Gujarat University
MCA Semester V
Networking Technologies II
8th January, 1999
Instructions:
1. Answer to the two sections must be written in separate answer books.
2. Figures to the right indicate full marks.
3. Make the assumptions, wherever necessary and state them clearly.
Section I
Q-1 Answer the following (any Six) [9]
1. Why was it felt necessary to have the UCP checksum in addition to the Checksum in the IP header?
2. What is the difference between a Repeater and a Bridge?
3. What is multicasting?
4. How does a router know whether an incoming diagram carries a GGP message?
5. Explain in brief the concept of connectionless unreliable delivery.
6. Explain in brief the primary classes of IP addresses. Will this scheme be sufficient in future or not?
7. What do you meant by a UDP port? List out any five well known UDP port numbers.
8. Differentiate between ARP and RARP.
Q-2 a. Explain the significance of each of the fields of the TCP segment header.
b. What is routing? Explain in detail any one of the following:
i. Vector distance routing ii. Link sate routing
OR
Q-2 a. Explain the following controls with two suitable examples each. [4]
i. checkbox ii. list
b. write a JAVA application program which displays the string “Hello, World” in the middle of a
CANVAS of size 200 X 200. [4]
Q-3 a. Explain the concept of a Network’s maximum Transfer Unit and of fragmentation as applied to IP
datagrams. [2]
b. What is a DNS server? How domain names are mapped to addresses? [3]
c. What is EGP? Why do implementation of EGP use a HOLDDOWN mechanism that causes the protocol to delay accepting an acquisition .” From a neighbor for a fixed time following the receipt of a from that neighbour. [3]
