信息通信网络概论课件：Chapter2-作业

1、A example of an internet _Ethernet and Ethernet,Question A: If the PC knows the notebooks MAC address and the interface As MAC address of the router. The PC wants to send an IP packet to the notebook. Please put the layer2 and layer3 address field, of the packets sent by the PC, into the table 2.,Qu

2、estion B: If the notebook knows the PCs MAC address and the interface As MAC address of the router. The notebook wants to send an IP packet to the server. Please put the layer2 and layer3 address field, of the packets sent by the notebook and router into the table 3.,PROBLEMS - 1,TCP/IP Encapsulatio

3、n P92: 19 Suppose an application layer entity wants to send an L-byte message to its peer process, using an existing TCP connection. The TCP segment consists of the message plus 20 bytes of header. The segment is encapsulated into an IP packet that has an additional 20 bytes of header. The IP packet

4、 in turn goes inside an Ethernet frame that has 18 bytes of header and trailer. What percentage of the transmitted bits in the physical layer corresponds to message information if L=100 bytes ? 500 bytes ? 1000 bytes ?,PROBLEMS - 2,P92: 20 Suppose that the TCP entity receives a 1.5 megabyte file fro

5、m the application layer and that the IP layer is willing to carry blocks of maximum size 1500 bytes. Calculate the amount of overhead incurred from segmenting the file into packet-sized units.,A PROBLEMS - 3,An internet _Ethernet and Ethernet,Question : If the server replies a packet sent by the PC , fill tabl