Advanced Networking Technologies - Dec 2015

Electronics Engineering (Semester 8)

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.

Answer the following briefly (any four).

1 (a) Compare OSI model with TCP/IP model.(5 marks) 1 (b) Differentiate between CSMA/CD and CSMA/CA.. Why CSMA/CD can not be implemented in Wireless LAN?(5 marks) 1 (c) Explain SONET functional layer with a neat diagram.(5 marks) 1 (d) Explain subnetting and supernetting with an example.(5 marks) 1 (e) Describe remote monitoring. Bring out its benefits.(5 marks) 2 (a) Explain Ipv4 datagram format in detail. Compare it with IPv6.(10 marks) 2 (b) With a neat diagram, explain the frame format of Frame Relay. Explain how Congestion control and Quality of Service is implemented in it.(10 marks) 3 (a) Explain:
(i) OAM & P
ii) Functions of Routers, Bridge and switches in networking.(10 marks) 3 (b) Mention the need for network security. Explain different security threats and safeguards.(10 marks) 4 (a) Explain fragmentation with respect to IPv4 and Illustrate it with an example.(10 marks) 4 (b) Explain the hardware components of SONET architecture. Draw the frame format of STS-1.(10 marks) 5 (a) With a neat diagram, explain ATM Cell format. Explain ATM Protocol architecture, bringing out the functions of ATM layer and AAL layer.(10 marks) 5 (b) Explain DWDM technology in detail, with a neat schematic diagram of DWDM architecture, bring out the advantages of Optical networking.(10 marks) 6 (a) Explain 'Hidden station problem' in Wireless LAN? How is it tackled? With respect to IEEE 802.11 Protocol, explain the following DCF, PCF, NAV vector.(10 marks) 6 (b) Explain: (i) DMZ (ii) Layer 7 filtering(10 marks) 7 (a) Compare Ubiquitous and hierarchical access in Access Network design. Explain the steps for completing access layer design in detail.(10 marks) 7 (b) What is firewall? What are the capabilities and limitations of firewall? Discuss the different types of firewalls, along with their advantages and disadvantages.(10 marks)