Engineering BE Computer Engineering Sem 5 May 2024 2024 Computer Network Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 Attempt any four of the following Marks
   • b) What are three reasons for using layered protocols? What is two possible disadvantages of using layered protocols? 5
   • c) Explain the count to infinity problem in detail. 5
   • d) List two ways in which the OSI reference model and the TCP/IP reference model are the same. Now list two ways in which they differ 5
   • e) 4-bit data bits with binary value 1010 is to be encoded using even parity Hamming code. What is the binary value after encoding? 5
2. Q2 Attempt the following
   • a) Define guided transmission media? with diagram the details for coaxial cable? State any 5 comparative characteristics of coaxial cable with fiber optics and twisted pair cables 10
   • b) Explain how collision handled in CSMA/CD? A 5 km long broadcast LAN uses CSMA has 10’ bps bandwidth and uses CSMA/CD. The signal travels along the wire at 5 x 10 m/s. What is the minimum packet size that can be used on this 10
3. Q3 Attempt the following
   • a) An organization has granted a block of addresses starting with 105.8.71.0/24, organization wanted to distribute this block to 11 subnets as follows 10
4. Q1 First Group has 3 medium size businesses, each need 16 addresses
5. Q2 The second Group has 4 medium size businesses, each need 32 marks
6. Q3 The third Group has 4 households, each need 4 addresses. Design the sub blocks and give slash notation for each subblock. Find how many addresses have been left after this allocation
   • b) Explain classful IP addressing scheme in detail? List the advantages and disadvantages of classless IP addressing scheme 10
7. Q4 Attempt the following
   • a) Explain the open loop congestion control and closed loop congestion control policies in detail 10
   • b) Explain the TCP connection establishment and Connection release. Attempt the following 10
   • a) Explain the concept of sliding protocol? Explain the selective repeat protocol with example? Compare the performance of Selective repeat & Go-back-N protocol 10
   • b) Explain the link state routing algorithm with example? 10
8. Q6 Write a short note on following

Read from the scan above, so a character or two may differ. The scan is the original.