PTU MCA 1st Sem Paper 2012 Data Communication and Networks

PTU MCA 1st Semester Paper 2012 Data Communication and Networks Punjab Technical University Exam 2012 1st Sem Data Communication and Networks Test September and March Question Paper Free Download Punjab Technical University Data Communication and Networks Question Papers 2012 PTU MCA 1st Semester Question Paper 2012 for all students Previous Year old Past Papers of PTU MCA 1st Sem Paper 2012 Data Communication and Networks Punjab Technical University September 2012 and March 2012 Exam MCA 1st Semester Sample Model Question Papers Free Download PDF

                                                      Data Communication and Networks

 

1. Write Short notes on
(a) What is the difference between synchronous and asynchronous signals ?
(b) How is interference avoided by using FDM?
(c) How is redundancy related to error detection and correction?
(d) Explain the difference between Telephone and leased line communication channels.
(e) Give examples of where star and ring topologies will be useful?
(f) What is the role of CSMA.CD Protocol?
(g) Why we need network reference models ?
(h) Why we need multiplexing in communication channels ?
(i) Differentiate between pure Aloha and slotted Aloha.
(j) What are important characteristics of STDM ?
(k) How leaky bucket algorithm is different from token bucket algorithm ?
(1) List the major design issues at transport layer level.
(m Why network standardization is too important in today’s world ?
(n) How fourier analysis is important in data communication ?
(o) Differentiate between SIP & UTP Cable media.

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