Mobile computing mcq

BCA 

Mobile Computing MCQ

1)   The modulation technique used for 

mobile communication systems during world war II was

a. Amplitude modulation
b. Frequency modulation
c. ASK
d. FSK

ANSWER: Frequency modulation

2)   ———– introduced Frequency Modulation for mobile communication systems in 1935.

a. Edwin Armstrong
b. Albert Einstein
c. Galileo Galilei
d. David Bohm

ANSWER: Edwin Armstrong

3)   The early FM push-to-talk telephone systems were used in

a. Simplex mode
b. Half duplex mode
c. Full duplex mode
d. None of the above

ANSWER: Half duplex mode

4)   DECT stands for

a. Digital European Cellular Telex
b. Digitized Emergency Cellular Telephone
c. Digital European Cordless Telephone
d. Digital European Cellular Telephone

ANSWER: Digital European Cordless Telephone

5)   World’s first cellular system was developed by

a. Nippon Telephone and Telegraph (NTT)
b. Bellcore and Motorola
c. AT&T Bell Laboratories
d. Qualcomm

ANSWER: Nippon Telephone and Telegraph (NTT)

6)   Paging systems were based on

a. Simplex systems
b. Half duplex systems
c. Full duplex systems
d. None of the above

ANSWER: Simplex systems

7)   Paging systems could be used to

a. Send numeric messages
b. Send alphanumeric messages
c. Voice message
d. All of the above

ANSWER: All of the above

8)   Garage door opener is a

a. Transmitter
b. Receiver
c. Transceiver
d. None of the above

ANSWER: Transmitter

9)   Carrier frequency of a TV remote control is in the range

a. of Infra red
b. < 100 MHz
c. < 1 GHz
d. < 2 GHz

ANSWER: of Infra red

10)   Half duplex system for communication has

a. Communication in single direction
b. Communication in single direction at a time
c. Communication in both directions at the same time
d. None of the above

ANSWER: Communication in single direction at a time

11)   MIN stands for

a. Mobile Identification Number
b. Mobile Internet
c. Mobility In Network
d. None of the above

ANSWER: Mobile Identification Number

12)   The process of transferring a mobile station from one base station to another is

a. MSC
b. Roamer
c. Hand off
d. Forward channel

ANSWER: Hand off

13)   PCN is

a. Wireless concept of making calls
b. For receiving calls
c. Irrespective of the location of the user
d. All of the above

ANSWER: All of the above

14)   IMT-2000 is a digital mobile system that functions as

a. Pager
b. Cordless
c. Low earth orbit satellites
d. All of the above

ANSWER: All of the above

15)   The 2G cellular network uses

a. TDMA/FDD
b. CDMA/FDD
c. Digital modulation formats
d. All of the above

ANSWER: All of the above

16)   NADC is a 2G standard for

a. TDMA
b. CDMA
c. Both a & b
d. None of the above

ANSWER: TDMA

17)   2G CDMA standard – cdma one supports up to

a. 8 users
b. 64 users
c. 32 users
d. 116 users

ANSWER: 64 users

18)   2G standards support

a. Limited internet browsing
b. Short Messaging Service
c. Both a & b
d. None of the above

ANSWER: Both a & b

19)   The 2G GSM technology uses a carrier separation of

a. 1.25 MHz
b. 200 KHz
c. 30 KHz
d. 300 KHz

ANSWER: 200 KHz

20)   3G W-CDMA is also known as

a. UMTS
b. DECT
c. DCS-1800
d. ETACS

ANSWER: UMTS