Rajasthan Technical University 2010 B.Tech Information Technology Computer network(common for cs & it) - Question Paper

6E3015
B-tech. - VI sem. (main/back) Examination, June-2010
CS & IT
Computer networks (common for 6CS2 & 6IT2)
Instruction to candidates:
Attempt overall 5 ques.. Internal option is indicated. All ques. carry equal marks. (Schematic diagrams must be shown wherever necessary. Any data you feel missing May suitably be presumed and said clearly. Units of volumes used/calculated must be said clearly.)
UNIT-1
Q.1. (a) Briefly discuss services and protocols of layers of OSI protocol hierarchy. (8)
(b) discuss major classes of guided media. What is the purpose of cladding in optical fiber? (8)
OR
Q.1. (a) define hardware and software problems in Internetworking. (8)
(b) Write short note on:
1. Internetworking devices.
2. Internet backbone. (8)
UNIT-2
Q.2. (a) discuss e-mail architecture along with its main components. (8)
(b) What is DNS? Why it is required? When a DNS server receives a request, elaborate the possible actions that it can take? (8)
OR
Q.2. (a) define the steps involved when e web browser requests for and finds a web page from a web server. Why HTTP is known as stateless protocol? (8)
(b) Write any for HTTP and FTP commands with syntax and suitable illustration. (8)
UNIT-3
Q.3. (a) discuss 3 multiplexing techniques. Distinguish ranging from multilevel TDM, multiple shot TDM and pulse- stuffed TDM. (8)
(b) Differentiate ranging from ports and sockets in situation of TCP &IP protocols. (8)
OR
Q.3. (a) explain broad level function of TCP. How does three- way handshake for- creating a TCP connection work? (8)
(b) What features make TCP reliable? discuss the frame format and purpose of different fields of TCP packet format. (8)
UNIT-4
Q.4. (a) Briefly define subnetting and supernetting. How do they differ from a default mask in classfull addressing? (8)
(b) Briefly discuss the following:
1. NCP & LCP
2. Link state routing (8)
OR
Q.4. (a) Write a detail note on tunneling strategy and fragmentation. (8)
(b) Compare and contrast the field of jpv4 and jpv6 datagram format. (8)
UNIT-5
Q.5. (a) What is SONET? discuss the function of its different layers with suitable diagrams. (8)
(b) What is virtual tributary? elaborate its different types? (8)
OR
Q.5. (a) discuss physical configuration of SONET devices. What is relationship ranging from SONET and SDH? (8)
(b) What is relationship ranging from STS signals and OC signals?

Earning:   Approval pending.