NOKIARNP试题库(Q&A).doc

Questions and Answer
What is the frequency space between two adjacent carrier
200kHz.
What is the frequency space between uplink and downlink of same band
45MHz
How many channels in GSM1800
374
Which of the following are Dedicated Channels? b
FCCH, SCH, AGCH
H, TCH, H
RACH, H, TCH
BCCH, H, H
Which is not part of work? c
Radio work
work
Base Station Subsystem
Network Management System
Short message service is transmitted in c
H
H
Both of them
Neither of them
Channel coding d
is used for encrypting user data
to eliminate the problem of fading dips
is the voice coding mechanism used in the transcoder
is for error detecting and correcting purposes
Which of the following algorithms are Global, ., they have to be the same in all cases? b
A5
A3 and A8
All three have to be global
None of the three have to be Global, they are operator dependent.
In a work, it is implemented by dividing the work into whichthree separate subsystems:
Network Switching Subsystem (NSS)
Base Station Subsystem (BSS)
Network Management Subsystem (NMS)
The work needed for establishing calls posed of which two subsystems
Network Switching Subsystem (NSS)
Base Station Subsystem (BSS)
Why do you think there should be work operators in each country? b
To help more people make money by works
To help rapid expansion of GSM
To get more GSM subscribers
To help allocate t