and propagation delay between each link then sum each delay

  • T_1 = L_1/R_1

  • T_2 = L_2/R_2

  • T_3 = L_3/R_3

  • D = T_1+ Dist(L_1)/Prop_speed + T_2 + Dist(L_2)/Prop_speed + T_3 + Dist(L_3)/Prop_speed

End-to-end throughput and bottleneck links

Link layer (and network layer) addressing and forwarding

MCQ

• How many layers does OSI Reference have

• How many layers does TCP/IP have

• IPv4 address size

• MAc address size

• What is the meaning of bandwidth in the network

• A router operates in which layer of TCP/IP reference Model

• A switch operate in which layer of TCP/IP model

• Which layer of the tcp/ip model are host-to-host layers

• Which of the following is correct regarding a MAC address

• The broadcast MAC address is…