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2003 Course High Performance Networks

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Total No. of Questions : 12] P1171 [Total No. of Pages : 3 [3664]-348 B.E. (Computer) HIGH PERFORMANCE NETWORKS (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer any three questions from each section. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. SECTION - I Q1) a) Discuss in short about 1000 BASE - X Family with suitable applications. [8] b) Explain why half duplex operation of Gigabit Ethernet incorporates Carrier Extension. What are its drawbacks. [8] OR Q2) a) What is medium independent interfacing? Differentiate among all 3 interfaces used in 10,100 and 1000 mbps Ethernet (At least 4 points).[8] b) Explain in short the need of flow control in gigabit Ethernet? How it is [8] supported? Q3) a) Draw the LAPF Protocol Frame Format. What is the significance of DLCI? [6] b) Explain the need and significance of TE1, NT2 and TA functional groups specify suitable example which represents TE1 and TE2. [8] c) Explain the terms FECN and BECN. What is their significance in a frame relay network. [4] OR Q4) a) A company has H.O in Pune and two branch offices in Mumbai and Bangalore. Draw a logical diagram of full mesh frame relay network with suitable IP addresses, which would facilitate the communication among these sites. [4] P.T.O. b) What is common channel signaling? Explain in short the SS7 protocol? [6] c) Describe the importance of CIR, Bc and Be In Frame relay Congestion Control. [8] Q5) a) What is Virtual Path and Virtual Channel? Explain the advantages of Virtual Path in ATM Network. [8] b) Draw and Explain B-ISDN protocol architecture. Which layers are related to ATM. [8] OR Q6) a) Which AAL will you choose for supporting the following applications? [6] i) Uncompressed Video. ii) Compressed Video. iii) File Transfer. b) What is cell rate decoupling? How it is provided? [6] c) Draw the ATM Cell Structure at User-Network Interface. Explain the Function of CLP Field. [4] SECTION - II Q7) a) Explain why are some variations of xDSL Asymmetric. [8] b) Explain the operation of ADSL using DMT (Discrete Multitone). [8] OR Q8) a) Draw and explain A typical ADSL equipment configuration. [8] b) Describe in short VDSL2. What are its advantages over VDSL standard. [8] Q9) a) Describe in short the significance of following terms : i) ii) [8] Differentiated Services. Integrated Services. b) Describe in short the working of RSVP protocol. What are its key features. [8] OR Q10) a) Draw and explain the structure of label used in MPLS. b) Differentiate between ATM and MPLS. [3664]-348 2 [4] [4] c) Describe the following terms related to MPLS operation i) ii) iii) iv) [8] Label Edge Router (LER). Label Switch Router (LSR). Label Distribution Protocol (LDP). Label Switched Path (LSP). Q11) a) Explain the various security measures that can be applied to secure A WiFi network. [6] b) Differentiate between 802.11a and 802.11g standards. [6] c) Describe in short the various parameters that can be configured during Access Point installation. [6] OR Q12) a) Discuss in short about 802.16 physical layer. b) Comment on MAC layer operations of WiMAX. [6] [6] c) Differentiate between WiFi and WiMax technology highlighting key points. [6] xxxx [3664]-348 3

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