D:-1.14 KQ
Correct Answer:- Option-B
Question38:-A program counter register in a micro controller is used to
A:-index stack memory
B:-index FIFO for accessing a data
C:-point to the next instruction that execute in a code sequence
D:-none of them
Correct Answer:- Option-C

Question39:-In , a physical contact is required to be established with the actuator of it, to make/break a
connection.

A:-proximity switch
imit switch
C:-relay switch
D:-all the above
Correct Answer:- Option-B
Question40:-(i) | CDMA uses spread spectrum technology

( | GSM stands for Global System for Mobile communications
(iii) GSM uses TDMA

A:-(i) and (ii) are correct
) and (iii) are correct
ii) and (iii) are correct
D:-(i), (ii) and (iii) are correct
Correct Answer:- Option-D
Question41:-How many number of duplex mode links are possible in a mesh topology?
‏2ھ‎
‎8:-`೧(೧-1)7
‎{n(n-1)}/2°
‎0:62
‎Correct Answer:- Option-C
Question42:-Data is being carried in a signal in which one data element is encoded as one signal element (r= 1). If the bit
rate is 50 kbps, calculate the average value of baud rate assuming case factor c = 1/2.
A:-25 kbaud
-50 kbaud
C:-100 kbaud
D:-none of these
Correct Answer:- Option-A
Question43:-Why is a trailer often added to the end of a frame in the data link layer?
A:-Flow control
-Error control

C:-Addressing
D:-Access control
Correct Answer:- Option-B
Question44:-How many bytes are used in an Ethernet physical address?
൧:-6

Correct Answer:- Option-A

Question45:-Elimination-Yield Non-Preemptive Multiple Access mechanism (EY-NPMA) is associated with which of the
following technologies?

A:-LAN
B:-HIPERLAN
C:-ATM
D:-TOKEN RING
Correct Answer:- Option-B
Question46:-Which modulation mechanism is used in bluetooth technology to transform bits to a signal?
A:-ASK
B:-PSK
C:-QPSK
D:-GFSK