Test Papers / Previous Question Papers of IGNOU CS69 TCP/IP Programming December 2005

BACHELOR IN COMPUTER APPLICATIONS
Term-End Examination

December, 2005

CS69 : TCP/IP PROGRAMMING

Time: 3 hours
Maximum Marks: 75

1. (a) Write any two differences between OSI and TCP/IP protocol suit. Also give reasons why OSI is not popular. (3)

(b) Why is layering of the protocols done in TCP/IP stack ? (3)

(c) Explain any two functions of each layer of TCP/IP protocol stack. (4)

(d) Following IP addresses have special meaning. Explain them. (6)

(i) 
 
000000000000000000000000000
(ii) 
 
Network
1 1 1 1 . . . 1 1 1 1 1 1
(iii) 
 
127 (decimal)
Any Value

(e) How many address bits does the latest version of IP (IPv6) have ? What is the maximum number of IP addresses possible with IPv6 ? (3)

(f) Identify the header of each flag and explain its meaning : (8)
(i) URG
(ii) ACK
(iii) FIN
(iv) RST

(g) How is flow control managed by Sliding Window protocol ? (3)

(2) (a) What is Ethernet ? How does it work ? Also explain the fields of Ethernet Frame Format. (9)

(b) What is First-Octet Rule ? Give an example to explain it. (6)

3. (a) What is the significance of hierarchical naming scheme ? Differentiate among following addresses and their meaning with reference of DNS : (9)
(i) www.ignou.edu
(ii) www.ignou.ac.in
(iii) www.ignou.ernet.in
(iv) www.ignou.nic.in

(b) How is the domain name mapped with IP address ? Use diagram to explain the process. (6)

4. (a) How many bits are used to represent the netid and hostid part of an IP address in Class A, B and C networks ? (6)

(b) What is multicast address and why is it used ? (3)

(c) Explain IP Routing and how it takes place. (6)

5. Explain any three of the following with the help of a suitable diagram/example : (5x3)
(i) 3-way handshaking for connection establishment
(ii) Flow control at transport layer
(iii) IP Subnetting
(iv) UDP Header Format