Which modulation technique is used by GSM?
 a) GMSK
b) BPSK
c) QPSK
d) GFSK

1 Answer

Answer :

a) GMSK

Related questions

Description : IS-136 uses which modulation technique? a) π/4 DQPSK b) BPSK c) GMSK d) AFSK

Last Answer : a) π/4 DQPSK

Description : IS-95 uses which modulation technique? a) GMSK b) BPSK c) QAM d) AFSK

Last Answer : b) BPSK

Description : Which modulation scheme is used by Bluetooth? a) DQPSK b) MSK c) GFSK d) BPSK

Last Answer : c) GFSK

Description : Which of the following is the world’s first cellular system to specify digital modulation and network level architecture? a) GSM b) AMPS c) CDMA d) IS-54

Last Answer : a) GSM

Description : QPSK system is superior to BPSK system because  (a) its bandwidth is higher than that of BPSK System (b) interchannel interference in QPSK system is less then that in BPSK system (c) bandwidth ... is half of the bandwidth of BPSK system (d) in QPSK system inter-symbol interference is improved

Last Answer : QPSK system is superior to BPSK system because bandwidth of QPSK system is half of the bandwidth of BPSK system 

Description : Inan HFC network, the upstream data are modulated using the _______ modulation technique. A) QAM B) QPSK C) PCM D) ASK

Last Answer : QPSK

Description : The 2G GSM technology uses a carrier separation of _____________ a) 1.25 MHz b) 200 KHz c) 30 KHz d) 300 KHz

Last Answer : b) 200 KHz

Description : Which one of the following 2G standard is used in Japan? a) IS-136 b) GSM c) PDC d) AMPS

Last Answer : c) PDC

Description : GSM (Global System for Mobile) was earlier also known as _____________ a) Group System Mobile b) Global Special Meaning c) Group Special Mobile d) Global Special Mobile

Last Answer : c) Group Special Mobile

Description : How many users or voice channels are supported for each 200 KHz channel in GSM? a) Eight b) Three c) Sixty four d) Twelve

Last Answer : a) Eight

Description : Which one is not a TDMA standard of second generation networks? a) GSM b) IS-136 c) AMPS d) PDC

Last Answer : c) AMPS

Description : How much increase in spectral efficiency is provided by W-CDMA in comparison to GSM? a) Two times b) Three times c) No increase d) Six times

Last Answer : d) Six times

Description : UMTS does not has backward compatibility with ____________ a) GSM b) IS-136 c) IS-95 d) GPRS

Last Answer : c) IS-95

Description : Which of the following leads to the 3G evolution of GSM, IS-136 and PDC systems? a) W-CDMA b) GPRS c) EDGE d) HSCSD

Last Answer : a) W-CDMA

Description : What is the term used by ITU for a set of global standards of 3G systems? a) IMT 2000 b) GSM c) CDMA d) EDGE

Last Answer : a) IMT 2000

Description : Group of superframes in GSM is called multiframe. a) True b) False

Last Answer : b) False

Description : Which of the following is not a control channel of GSM? a) BCH b) CCCH c) DCCH d) TCH

Last Answer : d) TCH

Description : __________ supports the operation and maintenance of GSM. a) BSS b) NSS c) OSS d) MSC

Last Answer : c) OSS

Description : ___________ manages the switching function in GSM. a) BSS b) NSS c) OSS d) MSC

Last Answer : c) OSS

Description : Which of the following does not come under subsystem of GSM architecture? a) BSS b) NSS c) OSS d) Channel

Last Answer : d) Channel

Description : Which of the following feature makes impossible to eavesdrop on GSM radio transmission? a) SIM b) On the air privacy c) SMS d) Packet switched traffic

Last Answer : b) On the air privacy

Description : Which of the following memory device stores information such as subscriber’s identification number in GSM? a) Register b) Flip flop c) SIM d) SMS

Last Answer : c) SIM

Description : Which of the following does not come under the teleservices of GSM? a) Standard mobile telephony b) Mobile originated traffic c) Base originated traffic d) Packet switched traffic

Last Answer : d) Packet switched traffic

Description : Who sets the standards of GSM? a) ITU b) AT & T c) ETSI d) USDC

Last Answer : c) ETSI

Description : Previously in 1980s, GSM stands for ____________ a) Global system for mobile b) Groupe special mobile c) Global special mobile d) Groupe system mobile

Last Answer : b) Groupe special mobile

Description : Which is one of the disadvantages of 2G standards? a) Short Messaging Service (SMS) b) Digital modulation c) Limited capacity d) Limited Internet Browsing

Last Answer : d) Limited Internet Browsing

Description : The modulation technique used by GSM cellular system A. Phase shift keying B. Frequency shift keying C. Gaussian minimum shift keying D. QAM

