CS-69 TCP/IP Programming July – Dec 2009

Question 1: Describe the following:
(i) DNS
(ii) Name Resolution
(iii) Subnet Masking
(iv) Urgent Pointer (20 Marks)

Question 2: How does the TCP handle the issue of multiplexing? (10 Marks)

Question 3: (i) Identify the address classes of the following IP address:
(a) 255.255.190.0
(b) 216.111.52.12
(c) 150.156.10.10 (6 Marks)

(ii) Suppose the class B network uses 20 out of 32 bits to define a network address. How many Class B Network are possible in this case? (9 Marks)

(iii) The size of the option field of an IP diagram is 20 bytes. What is the value of HLEN field in binary? (10 Marks)

Question 4: How does TCP handle the flow control problem? Explain it with the help of a diagram showing the status of sliding window at the different stages. (25 Marks)

Question 5: Describe the activities to be performed at every layer in the TCP model when information flows from layer to another layer. (20 Marks)