Question

Final Exam CSIT 340 Computer Networks, Fail 2015 wants to know the iP address of amaron.com and sends a query to for the domain name server that the local domain name server will (a) if a local domain STuR what is tsv name contact next? What à the iP address of this domain name sends a query to SRVR name server will contact ir ides 27.oo. 173. s (b) if a loral domain name server wants to know the IP address of es.njit.edu what is the IP address for the domain name senver that the local domain n next? What is the canonical domain name for this domain name server? domain name server? domain name server? What is the alilas for this a Sener net email server application for the montclair edu domain? What is the IP address of the email server? /A2 .2.4.101 lc) Accordins to the information on SRVR, what is the domain name of the email server that runs the 11. (9 points) The following time-line dlagram shows a typical TCP 4-way cient connection teardown process. first segment sent from the client to the server is labeled as "TCP Sgmt 1. The first segment sent from server to the client is labeled as "TCP Sgmt 2" The second segment sent from the server to the client as TCP Sgmt 3. The second segment sent from the client to the server is labeled as "TCP Sgmt 4" Assume that TCP Sgmt 1 has a sequence number of 900, and that TCP Sgmt 3 has a sequence number of 100, as shown in the diagram. Answer the following questions: (a) What TCP flag is set in TCP Sgmt 1? F IN (b) What TCP flag is set in TCP Sgmt 2 c) What TCP flag is set in TCP Sgmt 3? FIN (d) What TCP flag is set in TCP Sgmt 4? el What is the acknowledgement number carried in TCP Sgmt 2? 1oI

Answer 1

11.(a) SYN,ACK flag will be set which is to set to make a connection with the server.

(B).only ACK flag will be set.

(C).FIN flag will be set in order to release a connection along with sequence number.

(D).ACK flag will set because server agreed to release a connection after receiving data.

(E).900 Will be acknowledge number which was send with sequence number while they are making a connection with server.