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BCS-041 Solved Assignment 2017-18 For IGNOU BCA 4th Semester

Course Code: BCS-041
 Course Title: Fundamentals of Computer Networks
Assignment Number: BCA (4)/041/Assignment/17-18
Last Dates for Submission: 15th October, 2017 (For July 2017 Session)
                                               : 15th April, 2018 (For January 2018 Session)
Questions Solved In Assignment:
Q.1. (a) Differentiate between Go Back-N ARQ with Selective Repeat ARQ. Also, explain the disadvantages of stop-and-wait- ARQ in comparision to Go Back-N ARQ protocol.
(b) Describe the architecture of an ATM network. Also, differentiate between two types of connections: PVC and SVC used in ATM.
Q.2.(a) Differentiate between switch and bridge? What are the advantages of separating an Ethernet LAN using a bridge? Explain.
(b) Write the role of DNS resolver in the DNS system. Also, explain how does a DNS Resolver bootstrap the domain name lookup process?
3. (a) Explain masking used in addressing with the help of a suitable example. Also, difference between boundary level masking and non-boundary level masking.
(b) Classify the routing protocols based on different parameters. Why is adaptive routing superior to non adaptive routing? Explain.
(c) Discuss the various types of encoding and modulation techniques used in Data communication.
Q4. (a) Differentiate between analog and digital transmission. Give examples of each.
(b) List the requirements to connect two different networks (Ethernet and Token ring) in the lower layers?
(c) Explain the limitations of distance vector routing algorithm.
(d) Explain the significance and use of different fields of TCP header and IP header with the help of neat diagrams.



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