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2003 Course Computer Networks

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Total No. of Questions : 12] [Total No. of Pages :3 [3864] - 261 B.E. (E & Tc) COMPUTER NETWORKS (2003 Course) (404214) P1145 Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Answer three questions from section I and three questions from section II. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic tables, slide rule, mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) b) c) Give the detailed comparison of OSI and TCP/IP Reference models for Networks. [8] Explain how and when a Hub, Switch and Routers are used to expand a network. [4] Explain Client Server Model. [4] OR Q2) a) Explain the TCP/IP model with protocols at each layer [8] b) c) Explain in brief physical address, network address and port number.[4] Differentiate between wired and Wireless network. [4] Q3) a) What is dial up modem technology? Explain in brief V .32 and V .90 modem standards with data rates. [8] What is the maximum data rate for a telephone line with BW 3.1 kHz and 30db SNR? [4] Give the brief description of the application and limitations of the twisted pair cable, coaxial cable, fiber optic cable and microwaves. [4] b) c) OR P.T.O.

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