Last Answer : C. Gaussian minimum shift keying

Description : UMTS use which multiple access technique? a) CDMA b) TDMA c) FDMA d) SDMA

Last Answer : a) CDMA

Description : Which of the following spread spectrum techniques were used in the original IEEE 802.11 standard? a) FHSS and DSSS b) THSS and FHSS c) THSS and DSSS d) Hybrid technique

Last Answer : a) FHSS and DSSS

Description : _____ is used for transmission of packets in the cellular switched architecture. a) Packet switching techniques b) Circuit switching techniques c) Packet and circuit switched technique d) Datagram technique

Last Answer : a) Packet switching techniques

Description : What modulation is normally used with digital data? A. AM B. FM C. SSB D. QPSK

Last Answer : D. QPSK

Description : What type of modulation is used on voice and video signals? A. AM B. FM C. SSB D. QPSK

Last Answer : B. FM

Description : Which of the following is not backward compatible with Cdma2000? a) Cdma2000 1xRTT b) Cdma2000 3xRTT c) Cdma2000 1xEV-DO d) Cdma2000 1xEV-DT

Last Answer : c) Cdma2000 1xEV-DO

Description : What are the two options provided by Cdma2000 1xEV? a) Cdma2000 1xRTT. Cdma2000 3xRTT b) Cdma2000 1xEV-DO, Cdma2000 1xEV-DV c) Cdma2000 1xEV-DT, Cdma2000 1xEV-DO d) Cdma2000 1xRTT, Cdma2000 1xEV-DV

Last Answer : b) Cdma2000 1xEV-DO, Cdma2000 1xEV-DV

Description : How is bandwidth increased in Cdma2000? a) Clubbing adjacent radio channels b) Changing the hardware of base stations c) Change of spectrum d) Change of RF equipment

Last Answer : a) Clubbing adjacent radio channels

Description : Cdma2000 1xEV was developed by ________ a) Motorola b) AT&T Laboratories c) Qualcomm d) NTT

Last Answer : c) Qualcomm

Description : Which of the following is not a characteristic of Cdma2000? a) Adaptable baseband signalling rates b) Adaptable baseband chipping rates c) Multicarrier technologies d) OFDMA

Last Answer : d) OFDMA

Description : Cdma2000 works in TDD mode only. a) True b) False

Last Answer : b) False

Description : How many users are supported by Cdma2000 1X in comparison to 2G CDMA standard? a) Half b) Twice c) Six times d) Ten times

Last Answer : b) Twice

Description : Within ITU IMT-2000 body, Cdma2000 1xRTT is also known as ____________ a) Cdma2000 1xEV-DO b) Cdma2000 1xEV-DV c) IS-95B d) G3G-MC-CDMA-1X

Last Answer : d) G3G-MC-CDMA-1X

Description : Which of the following the first 3G CDMA air interface? a) IS-95 b) IS-95B c) Cdma2000 1xRTT d) CdmaOne

Last Answer : c) Cdma2000 1xRTT

Description : 2G and 2.5G CDMA operators may selectively introduce 3G capabilities at each cell without changing entire base stations and reallocate spectrums. a) True b) False

Last Answer : a) True

Description : Which of the following has no backward compatibility with 3G Cdma2000? a) IS-95 b) GPRS c) IS-95A d) IS-95B

Last Answer : b) GPRS

Description : 2G CDMA standard, IS-95, was proposed by which company? a) Nippon Telephone and Telegraph (NTT) b) Qualcomm c) Bellcore and Motorola d) AT&T Bell Laboratories

Last Answer : b) Qualcomm

Description : How many users are supported in IS-95 for each 1.25 MHz? a) Eight b) Sixty four c) Sixteen d) Twenty five

Last Answer : b) Sixty four

Description : How many voice channels are supported for each 30 KHz radio channel in IS-136? a) Eight b) Thirty c) Three d) Sixteen

Last Answer : c) Three

Description : Popular 2G CDMA standard IS-95 is also known as ______________ a) CdmaOne b) CdmaTwo c) IS-136 d) IS-95B

Last Answer : a) CdmaOne

Description : Which of the following is a CDMA standard of second generation network? a) IS-95 b) IS-136 c) ETACS d) EDGE

Last Answer : a) IS-95

Description : Which of the following multiple access techniques are used by second generation cellular systems? a) FDMA/FDD and TDMA/FDD c c) FDMA/FDD and CDMA/FDD d) FDMA/FDD only

Last Answer : b) TDMA/FDD and CDMA/FDD

Description : Choosing a discrete value that is near but not exactly at the analog signal level leads to a) PCM error b) Quantization error c) PAM error d) Sampling error

Last Answer : b) Quantization error