Pune University BE (Computer Engineering) High Performance Networks Question Papers

B.E. (Computer Engineering) HIGH PERFORMANCE NETWORKS (2008 Pattern) (Sem.-II) (Elective-Ill)

Time :3 Hours]                                                                           [Max. Marks :100

Instructions to the candidates :-

1)             Solve Q. 1 or Q. 2, Q. 3 or Q. 4, Q. 5 or Q. 6 form section I. Q. 7 or Q. 8, Q. 9 or Q. 10, Q. 11 or Q. 12 form section II.

2)            Answers to the TWO sections should be written in SEPARATE answer books.

3)             Pigures to the right indicate full marks.

4)             Neat diagrams must be drawn wherever necessary.

5)            Assume suitable data, if necessary.

SECTION – I

QI) a) Explain Gigabit Ethernet architecture with diagram.                       [8]

b) Explain Gigabit Ethernet physical layer with respect to 1000 Base-X family.      [10]

OR

Q2) a) Explain how flow control provided in Gigabit Ethernet?               [8]

b) Differentiate between 10 Mbps, 100 Mbps and 1000 Mbps network characteristics.      [10]

Q3) a) Explain in brief ISDN related protocols at User-Network interface in the context of OSI Model.                                                                                                     [8]

b) Compare between Frame relay and X.25.                                                           [8]

OR

Q4) a) Explain various Acknowledged LAPD operations with examples. [8] b) Describe various frame relay congestion control techniques in brief. [8]

Q5) a) Explain traffic management functions to maintain QoS of ATM connections.                                                                                                            [10]

b) Draw and explain ATM Cell Format at network-network interface. [6]

OR

Q6) a) Explain the need of ATM Adaptation layer. What are different types

supported in ATM? Explain AAL Type I.                                                     [8]

b) Explain functional architecture of B-ISDN.                                                       [8]

SECTION – II

Q7) a) Compare different DSL technologies.                                                                   [8]

b) What is DSL technology? What are the services provided by the telephone companies using DSL? Distinguish betweena DSL modem and a DSL

access multiplexer.    [10]

OR

Q8) a) Explain architecture of VDSL.                                                                               [8]

b) Explain what is asymmetric DSL? Explain in detail modulation technique

in ADSL.                                                                                                           [10]

Q9) a) What is MPLS? Draw and explain structure of label.                                         [8]

b) Explain MPLS Protocol stack architecture.                                                        [8]

OR

Q10)a) Explain working of MPLS with suitable diagram.                                            [8]

b) Explain working of RSVP.                                                                                     [8]

Q11)a) Explain various IEEE 802.16 Standards related to WiMAX.                          [8]

b) Explain OFDM in WiMax in brief.                                                                      [8]

OR

Q12)a) Differentiate between Fixed WiMax and Wifi networks.                                [8]

b) Explain WiMax MAC layer in brief.                                                                    [8]

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