UGC NET COMPUTER SCIENCE JUNE 2014 SOLVED PAPER 2

UGC NET COMPUTER SCIENCE JUNE 2014 SOLVED PAPER 2

1.      Infrared signals can be used for short range  communication  in  a  closed area using propagation.
(A)   ground            (B)    sky
(C)    line of sight    (D)    space

Ans.: C.) Line of Sight

Question from Mobile Computing

Very easy

2.    A  bridge  has  access  to address in the same network.
(A)   Physical    (B)    Network
(C)    Datalink    (D)   Application

Ans.: A.) Physical Layer

Data Communication and networks

3. The bit rate of a signal is 3000 bps. If each signal unit carries 6 bits, the baud rate of the signal is    .
(A)    500 baud/sec
(B)    1000 baud/sec
(C)    3000 baud/sec
(D)    18000 baud/sec

Ans.: A.) 500 baud/sec.

Very easy

Tip: Baud rate=Bit rate/N

So 3000/6=500