What does AMPS stand for?
A
Advanced Mobile Phone System
B
Analog Mobile Processing System
C
Automatic Multiplexing Phone System
D
Access Mode Phone Service
Analysis & Theory
AMPS stands for Advanced Mobile Phone System, the first analog mobile system.
Which generation of mobile technology does AMPS belong to?
Analysis & Theory
AMPS is a 1G analog mobile communication technology introduced in the 1980s.
Which access technique is used in AMPS?
Analysis & Theory
AMPS uses Frequency Division Multiple Access (FDMA) to allocate separate frequencies for each call.
What is the main access method used in GSM?
Analysis & Theory
GSM uses a combination of Time Division Multiple Access (TDMA) and FDMA.
Which of the following is a feature of GSM?
C
Digital encrypted communication
D
No support for text messaging
Analysis & Theory
GSM provides digital encrypted communication and supports features like SMS and international roaming.
What is the unique feature of CDMA technology?
A
Only one user per channel
C
All users share the same frequency using codes
Analysis & Theory
In CDMA, all users transmit on the same frequency simultaneously using unique spreading codes.
Which mobile technology offers soft handoff?
Analysis & Theory
CDMA supports soft handoff, allowing smooth transition between base stations.
What is the key limitation of AMPS?
B
Secure voice communication
C
Low spectrum efficiency and analog nature
Analysis & Theory
AMPS has poor spectral efficiency, low security, and supports only analog voice.
Which of the following is true about GSM?
A
It does not support SMS
B
It uses analog voice transmission
C
It enables global roaming and SIM-based access
D
It is used only in the USA
Analysis & Theory
GSM supports international roaming and uses SIM cards for user identity.
Which of the following offers the best voice quality and user capacity among the three?
Analysis & Theory
CDMA provides better voice quality and higher capacity compared to GSM and AMPS.