Code: A-17
Subject: TELECOMMUNICATION SYSTEM & SERVICES
Time: 3 Hours
Max. Marks: 100
NOTE: There are 11 Questions in all.  
  • Question 1 is compulsory and carries 16 marks. Answer to Q. 1. must be written in the space provided for it in the answer book supplied and nowhere else.
  • Answer any THREE Questions each from Part I and Part II. Each of these questions carries 14 marks.
  • Any required data not explicitly given, may be suitably assumed and stated
Q.1
 Choose the correct or best alternative in the following: (2x8)
a.
Equipment that controls the electrical termination of ISDN at the user's premises is called
(A) NT1.           (B) NT2.
(C) NT3.           (D) NT4.
b.
 A device that links two homogeneous packet broadcast local network is
(A) HUB.           (B) Repeater.
(C) Gateway.      (D) Bridge.
c.
 In a telephone network call waiting feature requires two switching paths to be set up simultaneously and both the paths must use
(A) different signalling scheme.
(B) same signalling scheme.
(C) two orthogonal signalling scheme.
(D) two signalling scheme with appropriate phase delay.
d.
 Which one of these can have the highest data transfer speed :
(A) ISDN.                         (B) DSL.
(C) Cable Modem.            (D) VSATs.
e.
 DQDB is an acronym for ________________.
(A) Distributed Queue Database.
(B) Differential Queue Database.
(C) Data Queue Dual Bus.
(D) Distributed Queue Dual Bus.
f.
 In ___________, each packet of a message need not follow the same path from sender to receiver.
(A) Circuit Switching.
(B) Message Switching.
(C) Virtual Approach to Packet Switching.
(D) Datagram Approach to Packet Switching.

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