CSI 345 Homework, Spring 2012

To be delivered Tuesday and Wednesday 10 and 11 April , print and fill in hand written. Fill in the ip addresses where there is IP: 1-Y@idm sends an email to x@sodetel : A- SMTP packet goes from Y@idm PC to SMTP.IDM Source Mac Dest Mac Source IP Dest IP Source Port Dest Port B- Then from SMTP.idm to SMTP.Sodetel : fill in the following: (note that you must organize them by numbering them . SMTP packet Source Mac Dest Mac Source IP Dest IP Source Port Dest Port Arp request Packet Source Mac Dest Mac Who has IP Arp reply Packet Source Mac Dest Mac Who has IP Arp request packet Source Mac Dest Mac Who has IP Arp reply packet Source Mac Dest Mac Who has IP DNS Packet Source Mac Dest Mac Source IP Dest IP Source Port Dest Port DNS reply packet Source Mac Dest Mac Source IP Dest IP Source Port Dest Port Smtp reply packet Source Mac Dest Mac Source IP Dest IP Source Port Dest Port C- The email now arrived at SMTP.sodetel , and them to POP.sodetel , what happens now ? D- Assign an IP , SM , DG and an external DNS for PC5, also a real mac address. E- PC5 sent a request to ftp://5.5.5.5 What will be the second packet coming out of PC5 : 1-an ARP packet 2-a DNS packet 3-an http packet 4-an ftp packet Justify below: F- Yahoo is replying fill in the below FTP reply packet Source Mac Dest Mac Source IP Dest IP Source Port Dest Port G- The ftp reply packet is on R3 now : Source Mac Dest Mac Source IP Dest IP Source Port Dest Port H- How many collision domains exist in the first network (IDM), how many broadcast domains ?