Question 2 (20 points): (10 points) Show the layered protocol architecture (i.e., how you would represent them using OSI layers) of both the Voice over IP (VOIP) phone and the router. Note the following: Assume the VoIP phone is a regular host, just like a desktop computer. Make sure to show the peer interfaces between router and VoIP phone. VoIP Phone Internet Router (10 points) Assume the information is a 20-byte audio sample Application Layer) generated by the audio codec located at the VoIP phone. It is carried by a Real-Time Transport Protocol (RTP) packet (RTP is implemented at an intermediate layer, between Application Layer and Transport Layer - you may consider it as Session Layer). How does the Layer 2 frame look like at the router's E0 interface? Please draw the frame showing all the sizes. Assume the following protocol headers are used: RTP header = 12 bytes UDP header = 8 bytes IP header = 20 bytes Question 2 (20 points): (10 points) Show the layered protocol architecture (i.e., how you would represent them using OSI layers) of both the Voice over IP (VOIP) phone and the router. Note the following: Assume the VoIP phone is a regular host, just like a desktop computer. Make sure to show the peer interfaces between router and VoIP phone. VoIP Phone Internet Router (10 points) Assume the information is a 20-byte audio sample Application Layer) generated by the audio codec located at the VoIP phone. It is carried by a Real-Time Transport Protocol (RTP) packet (RTP is implemented at an intermediate layer, between Application Layer and Transport Layer - you may consider it as Session Layer). How does the Layer 2 frame look like at the router's E0 interface? Please draw the frame showing all the sizes. Assume the following protocol headers are used: RTP header = 12 bytes UDP header = 8 bytes IP header = 20 bytes