What advantages does a packet-switched network have over a circuit-switched network? Consider the network shown in below, where A is a source and G is a destination and R1, R2, R3 and R4 are transmission rates in the network and if the dproc = 4.12s, dqueue =3.05s, and dprop = 5.32s and the length of the packet is 7424 bits, then find the transmission delays of A to D, D to F, F to E, and E to G and end-to-end delay (dend-end). Source B R1 = 14bps R4 = 3bps D R2=Sbps E R3=7bps F G Destination