Computer Communication Networks - May 2012

Electronics Engineering (Semester 7)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1 (a) Explain how fast Ethernet differs from 10 base T.(5 marks) 1 (b) Compare in band signaling and out band signaling.(5 marks) 1 (c) Write a note on flow control in data link layer.(5 marks) 1 (d) Explain TCP / IP utilities.(5 marks) 2 (a) Explain the various transmission media and transmission line impairments.(10 marks) 2 (b) Derive the transmission efficiency of Go back N ARQ. State effect of bit error rate and delay bandwidth product on transmission efficiency.(10 marks) 3 (a) Explain Sonet / SDH in detail.(10 marks) 3 (b) Compare packet switching and circuit switching in detail.(10 marks) 4 (a) Explain Dijkstra's algorithm and bellman ford algorithm in detail.(10 marks) 4 (b) Explain ADSL with respect to channel configurations and modulation techniques(10 marks) 5 (a) Explain stop and wait, Go-back N-ARQ and selective repeat ARQ.(10 marks) 5 (b) Explain in detail HUB, bridges, Repeater, Gateway, Switches.(10 marks) 6 (a) Explain in detail HDLC protocol with all frame types supported by HDLC.(10 marks) 6 (b) Explain Berkeley application programming interface in detail.(10 marks)

write a short notes

7 (a) Telnet and FTP.(5 marks) 7 (b) OSI layered architecture.(5 marks) 7 (c) IEEE 802.3 standards(5 marks) 7 (d) Ipv4 and Ipv6.(5 marks)